Updated on 2024/11/08

写真a

 
INOUE Ryouta
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Assistant Professor
Position
Assistant Professor
External link

Degree

  • 博士（工学） ( 2020.3   Tohoku University )

Research Interests

  • 交流損失

  • 高温超電導コイル

  • 非接触給電

  • 変圧器

  • 超電導応用

  • 撚り線導体

Education

  • Tohoku University   大学院工学研究科   電気エネルギーシステム専攻 博士課程後期課程

    2017.4 - 2020.3

    　 More details

  • Tohoku University   大学院工学研究科   電気エネルギーシステム専攻 博士課程前期課程

    2015.4 - 2017.3

    　 More details

  • Nara National College of Technology   専攻科電子情報工学専攻  

    2013.4 - 2015.3

    　 More details

  • Nara National College of Technology   電気工学科  

    2008.4 - 2013.3

    　 More details

Research History

  • Okayama University   学術研究院 環境生命自然科学学域   Assistant Professor

    2023.4

    　 More details

  • Okayama University   学術研究院 自然科学学域   Assistant Professor

    2021.4 - 2023.3

    　 More details

  • Okayama University   The Graduate School of Natural Science and Technology   Assistant Professor

    2020.4 - 2021.3

    　 More details

  • Japan Society for the Promotion of Science

    2017.4 - 2020.3

    　 More details

Professional Memberships

  • 一般社団法人 電気学会

    　 More details

  • 公益社団法人 低温工学・超電導学会

    　 More details

Committee Memberships

  • 一般社団法人 電気学会   Ｂ部門研究調査運営委員会  

    2024.4   

    　 More details

  • 公益社団法人 低温工学・超電導学会   発表賞推薦委員会委員  

    2023.4   

    　 More details

 

Papers

  • Experiment and Simulation on Mechanical Behavior in 1/2-Scale Demonstration REBCO Coil System of Skeleton Cyclotron for Cancer Therapy Reviewed

    Hiroshi Ueda, Ryota Komae, Aoi Yamashita, Ryota Inoue, SeokBeom Kim, So Noguchi, Tomonori Watanabe, Mitsuhiro Fukuda, Gen Nishijima, Rui Kumagai, Atsushi Ishiyama

    IEEE Transactions on Applied Superconductivity   34 ( 5 )   1 - 5   2024.8

    　More details

    Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2023.3338151

    researchmap

  • Experimental and Analytical Study on Contact Resistance and Current Distribution of NI HTS Coils in Low-Frequency AC Method Reviewed

    SeokBeom Kim, Daiki Sato, Ryota Inoue, Hiroshi Ueda, Mato Takanobu, So Noguchi

    IEEE Transactions on Applied Superconductivity   34 ( 5 )   1 - 5   2024.8

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2024.3358773

    researchmap

  • Turn-to-Turn Contact Resistance Measurement of NI REBCO Double Pancake Coils Reviewed

    Takanobu Mato, Ryota Inoue, Hiroshi Ueda, SeokBeom Kim, So Noguchi

    IEEE Transactions on Applied Superconductivity   34 ( 3 )   1 - 5   2024.5

    　More details

    Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2024.3361874

    researchmap

  • Basic Experimental Study on a 1 kW-Class WPT System Using HTS and Copper Coils for EVs Reviewed

    Ryota Inoue, Takahiro Iwamoto, Haruki Komoda, Hiroshi Ueda, SeokBeom Kim

    IEEE Transactions on Applied Superconductivity   34 ( 3 )   1 - 5   2024

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2024.3354669

    researchmap

  • Optimal Design Of Resonance Circuit Topology for a Wireless Power Transmission System Using HTS Coils Reviewed

    Ryota Inoue, Takahiro Iwamoto, Haruki Komoda, Hiroshi Ueda, SeokBeom Kim

    IEEE Transactions on Applied Superconductivity   34 ( 5 )   1 - 5   2024

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2024.3378212

    researchmap

  • Investigation of HTS Coil Structure Robustness Against Misalignment Between Coils in a Wireless Power Transmission System for Railway Vehicles Reviewed

    Ryota Inoue, Yuta Inoue, Hiroshi Ueda, SeokBeom Kim

    IEEE Transactions on Applied Superconductivity   33 ( 5 )   1 - 5   2023.8

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2023.3252490

    researchmap

  • Contact Resistance and Current Characteristics of NI HTS Coils in Low Frequency AC Method Reviewed

    SeokBeom Kim, Hirotaka Kobayashi, Daiki Sato, Ryota Inoue, Hiroshi Ueda, Takanobu Mato, So Noguchi

    IEEE Transactions on Applied Superconductivity   33 ( 5 )   1 - 5   2023.8

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2023.3248519

    researchmap

  • Basic Study of a Wireless Power Transmission System Using Superconducting Coil as a Ground-Side Coil for Electric Vehicles Reviewed

    Yuta Inoue, Ryota Inoue, Hiroshi Ueda, SeokBeom Kim

    IEEE Transactions on Applied Superconductivity   33 ( 5 )   1 - 5   2023.8

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2023.3247685

    researchmap

  • Basic Coil Structure for Rapid Charge in a Low-Frequency and High-Efficiency Wireless Power Transmission System Using High-Temperature Superconducting Coil for Railway Vehicle Reviewed

    Ryota Inoue, Yoh Nagasaki, Makoto Tsuda, Daisuke Miyagi

    IEEE Transactions on Applied Superconductivity   33 ( 1 )   1 - 9   2023.1

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    We have been investigating the possibility of a low-frequency and high-efficiency wireless power transmission (WPT) system for the railway vehicle using a high-temperature superconducting (HTS) coil. We investigated a basic HTS coil structure having a low ac loss and a high coupling coefficient between the primary and secondary coils by adjusting a radial gap between turns. The devised HTS coil was configured to have a radial gap approximately equal to the HTS tape width and increase the number of turns while reducing the inner diameter of the coil. Also, we analyzed the power transmission characteristics in the 40 kW class WPT system using the devised HTS coils operated at a low frequency around 1 kHz for the railway vehicle. Furthermore, we fabricated the 1 kW class WPT model system at an operating frequency of 0.92 kHz using the devised HTS coil and demonstrated the effectiveness of the low-frequency and high-efficiency WPT system using the devised HTS coil structure. As a result, we clarified that the low-frequency WPT system using the devised HTS coil for the railway vehicle can perform more rapid charging and the high-efficiency transmission than that using the copper coils.

    DOI： 10.1109/tasc.2022.3220342

    Scopus

    researchmap

  • Investigation into accuracy of turn-to-turn contact resistance measurement in low-frequency AC method by 3D numerical simulation Reviewed

    Takanobu Mato, Ryota Inoue, Hiroshi Ueda, Seok Beom Kim, So Noguchi

    Superconductor Science and Technology   36 ( 1 )   2023.1

    　More details

    Publishing type：Research paper (scientific journal)  

    In this paper, we discuss two points: (a) the accuracy of contact resistance measurement using the low-frequency AC (LFAC) method and (b) the relation between the contact resistance and the contact resistivity. The LFAC method is used to measure the turn-to-turn contact resistance of a no-insulation (NI) rare-earth barium copper oxide (REBCO) pancake coil. We have previously shown the validity of the LFAC method by experiment. In this paper, the current distribution of aNI REBCO pancake coil on the applyication of the LFAC method is investigated using numerical simulation. The simulation results show the possibility of improving the measurement accuracy. Hence, a correction method is also proposed using the phase difference of the coil voltage and current. The LFAC simulation results also indicate the inconsistency of the well-known relation between contact resistance and contact resistivity. Therefore, we investigated the relation through the LFAC and sudden-discharging test simulations.

    DOI： 10.1088/1361-6668/aca5b9

    Scopus

    researchmap

  • Experimental Study on the Critical Current Properties of Flexible Nb3Al Superconducting Wires in Cryocooler System Reviewed

    Hibiki Fukuda, Riku Onoue, Tomoya Sakamoto, Ryota Inoue, Hiroshi Ueda, SeokBeom Kim, Akihiro Kikuchi, Yasuo Iijima

    IEEE Transactions on Applied Superconductivity   33 ( 5 )   1 - 5   2023

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2023.3258911

    researchmap

  • Analyses of deformation due to screening-current-induced force in layer-wound REBCO insert coil for 1.3-GHz LTS/HTS NMR Reviewed

    Keisuke Naito, Ryo Harada, Ryota Inoue, SeokBeom Kim, Hiroshi Ueda, Yu Suetomi, Yoshinori Yanagisawa, Hideaki Maeda

    IEEE Transactions on Applied Superconductivity   33 ( 5 )   1 - 5   2023

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2023.3259923

    researchmap

  • Critical Characteristics of Ultrafine Nb3Al Superconducting Wires Under Conduction Cooling Conditions Reviewed

    SeokBeom Kim, Hibiki Fukuda, Ryo Kimura, Ryota Inoue, Hiroshi Ueda, Akihiro Kikuchi, Yasuo Iijima

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 5   2022.9

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    In recent years, an ultrafine Nb3Al wires with a diameter of less than 50 mu m has been developed by a research group at the National Institute for Materials Science (NIMS) in Japan. Therefore, we are planning to use the developed high performance Nb3Al wires for superconducting applications operated by cryocooler. In order to design the superconducting applications cooled by cryocooler, it is necessary to measure the temperature and magnetic field dependence of the critical current of Nb3Al wires under conduction cooling conditions. Single and seven-stranded Nb3Al wires with different diameters (phi 67 mu m and phi 81 mu m) fabricated by the Jelly-rolled method were prepared. The barrier material of the two samples is the same Nb, but the core materials are Nb (phi 67 mu m) and Ta (phi 81 mu m), respectively. The Cu/nonCu ratio of the two samples is 1. In this study, the critical currents of sample wires were measured by a four-probe method with current sweep and constant current, and they were compared to define a reasonable critical current value under conduction cooling. Under conduction cooling, it was confirmed that the critical current measurement by the constant current method was more accurate than the current sweep method.

    DOI： 10.1109/tasc.2022.3156927

    Web of Science

    researchmap

  • Numerical Evaluation on Quench Behavior of No-Insulation REBCO Coil System in Small-Scale Model of Skeleton Cyclotron Reviewed

    Yuki Nakai, Yuta Miyake, Ryota Inoue, SeokBeom Kim, Hiroshi Ueda, So Noguchi, Tomonori Watanabe, Shigeo Nagaya, Mitsuhiro Fukuda, Atsushi Ishiyama

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 5   2022.9

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    We have proposed a cyclotron for cancer therapy, called Skeleton Cyclotron, which is based on non-insulation (NI) high temperature superconducting (HTS) technology. The Skeleton Cyclotron consists of circular main coils for the isochronous field and non-circular sector coils for the azimuthally varying field (AVF). In order to establish the development technology of HTS multi-coil system for the skeleton cyclotron, we have now designed a small half-size multi-coil system for demonstration, called Ultra-Baby Cyclotron, at the operating current of 540 A, the operating temperature of 20 K and the magnetic field of 1.6 T at the extraction radius of 0.2 m. The NI HTS coil can make both high current density and high magnetic field, so it can achieve miniaturization of its size and high intensity beams. Furthermore, in NI coils, the current flows not only in the coil winding direction but also in the radial direction. Therefore, even if the local normal transition occurs in the coil windings, the current can bypass into the neighboring wires and thermal stability can be improved. On the other hand, when the normal transition and quench occur, the electromagnetic and mechanical behaviors in NI coils are different from those of conventional insulated coil. Therefore, we developed a current distribution analysis code for non-insulation HTS coils and simulated the current distributions during the normal transition and quench in NI REBCO coil system for Skeleton Cyclotron.

    DOI： 10.1109/tasc.2022.3174811

    Web of Science

    researchmap

  • Deformation Analysis of No-Insulation REBCO Coils Considering Turn-to-Turn Contact Configuration Reviewed

    Hiroshi Ueda, Keisuke Naito, Ryota Inoue, SeokBeom Kim

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 5   2022.9

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    In recent year, there has been remarkable progress in the use of high-field rare-earth barium copper oxide (REBCO) coils in NMR, MRI, and accelerator applications. No-insulation (NI) winding techniques are adopted to achieve high thermal stability and high current density. Thus, each winding in a non-impregnated NI REBCO coil can deform separately and move freely because of the thermal strain and electromagnetic force. The additional force and stress due to a screening current has also become an issue in REBCO coils. The screening current leads to a non-uniform force distribution in REBCO tapes and forces exceeding an acceptable value. It has been reported that REBCO coils have experienced mechanical deterioration or damage when operating under high magnetic fields. However, the detailed mechanism for this damage or deterioration has not been clarified. In order to clarify the detailed mechanism of this damage to a REBCO coil, the stress and strain during the winding, cooling down, charging, and discharging processes need to be evaluated. Furthermore, in NI REBCO coils, the turn-to-turn contact configurations are very important for the current bypassing, the thermal and mechanical stability. In previous studies, we have developed the numerical simulation code on the electromagnetic behavior of screening current and mechanical behavior of the turn-to-turn contact state. This study numerically evaluated the deformation and stress in REBCO tape and the turn-to-turn contact in NI REBCO coils.

