研究者詳細 - 今井　純

論文 - 今井　純

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出射治, 今井純, 高橋明子, 竹本真紹

計測自動制御学会論文集 57 ( 5 ) 260 - 266 2021年5月

Impact of SMC Property on Axial Flux Machine Employing Ferrite PM in Traction Applications 査読

Ren Tsunata, Masatsugu Takemoto, Jun Imai, Tatsuya Saito, Tomoyuki Ueno

2024 International Conference on Electrical Machines (ICEM) 1 - 7 2024年9月

Superior Efficiency Under PWM Harmonic Current in an Axial-Flux PM Machine for HEV/EV Traction: Comparison With a Radial-Flux PM Machine 査読

Ren Tsunata, Masatsugu Takemoto, Jun Imai, Tatsuya Saito, Tomoyuki Ueno

IEEE Transactions on Industry Applications 60 ( 5 ) 6736 - 6751 2024年9月

Designing and Prototyping an Axial-Flux Machine Using Ferrite PM and Round Wire for Traction Applications: Comparison With a Radial-Flux Machine Using Nd-Fe-B PM and Rectangular Wire 査読

Ren Tsunata, Kosuke Izumiya, Masatsugu Takemoto, Jun Imai, Tatsuya Saito, Tomoyuki Ueno

IEEE Transactions on Industry Applications 60 ( 3 ) 3934 - 3949 2024年5月

Proposal of a Novel Air-Gap Structure for Magnet-Less 3-Axis Active Control-Type Magnetic Bearing with Cylindrical Rotor: Reducing Axial Length of Turbomachinery System

Yuto Sho, Masatsugu Takemoto, Ren Tsunata, Jun Imai

2023 IEEE International Future Energy Electronics Conference (IFEEC) 114 - 119 2023年11月

Design and Analysis of Hybrid-Excitation Variable Flux Memory Motor for Traction Applications: Improving Output Power in High-Speed Area During Six-Step Operation Mode 査読

Ren Tsunata, Keito Yokomichi, Masatsugu Takemoto, Jun Imai

IEEE Access 11 82024 - 82036 2023年

A Proposal of an Axial-Flux Permanent-Magnet Machine Employing SMC Core With Tooth-Tips Constructed by One-Pressing Process: Improving Torque and Manufacturability 査読

Ren Tsunata, Masatsugu Takemoto, Jun Imai, Tatsuya Saito, Tomoyuki Ueno

IEEE Access 11 109435 - 109447 2023年

On loop-shaping controller synthesis for a flexible slewing arm with tip accelerometer 査読

J. Imai, K. Inoue, M. Takemoto

Proceeding of the 13th Asian Control Conference (ASCC 2022) 1262 - 1263 2022年5月

回転型柔軟アームの先端加速度による時間遅延を補償した振動抑制

西岡由恭, 大内凌華, 今井純, 高橋明子, 舩曳繁之

計測自動制御学会論文集 56 ( 2 ) 70 - 72 2020年2月

Vibration control of a flexible slewing arm with a tip accelerometer 査読

J.Imai, Y. Nishioka, O. Idei, A.Takahashi, S.Funabiki

Proceeding of the 19th International Conference on Control, Automation and Systems (ICCAS 2019) 911 - 915 2019年10月

Evaluation of Simple Adaptive Control for Parameter Variation of Magnetic Levitation System 査読

K. Kimura, J. Imai, A. Takahashi, S. Funabiki

Proceeding of the 19th International Conference on Control, Automation and Systems (ICCAS 2019) 605 - 606 2019年10月

2-DOF IMC with the Tip Acceleration Feedback for a Flexible Arm 査読

O. Idei, J. Imai, A. Takahashi, S. Funabiki

Proceeding of the 19th International Conference on Control, Automation and Systems (ICCAS 2019) 607 - 608 2019年10月

Transparency Evaluation of Passivity Based Bilateral Control Systems without Force Sensor," 査読

K. Uehara, J. Imai, A. Takahashi, S. Funabiki

Proceeding of the 19th International Conference on Control, Automation and Systems (ICCAS 2019) 1195 - 1196 2019年10月

Modeling for Non-collocated Control of a Flexible Slewing Arm 査読

J. Imai, Y. Nishioka, O. Idei, A. Takahashi, S. Funabiki

Proceedings of the SICE Annual Conference 2019 (SICE 2019) 469 - 472 2019年9月

Measuring Method for Solar Irradiance at Multi-points with Different Color Based on Image Analysis

Kento Kawakami, Akiko Takahashi, Jun Imai, Shigeyuki Funabiki

2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 2543 - 2548 2018年12月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Institute of Electrical and Electronics Engineers Inc.

