研究者詳細 - 平木　英治

論文 - 平木　英治

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Resonant Gate Driver for Normally-On GaN High-Electron-Mobility Transistor

Takaharu Ishibashi, Masayuki Okamoto, Eiji Hiraki, Toshihiko Tanaka, Tamotsu Hashizume, Tetsu Kachi

2013 IEEE ECCE ASIA DOWNUNDER (ECCE ASIA) 365 - 371 2013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：IEEE

Wide bandgap semiconductors, such as silicon carbide (SiC) and gallium nitride (GaN), are promised materials for next-generation power devices. The authors have recently fabricated a GaN-based high-electron-mobility transistor (HEMT), which is a normally-on device, for power electronics application. However, the power consumption in the constructed gate drive circuit increases when the GaN HEMT is used under higher-frequency operation. A new gate drive circuit with lower power consumption for the normally-on GaN HEMT is strongly required. In this paper, a new resonant gate drive circuit, which is most suitable for the newly fabricated GaN HEMT, is proposed. The validity and high practicability of the proposed resonant gate drive circuit are demonstrated by simulation and experimental results.

Experimental Validation of Newly Fabricated Normally-On GaN High-Electron-Mobility Transistor

Takaharu Ishibashi, Masayuki Okamoto, Eiji Hiraki, Toshihiko Tanaka, Tamotsu Hashizume, Daigo Kikuta, Tetsu Kachi

2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 1584 - 1591 2013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：IEEE

Wide bandgap semiconductors such as silicon carbide (SiC) and gallium nitride (GaN) are the promising materials for next-generation power devices. A normally-on GaN-based high-electron-mobility transistor (GaN HEMT) has been fabricated for power electronic converters. In this study, the current collapse phenomena, which are distinctive characteristics of GaN devices, are evaluated in detail under several voltages with two switching frequencies. Prototype circuits for a boost-type dc-dc converter and a single-phase full-bridge inverter, which use the newly fabricated GaN HEMT, are constructed and tested. The experimental results demonstrate that the newly fabricated normally-on GaN HEMT with the previously proposed gate drive circuit is suitable for use as a next-generation power device.

Sepic と Zeta コンバータの特性評価

中本貴之, 廣川貴之, 平木英治, 岡本昌幸, 田中俊彦

パワーエレクトロニクス学会誌 39 188 - 188 2013年

A New Current Control Strategy Based on the Internal Model Principle for a Current Balancer in Single-Phase Three-Wire Distribution Systems

Yusuke Baba, Yuji Wakasa, Eiji Hiraki, Toshihiko Tanaka, Masayuki Okamoto, Seong Ryong Lee

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING 8 S95 - S101 2013年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY

This paper proposes a new current control strategy that is based on the internal model principle for a current balancer in single-phase three-wire distribution systems. The proposed current control strategy includes a sinusoidal reference input model to achieve the zero steady-state error tracking. The appropriate control gains of this control strategy can be systematically determined by using a state-feedback controller design method via linear matrix inequalities. The basic principle of the proposed control strategy is discussed in detail, and then confirmed by digital computer simulation using the PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that zero steady-state error tracking is achieved by the proposed control strategy. Also, balanced source currents are obtained on the secondary side of a pole-mounted distribution transformer while the load conditions are unbalanced. (c) 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

DOI： 10.1002/tee.21924

A Large-Capacity Capacitor Simulator with an Inner-Series Resistor

Okamoto Masayuki, Hiraki Eiji, Tanaka Toshihiko, Tanaka Atsushi

IEEJ Journal of Industry Applications 2 ( 4 ) 204 - 210 2013年

記述言語：英語出版者・発行元：The Institute of Electrical Engineers of Japan

This paper proposes a universal large-capacity capacitor simulator. The proposed simulator consists of a main chemical capacitor and three-leg IGBTs. One leg of the IGBTs acts as a bidirectional dc-dc converter. The other two legs are used for a single-phase PWM rectifier. In the capacitor-charging operation, the bidirectional dc-dc converter is used as a boost converter. Most of the power supplied by the load is supplied to the utility through the single-phase PWM rectifier. In the capacitor-discharging operation, the bidirectional dc-dc converter acts as a buck converter. Most of the power supplied to the load is from the utility through the single-phase PWM rectifier. A new control method, which can perform as an inner-series resistor in a supercapacitor (SC), is also proposed for an SC simulator. The basic principle of the proposed capacitor simulator is discussed in detail. The validity and high applicability of the proposed large-capacity capacitor simulator are confirmed using PSIM software. A prototype experimental model is constructed and tested. The experimental results demonstrate that the proposed capacitor simulator acts both as an ideal large-capacity capacitor and as an SC with an inner-series resistor.