    DOI： 10.1109/tasc.2022.3171160

    Web of Science

    researchmap

  • Numerical Evaluation of Reinforcement Structure Against Electromagnetic and Thermal Stresses in Stacked REBCO Pancake Coils Reviewed

    Keisuke Naito, Ryota Inoue, SeokBeom Kim, Hiroshi Ueda

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 5   2022.9

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    In recent years, high field REBCO coils have been applied with great interest to NMR and accelerators due to their high thermal stability and high current density. However, deteriorations and damages of REBCO coils are occurring. During the charge and discharge of REBCO coils, screening currents are induced to circulate in the windings, resulting in a non-uniform current distribution in the wires. It has been reported that the electromagnetic force distribution in the wire becomes significantly non-uniform, resulting in degradation of REBCO coils. In this study, the effects of stress and deformation of REBCO coils were investigated through electromagnetic stress analysis using two-dimensional axisymmetric structural analyses, taking into account thermal stress during cooling, tension during winding and electromagnetic force during not only charge and but also discharge, and the suppression of stress and deformation by the currently devised YOROI-coil (Y-based oxide superconductor and reinforcing outer integrated coil) structure and over-banding was evaluated.

    DOI： 10.1109/tasc.2022.3177389

    Web of Science

    researchmap

  • Numerical Evaluation on Mechanical Behavior of No-Insulation REBCO Pancake Coils in Small-Scale Model of Skeleton Cyclotron Reviewed

    Yuta Miyake, Yuki Nakai, Ryota Inoue, SeokBeom Kim, Hiroshi Ueda, So Noguchi, Tomonori Watanabe, Shigeo Nagaya, Mitsuhiro Fukuda, Atsushi Ishiyama

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 5   2022.9

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    We are developing a high-temperature superconducting (HTS) air-core compact cyclotron, named Skeleton Cyclotron (Ueda et al. 2013), (Ueda et al. 2019), that can accelerate various particles and variable energy for radioisotope (RI) production. The coil system of Skeleton Cyclotron consists of circular main coils and noncircular sector coils which are wound by REBa2Cu3O6+delta (REBCO) tape applied no-insulation (NI) winding technique for both high current densities and thermal stabilities. The electromagnetic and thermal behaviors in NI coil differs from those in conventional insulated coils during charging, discharging, and quenching. Therefore, it is necessary to investigate the mechanical behavior and reinforcement structure of multiple NI coils in Skeleton Cyclotron. In this study, we report on the numerical evaluation of mechanical properties of NI REBCO coils in Skeleton Cyclotron at charging and quenching considering the current distributions and electromagnetic stresses unique to NI coils. In the quenching process, the radial current in a quenching pancake of the sector coil became dominant, resulting in generating the rotating force and non-symmetric deformation. YOROI-coil (Y-based oxide superconductor and reinforcing outer integrated coil) structure is effective for the additional magnetic stress.

    DOI： 10.1109/tasc.2022.3163693

    Web of Science

    researchmap

  • Experimental Study on the Accuracy of the Proposed LFAC Method for Measuring the Contact Resistance of NI HTS Coils Reviewed

    SeokBeom Kim, Kohei Miyamoto, Hirotaka Kobayashi, Ryota Inoue, Hiroshi Ueda, So Noguchi

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 5   2022.9

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    No-insulation (NI) winding technique provides high thermal stability, and the turn-to-turn contact resistance is an important factor to characterize the thermal stability and charging delay of NI HTS magnets. Therefore, a method that can accurately measure the contact resistance between turns of NI HTS magnets was required. We have previously proposed a turn-to-turn contact resistance measurement method using a low frequency AC current. The proposed low-frequency-AC-current (LFAC) can accurately evaluate the contact resistance between turns only when the whole AC current flows in the radial direction of the NI HTS pancake coil (there is almost no coil inductance). In addition, the AC current flowing in the radial direction needs to have a uniform current distribution in the plane of winding wire (REBCO wire). Therefore, in this study, an experimental study was conducted to prove the reliability of the proposed LFAC method. In the experiment, three NI test coils with different winding tension (0.5, 1 and 2 kg) were prepared, and four pickup coils were placed under each test coil to evaluate the radial current bypass characteristics. The contact resistance of each test coil was decreased from a few percent to several tens of percent by multiple cooling cycles from room temperature to liquid nitrogen temperature. Although it is a qualitative observation, the validity of the LFAC method was proved by the prepared pickup coils, and it was shown that even a small change of contact resistance in NI coils can be measured.

    DOI： 10.1109/tasc.2022.3175791

    Web of Science

    researchmap

  • Basic study on power transmission characteristics for high-temperature superconducting cable termination applying a wireless power transmission system Reviewed

    Ryota Inoue, Hiroshi Ueda, Seokbeom Kim

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 1   2022

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    We devised an HTS cable termination applying a wireless power transmission (WPT) system. The WPT system for the HTS cable termination can mechanically separate the HTS cable (low temperature part) from the copper cable (normal temperature part). In order to clarify the feasibility and design guidelines of the WPT system for the HTS cable termination, it is necessary to investigate the power transmission characteristics of the WPT system using the HTS and copper coils. In this study, we analyzed the power transmission characteristics of the simple WPT model system for the HTS cable termination by an equivalent circuit model and a finite element method analysis, and investigated the basic coil structure for the HTS cable termination applying the WPT system. As a result, the high-efficiency WPT system for the HTS cable termination can be realized by increasing the transport current of the HTS coil more than that of the copper coil. Also, we found that the HTS-Cu system using the primary-side HTS coil and the secondary-side copper coil is suitable for the HTS cable termination applying the WPT system.

    DOI： 10.1109/tasc.2022.3167933

    Web of Science

    researchmap

  • Study on the magnetic properties of metal substrates at low temperature by fabricated compact SST Reviewed

    Kazuki Kume, Ryota Inoue, Hiroshi Ueda, Seokbeom Kim

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 1   2022

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    In recent years, a development of a high magnetic field magnet using a high temperature superconducting (HTS) wire has been advanced. On the other hand, we are planning to use the HTS wires for superconducting applications cooled by cryocooler. So, it is necessary to measure the temperature dependence of the magnetic properties of the metal substrates (Hastelloy, stainless steel and NiW) for HTS wire under conduction cooling conditions. We have been developing a single sheet tester (SST) that can evaluate the magnetic properties of electromagnetic steel sheets and other materials. However, since the size of an excitation coil in the conventional SST is large, it is difficult to install them in the conduction cooling system. In this study, we fabricated the compact SST and its measurement accuracy was compared with the conventional SST. The magnetic properties of metal substrates were measured at room temperature and liquid nitrogen temperature (77 K). As a result, although the measurement accuracy of the compact SST was slightly reduced by decreasing the coil size, we found that the error of the magnetic field homogeneity of the compact SST was within 2% at the center region of the 5 mm length. The magnetic properties of Hastelloy and stainless steel were almost unchanged at both room temperature and liquid nitrogen temperature. However, the magnetic properties of the NiW substrate changed significantly at liquid nitrogen temperature. The B-H characteristics of the NiW substrate in the rolling and transverse directions were clearly different, and the iron loss increased significantly at liquid nitrogen temperature.

    DOI： 10.1109/tasc.2022.3159499

    Web of Science

    researchmap

  • Study on Low-Loss and High-Energy Density Coil Structure of a Wireless Power Transmission System Using High Temperature Superconducting Coils for Railway Vehicle Reviewed

    Ryota Inoue, Hiroshi Ueda, Seokbeom Kim

    IEEE Transactions on Applied Superconductivity   32 ( 6 )   1 - 1   2022

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    We have been investigating a wireless power transmission (WPT) system using a high-temperature superconducting (HTS) coil for a railway vehicle. In the previous research, we investigated the conceptual design of the WPT system using the HTS coils for the railway vehicle. However, in order to suppress the AC loss per HTS coil below the cooling power of a cryocooler, it was necessary to install multiple HTS coils in parallel on the vehicle and ground sides. Therefore, we investigated the low-loss and high-energy density coil structure in the WPT system for the railway vehicle. In this study, we analyzed the AC loss and the coupling coefficient of various HTS coil structures using the narrow REBaCuO (RE: Rare Earth elements, REBCO) wires in parallel by finite element method (FEM) calculation, and evaluated the power transmission characteristics of the WPT system using the HTS coil structures using the narrow REBCO wires in parallel for the railway vehicle. As a result, we found that the AC loss of the HTS coil structure using the narrow REBCO wires in parallel was lower than that using the wide REBCO wire. The coupling coefficient between coils using a single pancake coil structure was higher than that using a double pancake coil structure. Also, the receiving power density of the WPT system was improved by the HTS coil structures using the narrow REBCO wires. Particularly, the receiving power density of the single pancake coil using the twisted narrow wire in parallel in the coil radial direction increased to about 1.5 times that of the single pancake coil using the wide wire.

    DOI： 10.1109/tasc.2022.3169997

    Web of Science

    researchmap

  • Thermal Characteristics of REBCO Coil in a Wireless Power Transmission System for the Railway Vehicle in Liquid Nitrogen Reviewed

    Ryota Inoue, Hiroshi Ueda, SeokBeom Kim, Makoto Tsuda

    IEEE Transactions on Applied Superconductivity   31 ( 5 )   1 - 5   2021.8

    　More details

    Authorship：Lead author   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    A wireless power transmission (WPT) system using the high temperature superconducting (HTS) coil for a railway vehicle is required to transmit the electric power of several hundred kW in a short time (60 s). In order to design the WPT system using HTS coil with the thermal stability, and it is necessary to clarify the thermal characteristics of the HTS coil at the operating current in kHz band and the operating conditions considering thermal stability in the WPT system. We analyzed the frequency characteristics of the critical current in the HTS coil above 1 kHz and investigated the operating conditions considering thermal stability in the WPT system for the railway vehicle using HTS coil in liquid nitrogen. As a result, the critical current of the HTS coil in the kHz band decreased with the frequency. This is because the AC loss in the HTS coil increased with the frequency, and the critical current density of the HTS coil decreased with increasing the surface temperature. In order to design the HTS coil with thermal stability in the kHz band, and it is necessary to operate the HTS coil on alternating current less than about 50% of the critical current measured by direct current. We found that the thermally stable WPT system capable of fast charging for 60 seconds can be realized by operating current at the frequency of about 2 kHz.

    DOI： 10.1109/tasc.2021.3059234

    Scopus

    researchmap

  • Turn-to-Turn Contact Resistance Measurement of No-Insulation REBCO Pancake Coil: External Field Dependence Reviewed

    So Noguchi, Shunpei Mori, Takanobu Mato, Takahiro Tatsuta, Daisuke Nishikawa, Kohei Miyamoto, Ryota Inoue, Hiroshi Ueda, SeokBeom Kim

    IEEE Transactions on Applied Superconductivity   31 ( 5 )   1 - 5   2021.8

    　More details

    Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    The characteristics of no-insulation high-temperature superconducting (HTS) manet is dominated by the magnitude of the turn-to-turn contact resistance. A few techniques have been proposed to increase the turn-to-turn contact resistance. The relation between the turn-to-turn contact resistance and the magnet stability has also been investigated in simulations. Although the turn-to-turn contact resistance measurement was only the sudden-discharging method before, we proposed a low-frequency-AC current (LFAC) method. Using our proposed method, it is possible to measure the turn-to-turn contact resistance under various conditions. In a previous paper, we measured it when charging DC current to a single pancake coil. In this paper, the turn-to-turn contact resistance was measured by the LFAC method when an external field of 1-3 T was applied to a single pancake coil. The coil strain was also measured, and the relation of the turn-to-turn contact resistance and the coil strain was also discussed.

    DOI： 10.1109/tasc.2021.3070232

    Scopus

    researchmap

  • Numerical Evaluation of Thermal and Electromagnetic Stress in Frame-Reinforced Stacked REBCO Pancakes Coils Reviewed

    Keisuke Tokunaga, SeokBeom Kim, Ryota Inoue, Hiroshi Ueda

    IEEE Transactions on Applied Superconductivity   31 ( 5 )   1 - 5   2021.8

    　More details

    Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    To achieve high-field rare-earth barium copper oxide (REBCO) coils, the mechanism of the deterioration of or damage to such coils needs to be clarified. A REBCO coil experiences various stresses and strains during the winding, cooling down, charging, and discharging processes. Furthermore, the additional force and stress due to a screening current has become an issue in REBCO coils. To protect REBCO coils from large electromagnetic stress in a high field, a reinforcement structure called the Y-based oxide superconductor and reinforcing outer integrated (YOROI) coil was proposed. This study numerically evaluated the effect of the YOROI coil structures against thermal and electromagnetic stress using a two-dimensional axisymmetric structural analysis. This simulation considered the following: 1) the mechanical stress induced by 10 N of winding tension, 2) thermal stress during cooling from 300 K to 10 K, and 3) electromagnetic stress, which included the additional stress due to a screening current during the charging process. The mechanical behavior due to each process was investigated, and the effect of the YOROI structures was also examined.