In recent years, the introduction of PV (photovoltaic generation) systems has been rapidly expanding to realize a sustainable society. In order to deal with the deterioration of power quality that could occur when a large amount of PV systems is installed, it is necessary to predict the PV power based on the solar irradiance and to select and install system stabilizing devices. Therefore, measuring methods for the solar irradiance by image analysis have been proposed. This paper proposes a measuring method for the solar irradiance at multi-points with different color based image analysis. The proposed method creates estimation models at only an arbitrary point. Then, color values at other points to be measured are extracted and correction values are calculated. By applying correction values to existing estimation models, the solar irradiance at multi-points are measured. The proposed method measured the solar irradiance at the light blue roof, the orange roof and the PV panel points in the image from Nov. 1, 2014 to Nov. 30, 2014. As a result, mean absolute errors between measured values of solar irradiance using a pyranometer and the proposed method at these points were 0.093 kW/m2, 0.093 kW/m2, 0.086 kW/m2, respectively. These were decreased by 58%, 51%, and 45% compared those with using the estimation models without applying correction values, respectively.

DOI： 10.1109/ECCE.2018.8557773

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既約分解にもとづく構造的平衡実現によるコントローラ低次元化査読

能宗克行, 今井純, 高橋明子, 舩曳繁之

電気学会論文誌Ｃ（電子・情報・システム部門誌） 138 ( 3 ) 263 - 268 2018年3月

A voltage control method using EVs in the power distribution system including a mass of PVs

Akiko Takahashi, Naoki Matsumoto, Jun Imai, Shigeyuki Funabiki

Proceedings of the International Conference on Power Electronics and Drive Systems 2017- 507 - 510 2018年2月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Institute of Electrical and Electronics Engineers Inc.

This paper proposes a method to control the distribution line voltage utilizing EVs which are connected to the power distribution system. The proposed method adjusts the amount of charge or discharge power of EVs cooperative with PCSs. As a result, the distribution line voltage was maintained within the specified voltage range and the PV opportunity loss was reduced 30.3 points compared with the P control of PCSs. This paper clarifies that EVs are useful as the equipment for maintaining the voltage in the power distribution system.

DOI： 10.1109/PEDS.2017.8289153

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On Mixed Galerkin Modeling for Controller Design of Boundary Control Systems

Jun Imai, Katsuyuki Noso, Akiko Takahashi, Shigeyuki Funabiki

IFAC-PapersOnLine 50 ( 1 ) 7133 - 7138 2017年7月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Elsevier B.V.

A mixed Galerkin formulation for reduced-order modeling is presented for controller design of distributed parameter systems with boundary inputs. A null space approach is established to yield appropriate trial and test functions by using candidate trial functions which are free from boundary conditions. The approach is applicable, with considerably mild conditions on the candidate trial functions, on the interior domain as well as its boundaries. It is shown that this modeling technique yields a finite dimensional descriptor system of index 1, that is equivalent to a state-space representation suitable for controller design model. Effectiveness of the proposed method is demonstrated by an example of a heat conduction rod using polynomial functions which are not preprocessed to meet the boundary conditions.

DOI： 10.1016/j.ifacol.2017.08.549

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A State-Space Modeling via the Galerkin Approximation for a Boundary Control System

Jun Imai, Katsuyuki Noso, Akiko Takahashi, Shigeyuki Funabiki

IFAC-PapersOnLine 49 ( 8 ) 7 - 12 2016年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Elsevier B.V.

For linear distributed parameter systems with a finite number of boundary inputs, we propose a framework to implement the method of weighted residuals using candidate trial functions without boundary homogenization. Proposed scheme utilizes inner product matrix, or Grammian, of the trial functions to separate appropriate homogenized basis functions and the other trial functions matching inhomogeneous boundary conditions. The finite-dimensional approximate model by using the proposed scheme is represented in descriptor form and it is proved to be straightforwardly transformed into state space form. Feasibility of the method is illustrated by a brief controller design example using the approximate model of a heat conduction rod with Dirichlet boundary input.

DOI： 10.1016/j.ifacol.2016.07.410

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A Comparison of Electric Power Smoothing Control Methods for Distributed Generation Systems

Tomoyuki Kanehira, Akiko Takahashi, Jun Imai, Shigeyuki Funabiki

Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) 193 ( 4 ) 49 - 57 2015年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：John Wiley and Sons Inc

Renewable forms of energy such as solar energy have attracted attention as alternative sources of fossil fuel. The output power of photovoltaic generation systems changes steeply. Changes in output power have an effect on the electric power quality of the power system. For that reason, a system which can smooth fluctuations of output power is required. In this paper, the moving average, modified moving average, single exponential smoothing, and double exponential smoothing methods are applied to electric power smoothing control schemes for distributed generation systems with photovoltaic generation. The reduction rate of power fluctuations and the maximum stored energy of electric double layer capacitors are adopted as system evaluation measures. To confirm the effectiveness of the power smoothing control methods, a distributed generation power system with photovoltaic generation systems is simulated with the power electronics circuit simulation software PSIM. The methods are then compared by evaluating the reduction in the capacity of electric double layer capacitors without loss in the power smoothing effect.

DOI： 10.1002/eej.22767

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