DOI： 10.1541/ieejjia.2.204

その他リンク： https://jlc.jst.go.jp/DN/JALC/10020770012?from=CiNii

A starting method of the harmonic current compensator using a hybrid active filter for wind power generation systems with soft starters

Hiroaki Yamada, Eiji Hiraki, Toshihiko Tanaka

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING 7 S139 - S145 2012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：WILEY

This paper proposes a starting method of the harmonic current compensator using a hybrid active filter for wind power generation systems. The active filter (AF) in the proposed method of the hybrid power filter behaves as a resistor and reactive power compensator to suppress the inrush current and leading currents for the passive filter (PF) under the starting condition. The basic principle of the proposed starting method is discussed, and then confirmed by digital computer simulation using PSCAD/EMTDC. Simulation results demonstrate that the proposed starting method can overcome the inrush and leading currents for the PF, building up the DC capacitor voltage of the AF. IEEJ Trans 2011 DOI: 10.1002/tee.21815

DOI： 10.1002/tee.21815

Topology for Current Balancer with Half-Bridge Inverters in Single-Phase Three-Wire Distribution Systems with DC-Capacitor-Voltage Balancer

Yusuke Baba, Kazuya Sugahara, Masayuki Okamoto, Eiji Hiraki, Toshihiko Tanaka

ELECTRICAL ENGINEERING IN JAPAN 180 ( 4 ) 38 - 46 2012年9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：WILEY-BLACKWELL

This paper proposes a new topology for a current balancer with half-bridge inverters in single-phase three-wire distribution systems. Two half-bridge inverters are connected to the sources. The midpoint of the two capacitors on the DC-side is connected to a neutral line. The two half-bridge inverters function as a current balancer for single-phase three-wire distribution systems by exchanging the active and reactive power on each feeder through the two DC capacitors. The third leg functions as a DC-capacitor-voltage balancer for two DC capacitors connected to the half-bridge inverters. Thus, balanced source voltages and currents are obtained on the secondary side on the pole-mounted distribution transformer with balanced DC-capacitor voltages. The basic principle of the proposed current balancer is discussed in detail, and then confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results show that balanced source voltages and currents are obtained on the secondary side on the pole-mounted distribution transformer with balanced DC-capacitor voltages. (C) 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 180(4): 38-46, 2012; Published online in Wiley Online Library (wileyonlinelibrary. com). DOI 10.1002/eej.22277

DOI： 10.1002/eej.22277

IHクッキングヒータ用時分割制御高周波インバータの小型化に関する検討

廣川貴之, 平木英治, 田中俊彦, 岡本昌幸

電気学会研究会資料. SPC, 半導体電力変換研究会 2012 ( 96 ) 81 - 85 2012年7月

記述言語：日本語出版者・発行元：一般社団法人電子情報通信学会

筆者らは先に2台の1石型高周波インバータを並列接続した回路構成のIHクッキングヒータ用時分割制御高周波インバータを提案し,実証評価を行ってきた.本稿では2台のインバータ内のインダクタを結合させることによる回路の小型化について検討したので報告する.

直流キャパシタ電圧一定制御を用いた単相三線式配電用電流バランサの制御法

馬場雄介, 岡本昌幸, 平木英治, 田中俊彦, LEE Seong Ryong

電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society 132 ( 5 ) 581 - 587 2012年5月

記述言語：日本語出版者・発行元：一般社団法人電気学会

This paper proposes a strategy based on constant dc-capacitor voltage control for a current balancer in single-phase three-wire distribution systems. The proposed control strategy involves the use of only the constant dc-capacitor voltage control block commonly used in active power conditioners for the calculation of the compensation current. No calculation block is required to obtain the reactive and unbalanced-active components. Thus, we provide the simplest possible control strategy for the current balancer. The basic principle of the proposed control method is discussed in detail and its validity, which is confirmed by a digital computer simulation using PSIM software, is shown. A prototype experimental model is constructed and tested. Experimental results demonstrate that balanced source currents with a power factor of unity are obtained on the secondary side of a pole-mounted distribution transformer while unbalanced load current conditions with a lagging power factor are retained.

DOI： 10.1541/ieejias.132.581

A constant DC voltage control-based strategy for an active power quality compensator in electrified railways with improved response

Norio Ishikura, Keisuke Ishibashi, Eiji Hiraki, Toshihiko Tanaka

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING 7 ( 3 ) 316 - 321 2012年5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：WILEY

This paper proposes a constant DC voltage control-based strategy for an active power quality compensator (APQC) used in electrified railways. The proposed strategy consists of only an I-PD-based constant DC capacitor voltage control with an added moving-average type low-pass filter (LPF). The added LPF improves the response of the constant DC capacitor voltage control for the APQC. Thus we offer the simplest control method for the APQC used in electrified railways with improved response. The basic principle of the proposed control strategy is discussed in detail, and then confirmed by digital computer simulation using the PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that balanced source currents with unity power factor are obtained on the primary side of the Scott transformer in the traction substation systems, improving the response by one-fourth as compared to that of the previously proposed control method. (C) 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