    DOI： 10.1109/tasc.2021.3060702

    Scopus

    researchmap

  • Study on the current bypassing and mechanical properties of no-insulation HTS coil with metallic protection ring Reviewed

    Daisuke Nishikawa, Kohei Miyamoto, Hirotaka Kobayashi, Ryota Inoue, Hiroshi Ueda, Seokbeom Kim

    IEEE Transactions on Applied Superconductivity   31 ( 5 )   1 - 1   2021

    　More details

    Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2021.3063654

    researchmap

  • Numerical evaluation on electromagnetic and thermal stresses in non-circular REBCO pancake coils of multi-coil system for Skeleton Cyclotron Reviewed

    Hiroshi Ueda, Yuta Miyake, Yuta Awazu, Ryota Inoue, Seokbeom Kim, Tomonori Watanabe, Shigeo Nagaya, So Noguchi, Mitsuhiro Fukuda, Atsushi Ishiyama

    IEEE Transactions on Applied Superconductivity   31 ( 5 )   1 - 1   2021

    　More details

    Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

    DOI： 10.1109/tasc.2021.3072871

    researchmap

  • 高温超電導コイルを用いた鉄道用非接触給電システムの急速充電時における電力伝送特性 Reviewed

    井上良太, 五十嵐健太, 長﨑陽, 津田理, 松木英敏, 宮城大輔

    低温工学   55 ( 1 )   62 - 69   2020.1

    　More details

    Authorship：Lead author   Language：Japanese  

    researchmap

  • Electric Power Transmission Characteristics of a Wireless Power Transmission System Using High Temperature Superconducting Coils for Railway Vehicle Reviewed

    Ryota Inoue, Kenta Igarashi, Yoh Nagasaki, Daisuke Miyagi, Makoto Tsuda, Hidetoshi Matsuki

    IEEE Transactions on Applied Superconductivity   29 ( 5 )   2019.8

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

    © 2002-2011 IEEE. In this paper, we investigated a large-capacity Wireless Power Transmission (WPT) system operating in the kHz frequency band using high-temperature superconducting (HTS) coils for a railway vehicle. We analyzed the ac losses of the HTS coils using finite element method (FEM) and obtained the transmission efficiency at the power transmission of 38.7 kW at 0.8 and 4.3 kHz. As a result, we clarified that the transmission efficiency between the primary HTS coil and the secondary HTS coil of the WPT system for the railway vehicle is more than 90%. The heat generation in the coils can be suppressed by using the HTS coils for the WPT system. The ac losses per cycle (J/cycle) increased as operating frequency decreased since the HTS tape length increased with the lower operating frequency to achieve the same power transmission. However, the total loss per unit time (W) of the HTS coils did not nearly increase with the frequency. This result suggests that the WPT system using the HTS coil can be operated at the low-frequency region around 1 kHz. The system efficiency including the cryocooler power loss was lower than the transmission efficiency using copper coils. However, the analysis result shows that, if the critical current density of a commercial HTS tape at 77 K increases by approximately four times, the WPT system with HTS coils can realize a higher-efficiency and longer-time operation in a low frequency region of kHz than the system with the copper coils.

    DOI： 10.1109/TASC.2019.2904649

    Scopus

    researchmap

  • Magnetization Loss Characteristics of a GdBCO Tape in kHz Frequency Band Reviewed

    Ryota Inoue, Daisuke Miyagi, Makoto Tsuda, H Idetoshi Matsuki

    IEEE Transactions on Applied Superconductivity   28 ( 4 )   2018.6

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    We have investigated the application of a high-temperature superconducting (HTS) coil to a high-power wireless power transmission system operated in the frequency region less than 10 kHz. In order to reduce the ac loss of the HTS coil, it is necessary to clarify the characteristics of magnetization loss in the HTS tape with a copper layer in the kHz frequency band. Therefore, we prepared GdBCO tapes with and without the copper layer and measured the magnetization loss of the GdBCO tape exposed to a vertical magnetic field in the kHz frequency band. We analyzed the ac losses of the GdBCO layer, the copper layer, and the other layers within the tape by a finite element method analysis. The influence of the copper layer thickness on the ac loss in each layer was investigated by a finite element method (FEM) analysis. The magnetization loss per cycle of the GdBCO tape slightly decreased with the frequency. The magnetization loss, however, can be approximately estimated by Brandt's formula with a certain accuracy when the n value of the tape is large. In the GdBCO tape with the copper layer, when the external magnetic field was large, the magnetization loss per cycle of the GdBCO layer was larger than the copper layer loss. The magnetization loss, however, decreased and the copper layer loss increased with the thickness of the copper layer. The total loss of the GdBCO tape can be reduced by placing the coppers layer near the GdBCO layer.

    DOI： 10.1109/TASC.2018.2820734

    Scopus

    researchmap

  • High-Efficiency Transmission of a Wireless Power Transmission System for Low-Frequency Using REBCO Double-Pancake Coils Reviewed

    Ryota Inoue, Daisuke Miyagi, Makoto Tsuda, Hidetoshi Matsuki

    IEEE Transactions on Applied Superconductivity   27 ( 1 )   2017.1

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    Wireless power transmission has been investigated to realize more efficient and more convenient noncontact power transmission systems for electric tramways, electric vehicles, portable telephones, and so on. Since the magnetic resonance type wireless power transmission system is often used in frequency regions of megahertz, there are some problems, such as the increase of wire resistance due to skin effect and a switching loss in converter. Therefore, it is expected to realize high-power wireless power transmission in low-frequency regions of kilohertz. In a wireless power transmission system using copper coils, however, the transmission efficiency decreases with the decrease of resonance frequency because quality factor decreases with the decrease of the resonance frequency. Therefore, we fabricated a model system using high-Temperature superconducting (HTS) double-pancake coils composed of REBCO tape and investigated the transmission efficiency characteristics to evaluate the possibility of application of the HTS coil to a high-efficiency wireless power transmission system operated in the low-frequency region of kilohertz. In the copper coil system, the transmission efficiency increases with the resonance frequency. In the HTS coil system, however, a high-efficiency transmission was obtained, even at a low-resonance frequency, due to a large quality factor at low frequency. Moreover, in the wireless power transmission system using HTS coils, the transmission efficiency was high not only at the resonance frequency but also around the resonance frequency. From these results, we believe that HTS coil can realize the high-efficiency wireless power transmission in a low-frequency region of kilohertz.

    DOI： 10.1109/TASC.2016.2629263

    Scopus

    researchmap

  • AC Loss Characteristics in Kilohertz Frequency Band of a High-Temperature Superconductor Coil for a Wireless Power Transmission System Reviewed

    Ryota Inoue, Daisuke Miyagi, Makoto Tsuda, Hidetoshi Matsuki

    IEEE Transactions on Applied Superconductivity   27 ( 4 )   2017.1

    　More details

    Authorship：Lead author   Language：English  

    researchmap

▼display all

MISC

  • Eddy Current Analysis of Large-Capacity Litz Wires in an External Alternating Magnetic Field

    I - 423 - I - 424   2024.8

    　More details

    Authorship：Lead author   Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

    researchmap

  • Measurement of Electric Potentials in Voltage-distributed Open Coil for Wireless Power Transmission

    I - 193 - I - 194   2024.8

    　More details

    Authorship：Lead author   Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

    researchmap

  • 「スケルトン・サイクロトロン」用REBCOコイルシステムの開発（2024年春）－ 1/2スケール実証用REBCOコイルシステムの過渡的電磁力解析 －

    植田 浩史, 山下 葵, 廣田, 南前 俊介, 井上 良太, 金 錫範, 野口 聡, 渡部 智則, 福田 光宏, 石山 敦士

    低温工学・超電導学会講演概要集   107   18   2024.5

    　More details

    Language：Japanese  

    researchmap

  • 液体窒素温度におけるフェライトおよびダストコアの磁気測定

    井上 良太, 白石 智也, 植田 浩史, 金 錫範

    低温工学・超電導学会講演概要集   107   36   2024.5

    　More details

    Authorship：Lead author   Language：Japanese  

    researchmap

  • A Study on the Structural Design for Large Capacity Litz Wires

    2024.3

    　More details

    Authorship：Lead author  

    researchmap

  • 交流通電時におけるリッツ線内の素線軌跡を考慮した等価回路モデルの実験的検証

    髙田 隆一, 井上 良太, 植田 浩史, 金 錫範

    令和6年電気学会全国大会講演集   2024.3

    　More details

  • Basic Study on the Structural Design for Large-Capacity Litz Wires Using an Equivalent Circuit Model Considering the Path of All Strands

    Ryota Inoue, Ryuichi Takada, Hiroshi Ueda, SeokBeom Kim

    IEEE Energy Conversion Conference and Expo (ECCE2024)   2024

    　More details

  • 「スケルトン・サイクロトロン」用REBCOコイルシステムの開発（2023年秋）－ 1/2スケール実証用REBCOコイルシステムの機械特性評価 －

    植田 浩史, 山下 葵, 小前 諒太, 井上 良太, 金 錫範, 野口 聡, 渡部 智則, 吉田 潤, 西島 元, 福田 光宏, 熊谷 塁, 石山 敦士

    低温工学・超電導学会講演概要集   106   128   2023.12

    　More details

    Language：Japanese  

    researchmap

  • ジシクロペンタジエン樹脂で含侵した伝導冷却用REBCOコイルの伝熱特性および超電導特性評価

    塩﨑琉登, 薦田遥暉, 高田隆一, 井上良太, 植田浩史, 金錫範

    2023年度（第74回）電気・情報関連学会中国支部連合大会   2023.10

    　More details

    Language：Japanese  

    researchmap

  • 伝導冷却下におけるパルス通電法を用いた低温超電導線材の臨界電流評価

    錦織敏志, 尾上凜空, 坂本知也, 井上良太, 植田浩史, 金錫範, 菊池章弘, 飯嶋安男

    2023年度（第74回）電気・情報関連学会中国支部連合大会   2023.10

    　More details

  • 高温超電導コイルを用いたMRI装置の励磁波形の違いによる遮蔽電流磁場への影響

    今井拓弥, 島尚徳, 青木一馬, 井上良太, 植田浩史, 金錫範

    2023年度（第74回）電気・情報関連学会中国支部連合大会   2023.10

    　More details

  • 複数受電コイルを適用した小型船舶向けワイヤレス給電の電力伝送特性の検討

    大川佳一, 米田昇平, 井上良太, 石飛 学

    日本マリンエンジニアリング学会   2023.9

    　More details

  • 大容量非接触給電システムに向けた電圧分散型オープンコイルの電圧分布測定

    山本優作, 小林宏泰, 早乙女英夫, 宮城大輔, 井上良太

    2023年電気学会産業応用部門大会講演集   2023.8

    　More details

  • 船舶向けの大容量応用を目的としたワイヤレス給電装置の基礎検討

    米田昇平, 大出 剛, 井上良太, 石飛 学

    2023年電気学会産業応用部門大会講演集   2023.8

    　More details

  • 急速充電を実現する超電導非接触給電システムに適した共振回路方式の検討

    井上 良太, 岩本 貴大, 薦田 遥暉, 植田 浩史, 金 錫範

    低温工学・超電導学会講演概要集   105   23   2023.5

    　More details

    Authorship：Lead author   Language：Japanese  

    researchmap

  • 「スケルトン・サイクロトロン」用REBCOコイルシステムの開発（2023年春）：（その４）1/2スケール実証用REBCOコイルシステムのひずみ評価

    植田 浩史, 山下 葵, 小前 諒太, 井上 良太, 金 錫範, 野口 聡, 渡部 智則, 吉田 潤, 西島 元, 福田 光宏, 熊谷 塁, 石山 敦士

    低温工学・超電導学会講演概要集   105   59   2023.5

    　More details

    Language：Japanese  

    researchmap

  • Technology Trends of Wireless Power Transmission Systems Using High Temperature Superconducting Coils Invited Reviewed

    Ryota INOUE, Daisuke MIYAGI

    TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)   58 ( 1 )   3 - 10   2023.1

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：Cryogenic Association of Japan  

    DOI： 10.2221/jcsj.58.3

    researchmap

  • A High-efficiency and High-capacity Wireless Power Transmission System Using High-temperature Superconducting Coils Invited Reviewed

    Ryota INOUE, Daisuke MIYAGI, Makoto TSUDA

    TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)   58 ( 1 )   11 - 18   2023.1

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：Cryogenic Association of Japan  

    DOI： 10.2221/jcsj.58.11

    researchmap

  • 局所磁場を印加した非円形無絶縁高温超電導コイルの遮蔽電流磁場測定

    山下葵, 仲井悠貴, 小前諒太, 金錫範, 井上良太, 植田浩史

    2022年度(第73回)電気・情報関連学会中国支部連合大会 論文集   2022.10

    　More details

    Language：Japanese  

    researchmap

  • 局所的な劣化を有するREBCO線材のkHz帯における交流通電損失特性

    薦田遥暉, 松尾大樹, 井上雄太, 井上良太, 植田浩史, 金錫範

    2022年度(第73回)電気・情報関連学会中国支部連合大会 論文集   2022.10

    　More details

    Language：Japanese  

    researchmap

  • 超電導コイルと銅コイルを用いた大容量非接触給電システムにおける送受電コイル形状の検討

    岩本貴大, 松尾大樹, 井上雄太, 井上良太, 植田浩史, 金錫範

    2022年度(第73回)電気・情報関連学会中国支部連合大会 論文集   2022.10

    　More details

    Language：Japanese  

    researchmap

  • 伝導冷却下における柔軟性極細Nb3Al超電導線材の臨界電流の曲げ特性に関する研究

    尾上凜空, 坂本知也, 福田響, 井上良太, 植田浩史, 金錫範, 菊池章弘, 飯嶋安男

    2022年度(第73回)電気・情報関連学会中国支部連合大会 論文集   2022.10

    　More details

    Language：Japanese  

    researchmap

  • 高温超電導バルク体を用いた磁気浮上搬送装置のための三次元電磁界解析

    髙田隆一, 植木駿斗, 木庭駿, 前田裕貴, 井上良太, 植田浩史, 金錫範

    2022年度(第73回)電気・情報関連学会中国支部連合大会 論文集   2022.10

    　More details

    Language：Japanese  

    researchmap

  • 高温超電導線材の集合導体化に向けたツイストREBCO線材の交流磁化損失測定

    大橋千波也, 原田亮, 井上良太, 金錫範, 植田浩史

    2022年度(第73回)電気・情報関連学会中国支部連合大会 論文集   2022.10

    　More details

    Language：Japanese  

    researchmap

  • Electric power transmission characteristics in the WPT system for railway vehicle using the non-circular HTS coils

    井上良太, 井上雄太, 植田浩史, KIM SeokBeom

    低温工学・超電導学会講演概要集   103   14   2022.6

    　More details

    Authorship：Lead author  

    J-GLOBAL

    researchmap

  • Investigating of the measurement accuracy of the contact resistance in NI REBCO coil by LFAC method

    井上良太, 宮本康平, 小林大剛, 植田浩史, KIM SeokBeom, 野口聡

    低温工学・超電導学会講演概要集   103   98   2022.6

    　More details

    Authorship：Lead author  

    J-GLOBAL

    researchmap

  • Current Behavior Simulation of NI REBCO Coils at Turn-To-Turn Contact Resistance Measurement by AC Current

    間藤昂允, 井上良太, 植田浩史, KIM SeokBoem, 野口聡

    低温工学・超電導学会講演概要集   103   97   2022.6

    　More details

  • Development of REBCO coil system for Skeleton Cyclotron (Part 4): Evaluation of screening current and electromagnetic stress in real-scale coil system

    植田浩史, 仲井悠貴, 井上良太, KIM SeokBeom, 石山敦士, 野口聡, 渡部智則, 長屋重夫, 福田光宏, 鷲尾方一, 東達也

    低温工学・超電導学会講演概要集   103   74   2022.6

    　More details

  • 電圧分散型オープンコイルを適用した鉄道用非接触給電システムの電力伝送特性

    畠中航希, JUN YOU LEE, 小林宏泰, 早乙女英夫, 宮城大輔, 井上良太, 津田 理

    令和4年電気学会全国大会論文集   2022.3

    　More details

  • 大容量非接触給電システムに向けた電圧分散型オープンコイルの電圧分布解析

    井上良太, 畠中航希, 小林宏泰, 宮城大輔, 津田 理

    令和4年電気学会全国大会論文集   2022.3

    　More details

    Authorship：Lead author  

    researchmap

  • Study to improve the transient stability of no-insulation HTS coil by copper tape and metal ring

    佐藤大輝, 小林大剛, 宮本康平, 井上良太, 植田浩史, KIM SeokBeom

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   72nd   2021.10

    　More details

  • Study on the basic shape of a gradient coil for compact finger MRI composed of high temperature superconducting magnets

    青木一馬, 井上雄太, 大澤慶博, 井上良太, 植田浩史, KIM SeokBeom

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   72nd   2021.10

    　More details

  • Measurement of AC magnetization loss in horizontally and vertically arranged REBCO high temperature superconducting wires

    原田亮, 内藤敬介, 井上良太, KIM SeokBeom, 植田浩史

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   72nd   2021.10

    　More details

  • Study on the evaluation of critical current of low temperature superconducting wires under the conduction cooling

    坂本知也, 福田響, 井上良太, 植田浩史, KIM SeokBeom, 菊池章弘, 飯嶋安男

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   72nd   2021.10

    　More details

  • Basic study on the shape design of a single plate magnetic tester used at low temperature to evaluate the magnetic properties of high Tc superconductors

    三宅洋輔, 久米一輝, 井上良太, 植田浩史, KIM SeokBeom

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   72nd   2021.10

    　More details

  • Study on the frequency dependence of transport AC loss characteristics in MgB2 superconducting wire

    松尾大樹, 坂本知也, 福田響, 井上雄太, 井上良太, 植田浩史, KIM SeokBeom, 田中秀樹

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   72nd   2021.10

    　More details

  • Study on the structure of HIS coil for high energy density and low AC loss in wireless power transmission system

    井上良太, 植田浩史, KIM SeokBeom

    低温工学・超電導学会講演概要集   101   96   2021.5

    　More details

    Authorship：Lead author  

    J-GLOBAL

    researchmap

  • Study on the turn-to-turn contact resistance measurement of no-insulation HTS coils

    宮本康平, 小林大剛, 井上良太, 植田浩史, KIM SeokBeom, 野口聡

    低温工学・超電導学会講演概要集   101   44   2021.5

    　More details

  • Study on the critical property and AC current loss of very small diameter and flexible Nb3Al superconducting wires

    福田響, 木村諒, 井上良太, 植田浩史, KIM SeokBeom, 菊池章弘, 飯嶋安男

    低温工学・超電導学会講演概要集   101   46   2021.5

    　More details

  • Development of REBCO coil system for Skeleton Cyclotron (Part 3): Numerical Analysis on Mechanical strength of YOROI-reinforced and non-insulated non-circular REBCO pancake coil

    仲井悠貴, 三宅雄大, 井上良太, KIM SeokBeom, 植田浩史, 野口聡, 渡部智則, 長屋重夫, 福田光宏, 石山敦士

    低温工学・超電導学会講演概要集   101   130   2021.5

    　More details

  • Numerical evaluation on screening-current-induced stress in REBCO pancake coil during charging and discharging processes

    内藤敬介, 井上良太, KIM SeokBeom, 植田浩史

    低温工学・超電導学会講演概要集   101   43   2021.5

    　More details

  • ASC：交流応用

    井上良太

    冷凍部会   2021.1

    　More details

    Authorship：Lead author  

    researchmap

  • HTSコイルを用いた鉄道用非接触給電システムの熱的安定性を考慮した運転条件の検討

    井上 良太, 植田 浩史, 金 錫範, 津田 理

    低温工学・超電導学会講演概要集   100   136   2020.12

    　More details

    Authorship：Lead author  

    researchmap

  • Study on the fundamental shape of HTS magnet for compact MRI using a distributed genetic algorithm

    大澤慶博, 井上雄太, 廣瀬瞭, 井上良太, 植田浩史, KIM SeokBeom

    低温工学・超電導学会講演概要集   100   5   2020.12

    　More details

  • 高磁場REBCO無絶縁コイルの電磁・熱応力解析による補強構造評価

    徳永 佳祐, 内藤 敬介, 井上 良太, 金 錫範, 植田 浩史

    低温工学・超電導学会講演概要集   100   10   2020.12

    　More details

  • 無絶縁高温超電導コイルの反復窒素窒素冷却による巻線間接触抵抗測定に関する検討

    宮本 康平, 小林 大剛, 西川 大亮, 井上 良太, 植田 浩史, 金 錫範, 野口 聡

    低温工学・超電導学会講演概要集   100   56   2020.12

    　More details

  • Study on the thermal stability of non-insulated HIS coil with a metal ring on the outermost layer

    西川大亮, 小林大剛, 宮本康平, 井上良太, 植田浩史, KIM SeokBeom

    低温工学・超電導学会講演概要集   100   57   2020.12

    　More details

  • Measurement of the critical properties of very small diameter and flexible Nb3Al wires for the conduction-cooled superconducting applications

    木村諒, 福田響, 井上良太, 植田浩史, KIM SeokBeom, 菊池章弘, 飯嶋安男

    低温工学・超電導学会講演概要集   100   89   2020.12

    　More details

  • Fundamental study to improve the magnetic field characteristics of HTS bulk magnet for compact NMR device

    佐々木晟人, 河村康平, 井上良太, 植田浩史, KIM SeokBeom

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   71st   2020.10

    　More details

  • 交流通電による無絶縁高温超電導コイルの巻線間接触抵抗測定

    小林大剛, 宮本康平, 西川大亮, 井上良太, 植田浩史, 金錫範, 野口聡

    2020年度（第71回）電気・情報関連学会中国支部大会   2020.10

    　More details

  • Dynamic characteristics of 3-D superconducting actuator with the HTS bulk as the mover based on driving current waveform

    木庭駿, 前田裕貴, 井上良太, 植田浩史, KIM SeokBeom

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   71st   2020.10

    　More details

  • 高温超電導コイルを用いた非接触給電システムの商用周波数における電力伝送特性

    高宮裕志, 井上良太, 植田浩史, 金錫範

    2020年度（第71回）電気・情報関連学会中国支部大会   2020.10

    　More details

  • Magnetic property measurements of material for carbon steel pipes by using small-sized single sheet tester

    SONG Chaeeun, 久米一輝, 井上良太, 植田浩史, KIM SeokBeom, 廿日出好

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   71st   2020.10

    　More details

  • Fundamental shape design of high temperature superconducting magnet considering wire consumption for compact MRI

    井上雄太, 大澤慶博, 井上良太, 植田浩史, KIM SeokBeom

    電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   71st   2020.10

    　More details

  • 新開発柔軟性極細Nb3Al超電導線材の臨界特性測定

    福田響, 木村諒, 井上良太, 植田浩史, 金錫範, 菊池章弘, 飯嶋安男

    2020年度（第71回）電気・情報関連学会中国支部大会   2020.10

    　More details

  • 急速充電を低損失で実現する高温超電導コイルを用いた鉄道用非接触給電システムの電力伝送特性

    井上良太, 五十嵐健太, 一條裕貴, 長﨑陽, 津田理, 松木英敏, 宮城大輔

    電気学会全国大会講演論文集   2020.3

    　More details

    Authorship：Lead author  

    researchmap

  • The ultra-fine Nb3Al monofilament strands and round cables

    菊池章弘, 飯嶋安男, 平田和人, 二森茂樹, 西島元, 北口仁, 瀧川博幸, 土谷悦子, 山本優, 河野雅俊, 木村基良, 今仁順也, 永松純, 大坪正人, 一瀬中, 大内徳人, 有本靖, WANG Xudong, ZONG Zanguo, 土屋清澄, 青木和之, 川井正徳, KIM SeokBeom, 植田浩史, 井上良太, 木原工, 中村武恒

    低温工学・超電導学会講演概要集   100th   2020

    　More details

  • Numerical evaluation on Reinforced Structure for Noncircular No-Insulation REBCO coil

    三宅雄大, 仲井悠貴, 井上良太, KIM Seokbeom, 植田浩史, 野口聡, 渡部智則, 長屋重夫, 福田光宏, 石山敦士

    低温工学・超電導学会講演概要集   100th   2020

    　More details

  • Numerical evaluation on coupling and screening currents in HTS coils wound with REBCO bundle conductor

    植田浩史, 徳永佳祐, 内藤敬介, 井上良太, KIM SeokBeom

    低温工学・超電導学会講演概要集   100th   2020

    　More details

  • Numerical evaluation on stress and strain of high-field REBCO pancake coil in consideration of winding, cooling and excitation processes