DOI： 10.1002/tee.21733

インダクタを結合した構造を有するIHクッキングヒータ用時分割制御高周波インバータの実証評価 (第195回定例研究会)

廣川貴之, 平木英治, 田中俊彦

パワーエレクトロニクス学会誌 38 141 - 148 2012年

記述言語：日本語出版者・発行元：パワーエレクトロニクス学会

This paper represents the practical evaluations of an improved time-sharing high-frequency resonant soft-switching inverter for all metal induction heating (IH) cooking appliances. By introducing inductor coupling technology, the number of the circuit components and a physical volume of the circuit can be reduced. A design procedure of the coupling inductor is discussed in detail. Furthermore, two IH power regulation sequences; phase shifted PWM and PAM are compared to the viewpoint of the power conversion efficiency.

DOI： 10.5416/jipe.38.141

The Practical Evaluations of Time-Sharing High-Frequency Resonant Soft-Switching Inverter for All Metal IH Cooking Appliances

Takayuki Hirokawa, Eiji Hiraki, Toshihiko Tanaka, Masayuki Okamoto, Mutsuo Nakaoka

38TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2012) 3302 - 3307 2012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：IEEE

This paper represents the practical evaluations of time-sharing high-frequency resonant soft-switching inverter composed of two multi-resonant sub inverter cells in parallel for common series resonant load for all metal induction heating (IH) cooking appliances. Together with a fixed switching frequency resonant current, IH power regulation is carried out by phasor angle control scheme with phase-shifted PWM scheme. In particular, this high-frequency multi-resonant inverter can efficiently operate under the conditions of load resonant frequency changing mode; frequency doubler mode (100 kHz) for low resistivity metal IH loads and fundamental switching frequency mode (50 kHz) for high resistivity metal IH loads, respectively. The feasible performance of the time-sharing high-frequencys inverter are demonstrated and discussed in detail.

Performance Analysis for High-Frequency link AC-AC Contact-less Power Supply System in Parking Tower

Shingo Kawano, Eiji Hiraki, Toshihiko Tanaka, Masayuki Okamoto

38TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2012) 645 - 650 2012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：IEEE

In tandem with the penetration of PH V as well as EV, contact-less power supply system in parking towers have become important subjects. In parking towers, EV and PHV are charged on the traveling pallets, supply power is to be transmitted from the building to travelling pallets. In this paper, high-frequency link AC-AC converter for contact-less power supply system in parking tower is newly proposed and its basic operation and performance have been demonstrated from computer aided simulation and experiment.

Smart Charger for Electric Vehicles with Power Quality Compensator on Single-Phase Three-Wire Distribution Feeders

Toshihiko Tanaka, Tsukasa Sekiya, Hidenori Tanaka, Eiji Hiraki, Masayuki Okamoto

2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3075 - 3081 2012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：IEEE

In this paper, we propose a smart charger for electric vehicles (EVs) with a power quality compensator. The proposed smart charger consists of four-leg IGBTs. Three legs are used for a single-phase full-bridge-based PWM rectifier, which converts power from ac to de during the battery-charging operation, or from de to ac during the battery-discharging operation. This PWM rectifier can compensate reactive and unbalanced active currents on single-phase three-wire distribution systems because the third leg is connected to the neutral line of singlephase three-wire distribution feeders. The fourth leg is used as a bidirectional dc-de converter for battery-charging and discharging operations. The three-leg PWM rectifier uses only constant dc-capacitor voltage control, which is commonly used in active power line conditioners. Thus, the authors have developed the simplest possible control method for a single-phase power quality compensator. The basic principle of the proposed smart charger is discussed in detail, and then confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that balanced source currents are obtained on the secondary side of the pole-mounted distribution transformer for battery-charging and discharging operations.

Peak Power Shaving of an Electric Injection Molding Machine with Supercapacitors

Hirofumi Akiyoshi, Eiji Hiraki, Toshihiko Tanaka, Masayuki Okamoto, Tadayoshi Matsuo Eiji Hiraki, Kiyoshi Ochi

2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 2590 - 2595 2012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：IEEE

In this paper, we propose the control method of a peak shaving system for an electric injection molding machine (EIMM). The peak power shaver consists of a multiphase bidirectional dc-dc converter and supercapacitors (SCs), and is connected to a dc link of the inverter fed injection motor drive system of the EIMM. In the proposed control method, electric power is stored in the SCs through the multiphase bidirectional dc-dc converter with a PWM rectifier while the injection motor is at rest. When the injection motor is accelerating, the stored power in the SCs together with the power from the distribution feeders is supplied to the injection motor. Thus, the peak power can be shaved. The basic principle of the proposed control method is discussed in detail, then confirmed by digital computer simulation and experimental setup. The simulation and experimental results demonstrate that the peak power is shaved by 70% using the peak power shaving system.