    植田浩史, 徳永佳祐, 内藤敬介, 井上良太, KIM SeokBeom

    低温工学・超電導学会講演概要集   100th   2020

    　More details

  • 鉄道用非接触給電システムに向けた高温超電導コイルの低損失化

    井上良太, 五十嵐健太, 一條裕貴, 長﨑陽, 津田理, 松木英敏, 宮城大輔

    電気学会研究会資料（金属・セラミックス・超電導機器）   27 - 32   2019.12

    　More details

    Authorship：Lead author  

    researchmap

  • 高温超電導コイルを用いた鉄道用非接触給電システムの電力伝送効率

    井上良太, 五十嵐健太, 長﨑陽, 宮城大輔, 津田理, 松木英敏

    電気学会全国大会講演論文集   271   2019.3

    　More details

    Authorship：Lead author  

    researchmap

  • 共振電圧を低減する電圧分散型オープンコイルの基礎的検討

    五十嵐健太, 井上良太, 長﨑陽, 津田理, 宮城大輔

    電気関係学会東北支部連合大会講演論文集   2019

    　More details

  • 高温超電導コイルを用いた鉄道用非接触給電システムの概念設計

    井上良太, 五十嵐健太, 長﨑陽, 津田理, 松木英敏, 宮城大輔

    2019年電気学会産業応用部門大会講演論文集   2019

    　More details

    Authorship：Lead author  

    researchmap

  • 高温超電導コイルを用いた鉄道用非接触給電システムの低周波領域における電力伝送特性

    井上良太, 五十嵐健太, 長﨑陽, 宮城大輔, 津田理, 松木英敏

    低温工学・超電導学会講演概要集   97   178   2018.11

    　More details

    Authorship：Lead author  

    researchmap

  • 非接触給電システムに適した高温超電導コイルのコイル形状に関する一検討

    井上良太, 五十嵐健太, 宮城大輔, 津田理, 松木英敏

    低温工学・超電導学会講演概要集   96   11   2018.5

    　More details

    Authorship：Lead author  

    researchmap

  • kHz帯における垂直磁場下の安定化層がGdBCO線材の交流損失に与える影響

    井上良太, 宮城大輔, 津田理, 松木英敏

    低温工学・超電導学会講演概要集   95   31   2017.11

    　More details

    Authorship：Lead author  

    researchmap

  • 高温超電導コイルを用いた低周波用非接触給電システムにおける電力伝送特性の基礎的検討

    井上良太, 宮城大輔, 津田理, 松木英敏

    信学技報   117 ( 241 )   17 - 21   2017.10

    　More details

    Authorship：Lead author  

    researchmap

  • 非接触給電システム用高温超電導コイルの交流損失と電力伝送特性に関する研究

    井上 良太

    東北大学電通談話会記録   86 ( 1 )   60 - 61   2017.8

    　More details

    Authorship：Lead author   Language：Japanese   Publisher：東北大学電気通信研究所  

    CiNii Article

    researchmap

  • ワイヤレス電力伝送用HTSダブルパンケーキコイルにおけるkHz帯交流損失の基礎特性

    井上 良太, 宮城 大輔, 津田 理, 松木 英敏

    電気学会超電導機器研究会資料   53 - 58   2017

    　More details

    Authorship：Lead author  

    researchmap

  • 高温超電導コイルを用いたS-P型非接触給電システムにおける電力伝送効率の基礎的検討

    宮城大輔, 田村紳, 井上良太, 津田理, 松木英敏

    低温工学・超電導学会講演概要集   94   163   2017

    　More details

  • 超電導非接触給電に向けたY系高温超電導線材のkHz帯における交流損失特性

    井上良太, 宮城大輔, 津田理, 松木英敏

    低温工学・超電導学会講演概要集   94   145   2017

    　More details

    Authorship：Lead author  

    researchmap

  • 高温超電導コイルを用いた低周波大容量用非接触給電システムの検討

    井上良太, 宮城大輔, 津田理, 松木英敏

    平成28年電気学会全国大会講演論文集   4   406   2016.3

    　More details

    Authorship：Lead author  

    researchmap

  • 高温超電導非接触給電システムにおける電力伝送特性の負荷依存性

    井上 良太, 宮城 大輔, 津田 理, 松木 英敏

    平成28年電気関係学会東北支部連合大会講演論文集   2016

    　More details

    Authorship：Lead author  

    researchmap

  • 低周波大容量化に向けた超電導非接触給電システムの電力伝送特性

    井上 良太, 宮城 大輔, 津田 理, 松木 英敏

    電気学会研究会資料マグネティックス研究会資料   5 - 10   2016

    　More details

    Authorship：Lead author  

    researchmap

  • 磁気回路法を用いた高周波多巻線トランスの実用的等価回路

    井上 森平, 井上 良太, 服部 文哉, 石飛 学

    電気学会研究会資料マグネティックス研究会資料   11 - 16   2016

    　More details

  • 高周波多巻線トランスの実用的等価回路とその変換理論

    井上 良太, 石飛 学

    パワーエレクトロニクス学会誌   40   236 - 236   2014

    　More details

    Authorship：Lead author   Language：Japanese   Publisher：パワーエレクトロニクス学会  

    DOI： 10.5416/jipe.40.236

    CiNii Article

    researchmap

  • スピン衛星用自立協調電源システムにおける一検討

    井上 良太, 石飛 学

    パワーエレクトロニクス学会誌   38   192   2012

    　More details

    Authorship：Lead author  

    researchmap

▼display all

Presentations

  • EV用超電導非接触給電システムにおけるフェライト板の配置による電力伝送効率

    岩本 貴大, 塩﨑 琉登, 井上 良太, 植田 浩史, 金 錫範

    2024年度秋季低温工学・超電導学会  2024.11.26 

    　More details

    Event date： 2024.11.25 - 2024.11.27

    Presentation type：Oral presentation (general)  

    researchmap

  • 非接触給電システムにおける高温超電導コイルの運転中断線への対策 -断線時におけるコイルの電流分布特性-

    薦田 遥暉, 井上 良太, 植田 浩史, 金 錫範

    2024年度秋季低温工学・超電導学会  2024.11.26 

    　More details

    Event date： 2024.11.25 - 2024.11.27

    Presentation type：Oral presentation (general)  

    researchmap

  • 非接触給電システムにおける高温超電導コイルの運転中断線への対策 -断線時における非接触給電システムの電力伝送特性-

    井上 良太, 薦田 遥暉, 植田 浩史, 金 錫範

    2024年度秋季低温工学・超電導学会  2024.11.26 

    　More details

    Event date： 2024.11.25 - 2024.11.27

    Presentation type：Oral presentation (general)  

    researchmap

  • Basic Study on the Structural Design for Large-Capacity Litz Wires Using an Equivalent Circuit Model Considering the Path of All Strands

    Ryota Inoue, Ryuichi Takada, Hiroshi Ueda, SeokBeom Kim

    IEEE Energy Conversion Conference and Expo (ECCE2024)  2024.10 

    　More details

    Event date： 2024.10.20 - 2024.10.24

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Basic study on protection method for HTS coil with AC current in wireless power transmission system

    Ryota Inoue, Haruki Komoda, Hiroshi Ueda, SeokBeom Kim

    The Applied Superconductivity Conference (ASC 2024)  2024.9.3 

    　More details

    Event date： 2024.9.1 - 2024.9.6

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Electric power transmission characteristics of WPT system using HTS and copper coils coupled with magnetic material

    Ryota Inoue, Takahiro Iwamoto, Hiroshi Ueda, SeokBeom Kim

    The Applied Superconductivity Conference (ASC 2024)  2024.9.3 

    　More details

    Event date： 2024.9.1 - 2024.9.6

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Imbalance force and local stress in NI-REBCO coil system of Skeleton Cyclotron for cancer therapy

    Hiroshi Ueda, Aoi Yamashita, Ryota Inoue, SeokBeom Kim, So Noguchi, Tomonori WATANABE, Mitsuhiro Fukuda, Atsushi Ishiyama

    The Applied Superconductivity Conference (ASC 2024)  2024.9.2 

    　More details

    Event date： 2024.9.1 - 2024.9.6

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Critical current and AC loss characteristics of ultrafine Nb3Al and Nb3Sn superconducting wires under conduction cooling

    SeokBeom Kim, Tomoya Sakamoto, Riku Onoue, Satoshi Nishikohri, Ryota Inoue, Hiroshi Ueda, Akihiro Kikuchi, Yasuo Iijima

    The Applied Superconductivity Conference (ASC 2024)  2024.9.2 

    　More details

    Event date： 2024.9.1 - 2024.9.6

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Design of multiple REBCO sector coils for improving focusing force in Skeleton Cyclotron for cancer therapy

    Aoi Yamashita, Ryota Inoue, SeokBeom Kim, Hiroshi Ueda, So Noguchi, Tomonori WATANABE, Mitsuhiro Fukuda, Atsushi Ishiyama

    The Applied Superconductivity Conference (ASC 2024)  2024.9.2 

    　More details

    Event date： 2024.9.1 - 2024.9.6

    Language：English   Presentation type：Poster presentation  

    researchmap

  • 交流磁場下における大容量リッツ線内の渦電流解析

    井上良太, 髙田隆一, 植田浩史, 金 錫範

    2024年電気学会産業応用部門大会，R1-21 パワーエレクトロニクス（受動部品（II））  2024.8.30 

    　More details

    Event date： 2024.8.28 - 2024.8.30

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 非接触電力伝送時における電圧分散型オープンコイル内の電位分布測定

    伊藤香葉子, 浅井翔太, 宮城大輔, 小林宏康, 井上良太

    2024年電気学会産業応用部門大会，R1-9 パワーエレクトロニクス（非接触給電システム（I））  2024.8.29 

    　More details

    Event date： 2024.8.28 - 2024.8.30

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 液体窒素温度におけるフェライトおよびダストコアの磁気測定

    井上 良太, 白石 智也, 植田 浩史, 金 錫範

    2024年度春季低温工学・超電導学会  2024.5.23 

    　More details

    Event date： 2024.5.23 - 2024.5.25

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 「スケルトン・サイクロトロン」用REBCOコイルシステムの開発（2023年秋）－ 1/2スケール実証用REBCOコイルシステムの機械特性評価 －

    植田 浩史, 山下 葵, 小前 諒太, 井上 良太, 金 錫範, 野口 聡, 渡部 智則, 吉田 潤, 西島 元, 福田 光宏, 熊谷 塁, 石山 敦士

    第106回 低温工学・超電導学会研究発表会  2023.12.6 

    　More details

    Event date： 2023.12.4 - 2023.12.6

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • EUCAS：電力・産業応用 Invited

    井上良太

    第4回冷凍部会 例会 −国際会議報告会−  2023.10.20 

    　More details

    Event date： 2023.10.20 - 2023.10.21

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 実験と解析から学ぶ高温超電導線材の交流損失特性 Invited

    井上良太

    東北・北海道支部 2023年度 学生研究交流セミナー  2023.10.3 

    　More details

    Event date： 2023.10.3

    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    researchmap

  • 複数受電コイルを適用した小型船舶向けワイヤレス給電の電力伝送特性の検討

    大川佳一, 米田昇平, 井上良太, 石飛 学

    日本マリンエンジニアリング学会  2023.9.20 

    　More details

    Event date： 2023.9.19 - 2023.9.21

    Presentation type：Oral presentation (general)  

    researchmap

  • Numerical investigation of current distribution in composite multifilamentary/bundle HTS conductor

    Hiroshi Ueda, Ryo Harada, Chihaya OHASHI, Ryota Inoue, SeokBeom Kim

    MT-28 International Conference on Magnet Technology  2023.9.13 

    　More details

    Event date： 2023.9.10 - 2023.9.15

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Experimental and analytical study on contact resistance and current distribution of NI HTS coils in low-frequency AC method

    SeokBeom Kim, Daiki Sato, Ryota Inoue, Hiroshi. Ueda, Takanobu Mato, So Noguchi

    MT-28 International Conference on Magnet Technology  2023.9.13 

    　More details

    Event date： 2023.9.10 - 2023.9.15

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Optimal Design of Resonance Circuit Topology for a Wireless Power Transmission using HTS coils

    Ryota Inoue, Takahiro Iwamoto, Haruki Komoda, Hiroshi Ueda, SeokBeom Kim

    MT-28 International Conference on Magnet Technology  2023.9.12 

    　More details

    Event date： 2023.9.10 - 2023.9.15

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Experiment and simulation on mechanical behavior in 1/2-scale demonstration REBCO coil system of Skeleton Cyclotron for cancer therapy

    Hiroshi Ueda, Ryota Komae, Aoi Yamashita, Ryota Inoue, SeokBeom Kim, So Noguchi, Tomonori Watanabe, Mitsuhiro Fukuda, Gen Nishijima, Rui Kumagai, Atsushi Ishiyama

    MT-28 International Conference on Magnet Technology  2023.9.12 

    　More details

    Event date： 2023.9.10 - 2023.9.15

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Experimental study on WPT system using HTS and copper coils for EVs

    Ryota Inoue, Takahiro Iwamoto, Haruki Komoda, Hiroshi Ueda, SeokBeom Kim

    16th European Conference on Applied Superconductivity  2023.9.5 

    　More details

    Event date： 2023.9.3 - 2023.9.7

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Magnetization method to improve the field performance of compact HTS bulks-MRI

    2023.9.5 

    　More details

    Event date： 2023.9.3 - 2023.9.7

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Turn-to-Turn Contact Resistance Measurement of NI REBCO Double Pancake Coils

    Takanobu Mato, Ryota Inoue, Hiroshi Ueda, So Noguchi

    16th European Conference on Applied Superconductivity  2023.9.4 

    　More details

    Event date： 2023.9.3 - 2023.9.7

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Mechanical stability analysis of NI-RBECO coil system for Skeleton Cyclotron

    Hiroshi Ueda, Ryota Komae, Aoi Yamashita, Ryota Inoue, SeokBeom Kim, So Noguchi, Tomonori Watanabe, Mitsuhiro Fukuda, Atsushi Ishiyama

    16th European Conference on Applied Superconductivity  2023.9.4 

    　More details

    Event date： 2023.9.3 - 2023.9.7

    Language：English   Presentation type：Poster presentation  

    researchmap

  • 「スケルトン・サイクロトロン」用REBCOコイルシステムの開発（2023年春）：（その４）1/2スケール実証用REBCOコイルシステムのひずみ評価

    植田 浩史, 山下 葵, 小前 諒太, 井上 良太, 金 諒太, 野口 聡, 渡部 智則, 吉田 潤, 西島 元, 福田 光宏, 熊谷 塁, 石山 敦士

    2023年度春季低温工学・超電導学会  2023.6.1 

    　More details

    Event date： 2023.5.31 - 2023.6.2

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 急速充電を実現する超電導非接触給電システムに適した共振回路方式の検討

    井上 良太, 岩本 貴大, 薦田 遥暉, 植田 浩史, 金 錫範

    2023年度春季低温工学・超電導学会  2023.5.31 

    　More details

    Event date： 2023.5.31 - 2023.6.2

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • Investigation of coil structure robust against misalignment between coils in a wireless power transmission system using HTS coils for railway vehicle

    Ryota Inoue, Yuta Inoue, Hiroshi Ueda, SeokBeom Kim

    Applied Superconductivity Conference 2022  2022.10.27 

    　More details

    Event date： 2022.10.23 - 2022.10.28

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Basic study of a wireless power transmission system using superconducting coil as a ground-side coil for electric vehicles

    Yuta Inoue, Ryota Inoue, Hiroshi Ueda, SeokBeom Kim

    Applied Superconductivity Conference 2022  2022.10.26 

    　More details

    Event date： 2022.10.23 - 2022.10.28

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Combined effects of coupling and screening currents in multifilamentary HTS wire and composite HTS conductor

    Hiroshi Ueda, Ryo Harada, Keisuke Naito, Ryota Inoue, SeokBeom Kim

    Applied Superconductivity Conference 2022  2022.10.26 

    　More details

    Event date： 2022.10.23 - 2022.10.28

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Contact resistance and current characteristics of NI HTS coil in low frequency AC current method

    SeokBeom Kim, Hirotaka Kobayashi, Daiki Sato, Ryota Inoue, Hiroshi Ueda, Takanobu Mato, So Noguchi

    Applied Superconductivity Conference 2022  2022.10.25 

    　More details

    Event date： 2022.10.23 - 2022.10.28

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Evaluation of critical current and AC loss characteristics of flexible Nb3Al superconducting wires in conduction cooling system

    HIBIKI FUKUDA, SeokBeom Kim, Tomoya Sakamoto, Ryota Inoue, Hiroshi Ueda, Yasuo Iijima, Akihiro Kikuchi

    Applied Superconductivity Conference 2022  2022.10.25 

    　More details

    Event date： 2022.10.23 - 2022.10.28

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Accuracy compensation of turn-to-turn contact resistance measurement of no-insulation REBCO coils by low-frequency-AC-current (LFAC) method

    Takanobu Mato, Ryota Inoue, Hiroshi Ueda, SeokBeom Kim, So Noguchi

    Applied Superconductivity Conference 2022  2022.10.25 

    　More details

    Event date： 2022.10.23 - 2022.10.28

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Analyses of deformation due to screening-current-induced force in layer-wound RRBCO insert coil for 1.3-GHz LTS/HTS NMR

    2022.10.24 

    　More details

    Event date： 2022.10.23 - 2022.10.28

    Language：English   Presentation type：Poster presentation  

    researchmap

  • 局所磁場を印加した非円形無絶縁高温超電導コイルの遮蔽電流磁場測定

    山下葵, 仲井悠貴, 小前諒太, 金錫範, 井上良太, 植田浩史

    2022年度(第73回)電気・情報関連学会中国支部連合大会  2022.10.22 

    　More details

    Event date： 2022.10.22

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 伝導冷却下における柔軟性極細Nb3Al超電導線材の臨界電流の曲げ特性に関する研究

    尾上凜空, 坂本知也, 福田響, 井上良太, 植田浩史, 金錫範, 菊池章弘, 飯嶋安男

    2022年度(第73回)電気・情報関連学会中国支部連合大会  2022.10.22 

    　More details

    Event date： 2022.10.22

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 局所的な劣化を有するREBCO線材のkHz帯における交流通電損失特性

    薦田遥暉, 松尾大樹, 井上雄太, 井上良太, 植田浩史, 金錫範

    2022年度(第73回)電気・情報関連学会中国支部連合大会  2022.10.22 

    　More details

    Event date： 2022.10.22

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 超電導コイルと銅コイルを用いた大容量非接触給電システムにおける送受電コイル形状の検討

    岩本貴大, 松尾大樹, 井上雄太, 井上良太, 植田浩史, 金錫範

    2022年度(第73回)電気・情報関連学会中国支部連合大会  2022.10.22 

    　More details

    Event date： 2022.10.22

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 高温超電導バルク体を用いた磁気浮上搬送装置のための三次元電磁界解析

    髙田隆一, 植木駿斗, 木庭駿, 前田裕貴, 井上良太, 植田浩史, 金錫範

    2022年度(第73回)電気・情報関連学会中国支部連合大会  2022.10.22 

    　More details

    Event date： 2022.10.22

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 高温超電導線材の集合導体化に向けたツイストREBCO線材の交流磁化損失測定

    大橋千波也, 原田亮, 井上良太, 金錫範, 植田浩史

    2022年度(第73回)電気・情報関連学会中国支部連合大会  2022.10.22 

    　More details

    Event date： 2022.10.22

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 交流通電による無絶縁REBCOコイルのターン間接触抵抗測定時の電流現象解析

    間藤 昂允, 井上 良太, 植田 浩史, 金 錫範, 野口 聡

    2022年度春季低温工学・超電導学会  2022.6.22 

    　More details

    Event date： 2022.6.20 - 2022.6.22

    Presentation type：Oral presentation (general)  

    researchmap

  • LFAC法を用いたNI REBCOコイルにおける接触抵抗の測定精度に関する検討

    井上 良太, 宮本 康平, 小林 大剛, 植田 浩史, 金 錫範, 野口 聡

    2022年度春季低温工学・超電導学会  2022.6.22 

    　More details

    Event date： 2022.6.20 - 2022.6.22

    Presentation type：Oral presentation (general)  

    researchmap

  • 「スケルトン・サイクロトロン」用REBCOコイルシステムの開発（その４）：実規模コイルシステムにおける遮蔽電流と電磁応力評価

    植田 浩史, 仲井 悠貴, 井上 良太, 金 錫範, 石山 敦士, 野口 聡, 渡部 智則, 長屋 重夫, 福田 光宏, 鷲尾 方一, 東 達也

    2022年度春季低温工学・超電導学会  2022.6.21 

    　More details

    Event date： 2022.6.20 - 2022.6.22

    Presentation type：Oral presentation (general)  

    researchmap

  • 非円形高温超電導コイルを用いた鉄道用非接触給電システムの電力伝送特性

    井上 良太, 井上 雄太, 植田 浩史, 金 錫範

    2022年度春季低温工学・超電導学会  2022.6.20 

    　More details

    Event date： 2022.6.20 - 2022.6.22

    Presentation type：Oral presentation (general)  

    researchmap

  • Fundamental research on development of 100 kW-class wireless power transmission system using high temperature superconducting coils Invited

    Ryota Inoue, Hiroshi Ueda, SeokBeom KIM

    34th International Symposium on Superconductivity  2021.12.1 

    　More details

    Event date： 2021.11.30 - 2021.12.2

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • Structure design on the 3-T HTS coil for desktop MRI magnet using the Distributed Genetic Algorithm method

    Yoshihiro Osawa, Yuta Inoue, Ryota Inoue, Hiroshi Ueda, SEOKBEOM KIM

    2021.11.18 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Evaluation of magnetic properties of REBCO wire by modified SST for cryogenics

    Kazuki Kume, Ryota Inoue, Hiroshi Ueda, SEOKBEOM KIM

    2021.11.18 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Study on the structure design of HTS bulk magnets for compact MRI

    SEOKBEOM KIM, Hiroshi Ueda, Joto SASAKI, Kohei KAWAMURA, Ryota Inoue

    2021.11.18 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Numerical Evaluation on Mechanical Behavior of No-insulation REBCO Pancake Coils in Skeleton Cyclotron

    Yuta MIYAKE, Yuki NAKAI, Ryota INOUE, SeokBeom KIM, Hiroshi UEDA, So NOGUCHI, Tomonori WATANABE, Shigeo NAGAYA, Mitsuhiro FUKUDA, Atsushi ISHIYAMA

    2021.11.17 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Numerical Evaluation on Quench Behavior of REBCO Coil System of Skeleton Cyclotron for Cancer Therapy

    Yuki NAKAI, Yuta MIYAKE, Ryota INOUE, SeokBeom KIM, Hiroshi UEDA, So NOGUCHI, Tomonori WATANABE, Shigeo NAGAYA, Mitsuhiro FUKUDA, Atsushi ISHIYAMA

    2021.11.17 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • The critical properties and AC loss characteristics of the developed ultra-fine and flexible Nb3Al superconducting wires

    Hibiki Fukuda, Ryo Kimura, Ryota Inoue, Hiroshi Ueda, SEOKBEOM KIM, Akihiro Kikuchi, Yasuo Iijima

    2021.11.16 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Experimental Study on the Accuracy of the Proposed LFAC Method for Measuring the Contact Resistance of NI HTS Coils

    Kohei Miyamoto, Hirotaka Kobayashi, Ryota Inoue, Hiroshi Ueda, SEOKBEOM KIM, So Noguchi

    2021.11.16 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Numerical Evaluation of Reinforcement Structure against Electromagnetic and Thermal Stresses in Stacked REBCO Pancake Coils

    Keisuke Naito, Keisuke Tokunaga, Ryota Inoue, SeokBeom Kim, Hiroshi Ueda

    2021.11.16 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Basic study on coil structure for high-temperature superconducting cable termination applying a wireless power transmission system

    Ryota Inoue, Hiroshi Ueda, SEOKBEOM KIM

    2021.11.16 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Deformation Analysis of no-insulation REBCO coils considering turn-to-turn contact configuration

    Hiroshi Ueda, Keisuke Naito, Ryota Inoue, SEOKBEOM KIM

    2021.11.16 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Study on Low Loss Coil Structure for High Energy Density of a Wireless Power Transmission System Using High Temperature Superconducting Coils for Railway Vehicle

    Ryota Inoue, Hiroshi Ueda, SEOKBEOM KIM

    2021.11.16 

    　More details

    Event date： 2021.11.15 - 2021.11.19

    Language：English   Presentation type：Poster presentation  

    researchmap

  • HTSコイルを用いた鉄道用非接触給電システムの熱的安定性を考慮した運転条件の検討

    井上 良太, 植田 浩史, 金 錫範, 津田 理

    2020年度秋季低温工学・超電導学会  2020.12.10 

    　More details

    Event date： 2020.12.8 - 2020.12.10

    Presentation type：Oral presentation (general)  

    researchmap

  • Thermal Characteristics of REBCO Wire and coil by kHz-class AC Current in Liquid Nitrogen for a Wireless Power Transmission System for Railway Vehicle

    Applied Superconductivity Conference 2020  2020.10 

    　More details

    Event date： 2020.10.24 - 2020.11.7

    researchmap

  • AC Loss Characteristics of an HTS Coil with Ferrite Cores for a Wireless Power Transmission System Invited

    Ryota Inoue, Takahiro Iwamoto, Haruki Komoda, Hiroshi Ueda, SeokBeom Kim

    37th International Symposium on Superconductivity (ISS2024)  2024.12.3 

    　More details

    Language：English   Presentation type：Oral presentation (invited, special)  

    researchmap

  • 高温超電導バルク体内の電流分布が小型MRI装置の磁場均一度に与える影響の検討

    島尚徳, 今井拓弥, 井上良太, 植田浩史, 金錫範

    2024年度(第75回)電気・情報関連学会中国支部連合大会  2024.10.26 

    　More details

    Presentation type：Oral presentation (general)  

    researchmap

  • 無絶縁バンドル導体で巻いた高温超電導コイルの電流分布解析

    水城慶祐, 植田浩史, 金錫範, 井上良太

    2024年度(第75回)電気・情報関連学会中国支部連合大会  2024.10.26 

    　More details

    Presentation type：Oral presentation (general)  

    researchmap

  • 空芯型サイクロトロンの1/2スケール実証用高温超電導コイルシステムの非一様電磁応力の数値解析

    川野颯太, 南前俊介, 廣田悠力, 山下葵, 井上良太, 金錫範, 植田浩史, 野口聡, 渡部智則, 福田光宏, 石山敦士

    2024年度(第75回)電気・情報関連学会中国支部連合大会  2024.10.26 

    　More details

    Presentation type：Oral presentation (general)  

    researchmap

  • 液体窒素下における磁性薄帯の磁気特性評価

    川原健太郎, 白石智也, 井上良太, 植田浩史, 金錫範

    2024年度(第75回)電気・情報関連学会中国支部連合大会  2024.10.26 

    　More details

    Presentation type：Oral presentation (general)  

    researchmap

  • 交流通電時におけるリッツ線内の素線軌跡を考慮した等価回路モデルの実験的検証

    髙田 隆一, 井上 良太, 植田 浩史, 金 錫範

    令和6年電気学会全国大会  2024.3 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 大容量リッツ線に向けた構造設計に関する一検討

    井上 良太, 髙田 隆一, 植田 浩史, 金 錫範

    令和6年電気学会全国大会  2024.3 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 伝導冷却下におけるパルス通電法を用いた低温超電導線材の臨界電流評価

    錦織敏志, 尾上凜空, 坂本知也, 井上良太, 植田浩史, 金錫範, 菊池章弘, 飯嶋安男

    2023年度(第74回)電気・情報関連学会中国支部連合大会  2023.10.28 

    　More details

  • ジシクロペンタジエン樹脂で含侵した伝導冷却用REBCOコイルの伝熱特性および超電導特性評価

    塩﨑琉登, 薦田遥暉, 高田隆一, 井上良太, 植田浩史, 金錫範

    2023年度(第74回)電気・情報関連学会中国支部連合大会  2023.10.28 

    　More details

    Language：Japanese  

    researchmap

  • 高温超電導コイルを用いたMRI装置の励磁波形の違いによる遮蔽電流磁場への影響

    今井拓弥, 島尚徳, 青木一馬, 井上良太, 植田浩史, 金錫範

    2023年度(第74回)電気・情報関連学会中国支部連合大会  2023.10.28 

    　More details

    Language：Japanese  

    researchmap

  • 超急速充電を目的とした超電導非接触給電システムの開発 Invited

    井上良太

    第4 3 回ＡＳＣＯＴセミナー  2023.10.16 

    　More details

    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    researchmap

  • 船舶向けの大容量応用を目的としたワイヤレス給電装置の基礎検討

    米田昇平, 大出 剛, 井上良太, 石飛 学

    2023年電気学会産業応用部門大会  2023.8.24 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 大容量非接触給電システムに向けた電圧分散型オープンコイルの電圧分布測定

    山本優作, 小林宏泰, 早乙女英夫, 宮城大輔, 井上良太

    2023年電気学会産業応用部門大会  2023.8.24 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 大容量非接触給電システムに向けた電圧分散型オープンコイルの電圧分布解析