High Frequency-link AC-AC Wire-less Power Supply System in Parking Tower

Eiji Hiraki, Shingo Kawano, Toshihiko Tanaka, Masayuki Okamoto

2012 15TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (EPE/PEMC) 2012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：IEEE

In tandem with the penetration of PHV as well as EV, wire-less power supply system in parking towers have become important subjects. In parking towers, EV and PHV are charged on the traveling pallets, supply power is to be transmitted from the building to travelling pallets. In this paper, high frequency link AC-AC converter for non-contact power supply system in parking tower is newly proposed and its basic operation performance have been demonstrated from computer aided simulation and experiment.

直流電圧平衡化回路を有するハーフブリッジインバータを用いた単相三線式配電用電流バランサ

馬場雄介, 菅原和也, 岡本昌幸, 平木英治, 田中俊彦

電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society 131 ( 7 ) 880 - 887 2011年7月

記述言語：日本語出版者・発行元：一般社団法人電気学会

This paper proposes a new topology for a current balancer with half-bridge inverters in single-phase three-wire distribution systems with a three-leg inverter. Two half-bridge inverters are connected to the sources. The midpoint of two capacitors on the DC-side is connected to a neutral line. The two half-bridge inverters perform a current balancer for single-phase three-wire distribution systems by exchanging the active and reactive power on the each feeder through the two DC-capacitors. The third-leg performs a DC-capacitor-voltage balancer for the two DC-capacitors connected to the half-bridge inverters. Thus, balanced source voltages and currents are obtained on the secondary-side on the pole-mounted distribution transformer with balanced DC-capacitor voltages. The basic principle of the proposed current balancer is discussed in detail, and then, confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results show that balanced source voltages and currents are obtained on the secondary-side on the pole-mounted distribution transformer with balanced DC-capacitor voltages.

DOI： 10.1541/ieejias.131.880

A Large-Capacity Capacitor Simulator with an Inner-Series Resistor

Toshihiko Tanaka, Atsushi Tanaka, Masayuki Okamoto, Eiji Hiraki

IECON 2011: 37TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY 1052 - 1057 2011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：IEEE

This paper proposes a universal large-capacity capacitor simulator. The proposed simulator consists of a main electrolytic capacitor and three-leg IGBTs. One leg of the IGBTs acts as a bidirectional dc-dc converter. The other two legs are used for a single-phase PWM rectifier. In the capacitor-charging operation, the bidirectional dc-dc converter is used as a boost converter. Most of the power supplied by the load is injected to the utility through the single-phase PWM rectifier. In the capacitor discharging-operation, the bidirectional dc-dc converter acts as a buck converter. Most of the power supplied to the load is from the utility through the single-phase PWM rectifier. A new control method, which can perform an inner-series resistor in a supercapacitor (SC), is also proposed for an SC simulator. The basic principle of the proposed capacitor simulator is discussed in detail. The validity and high applicability of the proposed large-capacity capacitor simulator are confirmed using PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that the proposed capacitor simulator acts both as an ideal large-capacity capacitor and as an SC with an inner-series resistor.

GaNデバイス用高速ドライブ回路の開発

石橋卓治, 岡本昌幸, 平木英治, 田中俊彦, 橋詰保, 橋詰保, 加地徹, 加地徹

電気・情報関連学会中国支部連合大会講演論文集(CD-ROM) 62nd 2011年

A Novel Type Time-Sharing High-Frequency Resonant Soft-Switching Inverter for All Metal IH Cooking Appliances

Takayuki Hirokawa, Masayuki Okamoto, Eiji Hiraki, Toshihiko Tanaka, Mutsuo Nakaoka

IECON 2011: 37TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY 2526 - 2532 2011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：IEEE

In this paper, a novel type time-sharing high-frequency resonant soft-switching inverter composed of combining two-phase multi-resonant sub inverter cells in parallel for common series resonant tank load is demonstrated originally for all metal induction heating cooking appliances, together with a fixed output frequency resonant current phasor angle control scheme by phase-shifted PWM which is suitable for high frequency power regulation. In particular, this high-frequency multiresonant inverter with lossless snubbing capacitors for ZVS can efficiently operate under the conditions of load resonant frequency changing mode; frequency doubler mode(100kHz) and switching frequency mode(50kHz) for low resistivity metal IH and high resistivity metal IH loads, respectively. The feasible operating performances of experimental setup implementation are evaluated and discussed in detail. The practical effectiveness of this high frequency resonant inverter is confirmed for all metal IH cooking appliances on the basis of simulation and experimental results.

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