    井上良太, 畠中航希, 小林宏泰, 宮城大輔, 津田 理

    令和4年電気学会全国大会  2022.3.23 

    　More details

  • 電圧分散型オープンコイルを適用した鉄道用非接触給電システムの電力伝送特性

    畠中航希, JUN YOU LEE, 小林宏泰, 早乙女英夫, 宮城大輔, 井上良太, 津田 理

    令和4年電気学会全国大会  2022.3.23 

    　More details

  • 高周波かつ大容量な非接触給電システムに向けた電圧分散型オープンコイルの基礎研究

    井上良太, 宮城大輔

    パワーアカデミー研究助成 2022年成果報告会  2022.3.22 

    　More details

  • 伝導冷却下における低温超電導線材の臨界電流評価に関する研究

    坂本 知也, 福田 響, 井上 良太, 植田 浩史, 金 錫範, 菊池 章弘, 飯島 安男

    2021年度（第72回）電気・情報関連学会 中国支部連合大会  2021.10.23 

    　More details

  • 高温超電導線材の磁気特性評価に向けた極低温用単板磁気試験器の形状に関する基礎研究

    三宅 洋輔, 久米 一輝, 井上 良太, 植田 浩史, 金 錫範

    2021年度（第72回）電気・情報関連学会 中国支部連合大会  2021.10.23 

    　More details

  • 二ホウ化マグネシウム超電導線材における交流通電損失特性の周波数依存性に関する研究

    松尾 大樹, 坂本 知也, 福田 響, 井上 雄太, 井上 良太, 植田 浩史, 金 錫範, 田中 秀樹

    2021年度（第72回）電気・情報関連学会 中国支部連合大会  2021.10.23 

    　More details

  • 銅テープと金属リングによる無絶縁高温超電導コイルの過渡安定性向上に関する研究

    佐藤 大輝, 小林 大剛, 宮本 康平, 井上 良太, 植田 浩史, 金 錫範

    2021年度（第72回）電気・情報関連学会 中国支部連合大会  2021.10.23 

    　More details

  • 水平および垂直配置したREBCO高温超電導線材の交流磁化損失の測定

    原田 亮, 内藤 敬介, 井上 良太, 金 錫範, 植田 浩史

    2021年度（第72回）電気・情報関連学会 中国支部連合大会  2021.10.23 

    　More details

  • 高温超電導マグネットによる指用小型MRI用の傾斜磁場コイルの基本形状に関する研究

    青木 一馬, 井上 雄太, 大澤 慶博, 井上 良太, 植田 浩史, 金 錫範

    2021年度（第72回）電気・情報関連学会 中国支部連合大会  2021.10.23 

    　More details

  • 非接触給電システム用HTSコイルの高エネルギー密度化および低損失化のための基本構造に関する検討

    井上 良太, 植田 浩史, 金 錫範

    2021年度春季低温工学・超電導学会  2021.5.21 

    　More details

  • 柔軟性極細Nb3Al超電導線材の臨界特性と交流通電損失に関する検討

    福田 響, 木村 諒, 井上 良太, 植田 浩史, 金 錫範, 菊池 章弘, 飯嶋 安男

    2021年度春季低温工学・超電導学会  2021.5 

    　More details

  • 「スケルトン・サイクロトロン」用REBCOコイルシステムの開発（その３）： YOROI補強を施した無絶縁非円形REBCOパンケーキコイルの機械強度の解析・評価

    仲井 悠貴, 三宅 雄大, 井上 良太, 金 錫範, 植田 浩史, 渡部 智則, 野口 聡, 長屋 重夫, 石山 敦士, 福田 光宏

    2021年度春季低温工学・超電導学会  2021.5 

    　More details

  • REBCOコイルにおける励消磁の遮蔽電流による不均一電磁応力解析

    内藤 敬介, 井上 良太, 金 錫範, 植田 浩史

    2021年度春季低温工学・超電導学会  2021.5 

    　More details

  • 無絶縁高温超電導コイルの巻線間接触抵抗測定に関する検討

    宮本 康平, 小林 大剛, 井上 良太, 植田 浩史, 金 錫範, 野口 聡

    2021年度春季低温工学・超電導学会  2021.5 

    　More details

  • 大容量急速充電を実現する高温超電導コイルを用いた非接触給電システムに関する研究 Invited

    第３回 若手の会セミナー，高温超電導 線材とコイル応用  2021.2.24 

    　More details

    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    researchmap

  • ASC：交流応用 Invited

    2020年度第３回 冷凍部会（公開）例会―国際会議報告会―，低温工学・超伝導工学における 国際情勢と動向について  2021.1.22 

    　More details

    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    researchmap

  • 高磁場REBCO無絶縁コイルの電磁・熱応力解析による補強構造評価

    徳永 佳祐, 内藤 敬介, 井上 良太, 金 錫範, 植田 浩史

    2020年度秋季低温工学・超電導学会  2020.12 

    　More details

  • 無絶縁高温超電導コイルの反復窒素窒素冷却による巻線間接触抵抗測定に関する検討

    宮本 康平, 小林 大剛, 西川 大亮, 井上 良太, 植田 浩史, 金 錫範, 野口 聡

    2020年度秋季低温工学・超電導学会  2020.12 

    　More details

  • コイル最外層に金属リングを施した無絶縁高温超電導コイルの熱的安定性に関する研究

    西川 大亮, 小林 大剛, 宮本 康平, 井上 良太, 植田 浩史, 金 錫範

    2020年度秋季低温工学・超電導学会  2020.12 

    　More details

  • 伝導冷却超電導応用機器に向けた柔軟性極細Nb3Al超電導線材の臨界特性測定

    木村 諒, 福田 響, 井上 良太, 植田 浩史, 金 錫範, 菊池 章弘, 飯嶋 安男

    2020年度秋季低温工学・超電導学会  2020.12 

    　More details

  • 分散型遺伝的アルゴリズムを用いた小型MRI用HTSマグネットの基本形状の検討

    大澤 慶博, 井上 雄太, 井上 良太, 植田 浩史, 金 錫範

    2020年度秋季低温工学・超電導学会  2020.12 

    　More details

  • 小型単板磁気試験器による単相鋼鋼管材の磁気特性測定

    SONG CHAE EUN, 久米一輝, 井上良太, 植田浩史, 金錫範, 廿日出好

    2020年度（第71回）電気・情報関連学会中国支部大会  2020.10 

    　More details

  • 小型MRI用高温超電導マグネットの線材使用量を考慮した基本形状設計に関する研究

    井上雄太, 大澤慶博, 井上良太, 植田浩史, 金錫範

    2020年度（第71回）電気・情報関連学会中国支部大会  2020.10 

    　More details

  • 新開発柔軟性極細Nb3Al超電導線材の臨界特性測定

    福田響, 木村諒, 井上良太, 植田浩史, 金錫範, 菊池章弘, 飯嶋安男

    2020年度（第71回）電気・情報関連学会中国支部大会  2020.10 

    　More details

  • 交流通電による無絶縁高温超電導コイルの巻線間接触抵抗測定

    小林大剛, 宮本康平, 西川大亮, 井上良太, 植田浩史, 金錫範, 野口聡

    2020年度（第71回）電気・情報関連学会中国支部大会  2020.10 

    　More details

  • 小型NMR用高温超電導バルク体マグネットの磁場特性向上に関する基礎研究

    佐々木晟人, 河村浩平, 井上良太, 植田浩史, 金錫範

    2020年度（第71回）電気・情報関連学会中国支部大会  2020.10 

    　More details

  • 高温超電導体移動子を用いた三次元アクチュエータの駆動電流波形による動的特性

    木庭駿, 前田裕貴, 井上良太, 植田浩史, 金錫範

    2020年度（第71回）電気・情報関連学会中国支部大会  2020.10 

    　More details

  • 高温超電導コイルを用いた非接触給電システムの商用周波数における電力伝送特性

    高宮裕志, 井上良太, 植田浩史, 金錫範

    2020年度（第71回）電気・情報関連学会中国支部大会  2020.10 

    　More details

  • 急速充電を低損失で実現する高温超電導コイルを用いた鉄道用非接触給電システムの電力伝送特性

    井上良太, 五十嵐健太, 一條裕貴, 長﨑陽, 津田理, 松木英敏, 宮城大輔

    令和２年 電気学会全国大会  2020.3 

    　More details

  • 鉄道用非接触給電システムに向けた高温超電導コイルの低損失化

    井上良太, 五十嵐健太, 一條裕貴, 長﨑陽, 津田理, 松木英敏, 宮城大輔

    電気学会 金属・セラミックス/超電導機器合同研究会  2019.12 

    　More details

  • HTS Coil Structure Suitable for High-Power Transmission in a Short-Time in Wireless Power Transmission System for Railway Vehicle

    R. Inoue, K. Igarashi, Y. Nagasaki, D. Miyagi, M. Tsuda

    26th International Conference on Magnet Technology Conference  2019.9 

    　More details

  • 高温超電導コイルを用いた鉄道用非接触給電システムの概念設計

    井上良太, 五十嵐健太, 長﨑陽, 津田理, 松木英敏, 宮城大輔

    2019年 電気学会 産業応用部門大会  2019.8 

    　More details

  • 共振電圧を低減する電圧分散型オープンコイルの基礎的検討

    五十嵐健太, 井上良太, 長﨑陽, 津田理, 宮城大輔

    平成30年度電気関係学会東北支部連合大会  2019.8 

    　More details

  • 高温超電導コイルを用いた鉄道用非接触給電システムの電力伝送効率

    井上良太, 五十嵐健太, 長﨑陽, 宮城大輔, 津田理, 松木英敏

    平成31年 電気学会全国大会  2019.3 

    　More details

  • 高温超電導コイルを用いた鉄道用非接触給電システムの低周波領域における電力伝送特性

    井上良太, 五十嵐健太, 長﨑陽, 宮城大輔, 津田理, 松木英敏

    2018 年度秋季（第97回）低温工学・超電導学会  2018.11 

    　More details

  • AC Loss Reduction of REBCO Coil for Wireless Power Transmission System

    R. Inoue, K. Igarashi, D. Miyagi, M. Tsuda, H. Matsuki

    Applied Superconductivity Conference 2018  2018.10 

    　More details

  • 非接触給電システムに適した高温超電導コイルのコイル形状に関する一検討

    井上良太, 五十嵐健太, 宮城大輔, 津田理, 松木英敏

    2018 年度春季（第96回）低温工学・超電導学会  2018.5 

    　More details

  • kHz帯における垂直磁場下の安定化層がGdBCO線材の交流損失に与える影響

    井上良太, 宮城大輔, 津田理, 松木英敏

    2017 年度秋季（第95回）低温工学・超電導学会  2017.11 

    　More details

  • 高温超電導コイルを用いた低周波用非接触給電システムにおける電力伝送特性の基礎的検討

    井上良太, 宮城大輔, 津田理, 松木英敏

    無線電力伝送研究会（WPT）  2017.10 

    　More details

  • Magnetization Loss Characteristics of a Pancake Coil Fabricated by GdBCO Tape in kHz Frequency Band

    R. Inoue, D. Miyagi, M. Tsuda, H. Matsuki

    2017.9 

    　More details

  • 超電導非接触給電に向けたY系高温超電導線材のkHz帯における交流損失特性

    井上良太, 宮城大輔, 津田理, 松木英敏

    2017 年度春季（第94回）低温工学・超電導学会  2017.5 

    　More details

  • 宮城大輔，田村紳，井上良太，津田理，松木英敏

    高温超電導コイルを用いたS, 型非接触給電システムにおける電力伝送効率の基礎的検討

    2017 年度春季（第94回）低温工学・超電導学会  2017.5 

    　More details

  • ワイヤレス電力伝送用HTSダブルパンケーキコイルにおけるkHz帯交流損失の基礎特性

    井上良太, 宮城大輔, 津田理, 松木英敏

    超電導機器研究会・超電導応用ならびに材料関連技術  2017.1 

    　More details

  • AC Loss Characteristics in kHz frequency band of a High Temperature Superconductor Coil for a Wireless Power Transmission System

    R. Inoue, D. Miyagi, M. Tsuda, H. Matsuki

    2016.9 

    　More details

  • 高温超電導非接触給電システムにおける電力伝送特性の負荷依存性

    井上良太, 宮城大輔, 津田理, 松木英敏

    平成28年度電気関係学会東北支部連合大会  2016.8 

    　More details

  • 高温超電導コイルを用いた低周波大容量用非接触給電システムの検討

    井上良太, 宮城大輔, 津田理, 松木英敏

    平成28年電気学会全国大会  2016.3 

    　More details

  • 磁気回路法を用いた高周波多巻線トランスの実用的等価回路

    井上 森平, 井上 良太, 服部 文哉, 石飛 学

    電気学会研究会資料マグネティックス研究会  2016.3 

    　More details

  • 低周波大容量化に向けた超電導非接触給電システムの電力伝送特性

    井上良太, 宮城大輔, 津田理, 松木英敏

    電気学会研究会資料マグネティックス研究会  2016.3 

    　More details

  • Power Transmission Characteristics of a Magnetic Resonance type Wireless Power Transmission System using Bi2223 Double-Pancake Coils

    R. Inoue, K. Nara, D. Miyagi, M. Tsuda, H. Matsuki

    24th International Conference on Magnet Technology Conference  2015.10 

    　More details

  • 高周波多巻線トランスの実用的等価回路とその変換理論

    井上 良太, 石飛 学

    第206回パワーエレクトロニクス学会定例研究会  2014.12 

    　More details

  • スピン衛星用自立協調電源システムにおける一検討

    井上 良太, 石飛 学

    第196回パワーエレクトロニクス学会定例研究会  2012.12 

    　More details

▼display all

Awards

  • パワーアカデミー萌芽研究優秀賞

    2024.3   パワーアカデミー事務局   "超電導および並列銅コイルを用いた船舶向け非接触給電システムの基礎研究"

    米田 昇平, 井上 良太, 石飛 学

    　More details

  • パワーアカデミー萌芽研究優秀賞

    2022.3   パワーアカデミー事務局   "高周波かつ大容量な非接触給電システムに向けた電圧分散型オープンコイルの基礎研究"

    井上良太,宮城大輔

    　More details

  • Outstanding Presentation Awards

    2021.11   27th International Conference on MAGNET TECHNOLOGY   "Study on Low Loss Coil Structure for High Energy Density of a Wireless Power Transmission System Using High Temperature Superconducting Coils for Railway Vehicle"

    　More details

  • 2021年度優良発表賞

    2021.5   公益社団法人 低温工学・超電導学会   "HTSコイルを用いた鉄道用非接触給電システムの熱的安定性を考慮した運転条件の検討"

    　More details

  • 若手優秀発表賞

    2019.12   電気学会 金属・セラミックス/超電導機器合同研究会   "鉄道用非接触給電システムに向けた高温超電導コイルの低損失化"

    　More details

  • 電気学会優秀論文発表賞

    2017.3   平成28年度電気関係学会東北支部連合大会   "高温超電導非接触給電システムにおける電力伝送特性の負荷依存性"

    　More details

  • 電気学会優秀論文発表賞

    2017.3   平成28年電気学会全国大会   "高温超電導コイルを用いた低周波大容量用非接触給電システムの検討"

    　More details

  • マグネティックス技術委員会研究奨励賞

    2017.1   基礎・材料・共通部門 マグネティックス研究会   "低周波大容量化に向けた超電導非接触給電システムの電力伝送特性"

    　More details

  • 若手幹事特別功労賞

    2013.12   パワーエレクトロニクス学会  

    　More details

  • パワーエレクトロニクス学会若手幹事功労賞

    2013.4   パワーエレクトロニクス学会  

    　More details

  • パワーエレクトロニクス学会優秀賞

    2012.12   パワーエレクトロニクス学会   "スピン衛星用自立協調電源システムにおける一検討"

    　More details

▼display all

Research Projects

  • 伝導冷却超電導コイルを用いた電気自動車向け大容量非接触給電システムの開発

    2024.06 - 2025.02

    特別電源所在県科学技術振興事業における大学等委託研究事業 特別電源所在県科学技術振興事業補助事業 

    金 錫範, 植田 浩史, 井上 良太

    　 More details

    Authorship：Coinvestigator(s) 

    researchmap

  • 高温超電導線材を用いた交流用大容量撚り線導体の開発

    2024.04 - 2026.03

    中国電力技術研究財団  試験研究 (A) 

    井上良太

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 極低温環境下における超電導非接触給電システム向け軟磁性材料の磁気特性評価

    2024.04 - 2025.03

    公益財団法人天野工業技術研究所  2024年度 研究助成金（前期募集） 

    井上良太

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 電気自動車用の600kW級非接触給電システム開発の研究

    2023.06 - 2024.02

    特別電源所在県科学技術振興事業における大学等委託研究事業 特別電源所在県科学技術振興事業補助事業 

    金 錫範, 植田 浩史, 井上 良太

    　 More details

  • 大容量かつ高効率な非接触給電システムのための電圧分散型オープンコイルの提案

    Grant number：23H01390  2023.04 - 2026.03

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    宮城 大輔, 小林 宏泰, 井上 良太

    　 More details

    Authorship：Coinvestigator(s) 

    Grant amount：\18980000 （ Direct expense: \14600000 、 Indirect expense：\4380000 ）

    researchmap

  • 超電導および並列銅コイルを用いた船舶向け非接触給電システムの基礎研究

    2023.02 - 2024.03

    2022年度 パワーアカデミー研究助成 萌芽研究 

    米田 昇平, 井上 良太, 石飛 学

    　 More details

    Authorship：Coinvestigator(s) 

    researchmap

  • 超急速充電を実現する高温超電導コイルを用いた鉄道用非接触給電システムの開発

    2022.09

    国立研究開発法人新エネルギー・産業技術総合開発機構  官民による若手研究者発掘支援事業（第4回）／マッチングサポートフェーズ 

    井上良太

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 地上側コイルの超電導化によるEV用大容量急速非接触給電装置開発の研究

    2022.06 - 2023.02

    特別電源所在県科学技術振興事業における大学等委託研究事業  特別電源所在県科学技術振興事業補助事業 

    金 錫範, 植田 浩史, 井上 良太

    　 More details

    Authorship：Coinvestigator(s) 

    researchmap

  • 大容量非接触給電システムを実現する完全保護機能を有した交流超電導コイルの開発

    Grant number：22K14243  2022.04 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

    井上 良太

    　 More details

    Authorship：Principal investigator 

    Grant amount：\4550000 （ Direct expense: \3500000 、 Indirect expense：\1050000 ）

    researchmap

  • 非接触給電を応用した高温超電導ケーブルの終端接続部における非接触化に関する研究

    2021.04 - 2022.03

    公益財団法人東電記念財団  一般研究 

    井上良太

    　 More details

    Authorship：Principal investigator  Grant type：Competitive

    Grant amount：\1000000

    researchmap

  • 高周波かつ大容量な非接触給電システムに向けた電圧分散型オープンコイルの基礎研究

    2021.02 - 2022.03

    2020年度 パワーアカデミー研究助成  萌芽研究 

    井上良太,宮城大輔

    　 More details

    Authorship：Principal investigator  Grant type：Competitive

    Grant amount：\1200000

    researchmap

  • Study on the wireless power transmission system for the railway vehicles using the high-temperature superconducting coils with thermal stability

    Grant number：20K22414  2020.09 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Research Activity Start-up

    Inoue Ryota

    　 More details

    Grant amount：\2860000 （ Direct expense: \2200000 、 Indirect expense：\660000 ）

    In order to design the WPT system using the HTS coil with thermal stability, we analyzed the frequency characteristics of the critical current in the HTS coil above 1 kHz using FEM analysis, and investigated the operating conditions considering thermal stability in the WPT system using HTS coil for the railway vehicles. As a result, we found that the thermally stable WPT system using the HTS coil for the railway vehicle capable of fast charging can be realized by operating current at the frequency of about 2 kHz. Also, the receiving power density of the WPT system for the railway vehicles was improved by the HTS coil structures using the narrow REBCO wires.

    researchmap

  • 架線フリー化に向けた鉄道用超電導ワイヤレス電力伝送への挑戦

    Grant number：17J02242  2017.04 - 2020.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows  Grant-in-Aid for JSPS Fellows

    井上 良太

    　 More details

    Grant amount：\2800000 （ Direct expense: \2800000 ）

    近年，蓄電池技術の進歩に伴い，架線のフリー化を目指して，鉄道用非接触給電システムの導入が期待されている。その一方，既存のシステムは，数100 kW級の電力を10 kHz程度で伝送するため，1次側および2次側コイルの発熱およびレール等に発生する渦電流損によって伝送効率が低下することが問題となっている。これらを解決する方法としては，動作周波数の低周波化が考えられるが，銅コイルを用いる場合は，低周波化するほど伝送効率の指標であるＱ値が低下するため，コイル自身の発熱を抑えて大電力伝送を行うことが難しい。そこで，本年度は，低周波領域（数kHz以下）においてもQ値の低下が少ない高温超電導（HTS）コイルを鉄道用非接触給電システムに適用することを考え，低周波領域における電力伝送特性について検討した。具体的には，鉄道用非接触給電システムにHTSコイルを適用する場合の有効性を評価するため，銅コイルを用いた既存システムの実験結果とHTSコイルを適用する場合の解析結果を比較することにした。1.2 m×0.8 mの空間に約40 kWを給電する場合のHTSコイルの伝送効率は，冷凍機の運転温度に関わらず，90%以上となり，銅コイルの場合よりもコイル自身の発熱を抑制できることがわかった。また，HTSコイルを用いる場合は，動作周波数を既存システムの約10分の1程度に低減できるため，レール等に発生する渦電流損や変換器に発生するスイッチング損失を低減できると考えられる。その一方で，冷凍機の消費電力を含めた効率は，銅コイルを用いる場合の伝送効率よりも低くなることが確認された。このため，HTSコイルに発生する交流損失を低減する必要があることがわかった。

    researchmap

▼display all

 

Class subject in charge

  • Electrical and Electronic Engineering Experiments A （2024academic year） 3rd and 4th semester  - 水3～7

  • Communication and Network Engineering Experiments A （2024academic year） 3rd and 4th semester  - 水3～7

  • Technical English B1 （2024academic year） Third semester  - 水7～8

  • Technical English II （2024academic year） Third semester  - 水7～8

  • Advanced Study （2024academic year） Other  - その他

  • Technical Writing（Electronic Engineering） （2024academic year） Prophase  - その他

  • Technical Presentation（Electronic Engineering） （2024academic year） Late  - その他

  • Technical Writing （2024academic year） Prophase  - その他

  • Technical Presentation （2024academic year） Late  - その他

  • Electrical power and Motor Experiments （2024academic year） Summer concentration  - その他

  • Specific Research of Electronics and Information Systems Engineering （2024academic year） Year-round  - その他

  • Electrical and Communication Engineering Lab A （2024academic year） 1st-4th semester  - その他

  • Electrical and Communication Engineering Lab C （2024academic year） 3rd and 4th semester  - その他

  • Electrical and Electronic Engineering Experiments A （2023academic year） 3rd and 4th semester  - 水3～7

  • Communication and Network Engineering Experiments A （2023academic year） 3rd and 4th semester  - 水3～7

  • Technical English B1 （2023academic year） Third semester  - その他

  • Technical English II （2023academic year） 3rd and 4th semester  - その他

  • Advanced Study （2023academic year） Other  - その他

  • Technical Writing（Electronic Engineering） （2023academic year） Prophase  - その他

  • Technical Presentation（Electronic Engineering） （2023academic year） Late  - その他

  • Technical Writing （2023academic year） Prophase  - その他

  • Technical Presentation （2023academic year） Late  - その他

  • Electrical power and Motor Experiments （2023academic year） Summer concentration  - その他

  • Specific Research of Electronics and Information Systems Engineering （2023academic year） Year-round  - その他

  • Electrical and Communication Engineering Lab A （2023academic year） 1st-4th semester  - その他

  • Electrical and Communication Engineering Lab C （2023academic year） 3rd and 4th semester  - その他

  • Electrical and Electronic Engineering Experiments A （2022academic year） 3rd and 4th semester  - 水2～6

  • Communication and Network Engineering Experiments A （2022academic year） 3rd and 4th semester  - 水2～6

  • Graduation Thesis （2022academic year） special  - その他

  • Technical Writing （2022academic year） Prophase  - その他

  • Technical Presentation （2022academic year） Late  - その他

  • Specific Research of Electronics and Information Systems Engineering （2022academic year） Year-round  - その他

  • Topics in Electronic and Information Systems Engineering （2022academic year） Prophase  - 金1,金2

  • Electrical and Communication Engineering Lab A （2022academic year） 1st and 2nd semester  - その他

  • Electrical and Communication Engineering Lab C （2022academic year） 3rd and 4th semester  - 火3～7

  • Graduation Thesis （2021academic year） special  - その他

  • Technical Writing （2021academic year） Prophase  - その他

  • Technical Presentation （2021academic year） Late  - その他

  • Specific Research of Electronics and Information Systems Engineering （2021academic year） Year-round  - その他

  • Topics in Electronic and Information Systems Engineering （2021academic year） Prophase  - 金1,金2

  • Electrical and Communication Engineering Lab A （2021academic year） 1st and 2nd semester  - 水2,水3,水4,水5,水6

  • Electrical and Communication Engineering Lab C （2021academic year） 3rd and 4th semester  - 火3,火4,火5,火6,火7

  • Experiments in Electrical and Electronic Engineering III （2021academic year） 3rd and 4th semester  - 火3,火4,火5,火6,火7

  • 特別研究 （2020academic year） 冬季集中  - その他

  • Graduation Thesis （2020academic year） special  - その他

  • Communication Network Engineering Lab II （2020academic year） 3rd and 4th semester  - 火3,火4,火5,火6,火7

  • Electrical and Communication Engineering Lab A （2020academic year） 1st and 2nd semester  - 水2,水3,水4,水5,水6

  • Electrical and Communication Engineering Lab C （2020academic year） 3rd and 4th semester  - 火3,火4,火5,火6,火7

  • Electrical and Communication Engineering Lab III （2020academic year） 3rd and 4th semester  - 火3,火4,火5,火6,火7

  • Electrical and Communication Engineering Lab I （2020academic year） 1st and 2nd semester  - 水2,水3,水4,水5,水6

▼display all

 

Social Activities

  • アプライドHPC導入インタビュー

    Role(s)：Interviewer

    https://bto.applied.ne.jp/hpc_case_study_53.html  2024.8.9

    　More details

    Type：Internet

    researchmap

  • パワーアカデミー研究助成 2020年度採択者インタビュー

    Role(s)：Interviewer

    パワーアカデミー事務局  https://www.power-academy.jp/future/rg/rg2020/rg00300.html  2023.8.17

    　More details

    Type：Internet

    researchmap

  • 技術の森 - 朝耳らじおGoGo

    Role(s)：Appearance

    RSKラジオ  2022.9.21

    　More details

  • 技術の森 - 朝耳らじおGoGo

    Role(s)：Appearance

    RSKラジオ  2022.9.14

    　More details

  • 技術の森 - 朝耳らじおGoGo

    Role(s)：Appearance

    RSKラジオ  2022.1.19

    　More details

  • 朝耳らじお55(GOGO)

    Role(s)：Appearance

    RSKラジオ  2020.7.15

    　More details

▼display all