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1997 Fiscal Year Final Research Report Summary

Study on Electro Magnetic Interference in Power Electronics

Research Project

Project/Area Number 07650340
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionTOKYO METROPOLITAN UNIVERSITY

Principal Investigator

SHIMIZU Toshihisa  Tokyo Metropolitan University, Faculty of Engineering, Associate Professor, 工学研究科, 助教授 (30254155)

Co-Investigator(Kenkyū-buntansha) OHSATO Masato  Tokyo Metropolitan University, Faculty of Engineering, Research Associate, 工学研究科, 助手 (30209233)
TUCHIYA Junichi  Tokyo Metropolitan University, Faculty of Engineering, Research Associate, 工学研究科, 助手 (70155406)
KIMURA Gunji  Tokyo Metropolitan University, Faculty of Engineering, Professor, 工学研究科, 教授 (10087215)
Project Period (FY) 1995 – 1997
KeywordsHigh Frequency Leakage Current / Electro Magnetic Interference / Inverter / EMI
Research Abstract

In this research, prediction of the circuit components which affect EMI such as high frequency leakage current and radiation noise, analysis of the mechanism of EMI troubles, and suppression technique of EMI are studied.
The results are as follows,
1.Prediction of the circuit components.
(1) Parasitic capacitance existing in the power transistor modules : It is proofed that the parasitic capacitance existing in the power transistor modules cause the high frequency leakage currents. Through the investigation of the relation between the parasitic capacitance and the leakage currents, effective technique for suppressing the leakage current is proposed. From experiment by using a experimental set-up and simulation, the effectiveness is proofed.
(2) Parasitic capacitance existing in the batteries : In case that the batteries are connected to the DC-bus in the converter is investigated, and found out that a lot of high frequency leakage current was flowing trough the parasitic capacitance existi … More ng in the battery. The equivalent circuit focused on the leakage current is carried out, and the suppression scheme by using the common mode voltage suppression circuit, described in 2 chapter on this abstract, is proposed.
(3) The other components : With regard to the circuit components such as filter reactor and parasitic inductance existing in the DC-bus line, very important operating characteristics affecting EMI trouble are pointed out.
2.Suppression technique for high frequency leakage current :
(1) Common mode voltage suppression method : In the conventional scheme for reducing high frequency leakage currents, common mode reactors are connected to three phase AC lines in series. However, in this method, it is difficult to apply it to large current systems. In this study, a novel common mode current reduction technique by connecting a common mode voltage suppression circuit to the inverter/converter circuit in series is proposed. The optimum circuit condition of the suppression circuit is carried out and the effectiveness is proofed from the experimental and simulation results.
(2) Soft switching and DC common mode reactor method : In this method, making the switching transient waves on the main switch soft in addition to inserting a DC common mode reactor for suppressing the high frequency leakage current is studied. The consideration of the optimum circuit parameter and the suppression effect is done.
3.Suppression technique for high frequency radiation noise :
(1) As a result of high speed switching of the switching devices, high frequency radiation noise is caused. Owing to this study, it is clarified that the origin of the radiation noise is the high frequency resonant current flowing through the DC-bus capacitor and the switching devices. The equivalent circuit for the radiation noise is estimated and proofed it. Furthermore, the effective technique for suppressing the radiation noise is proposed and proofed its effectiveness from the experimental and simulation results. Less

  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] Toshihisa Shimizu: "Analysis of the High Frequency Leakage Current Caused by Parasitic Capacitor of the Power transistor Module." IEE of Japan,Proceedings of IPEC-YOKOHAMA. Vol.1. 217-222 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Toshihisa Shimizu: "High Frequency Leakage Current Reduction Based on a Common-Mode Voltage Compensation Circuit." IEEE,Proceedings of PESC'96. Vol.2. 1961-1967 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Junbo Hu: "High Frequency Leakage Current Reduction Based on a Common-Mode Voltage Compensation Circuit." IEEE & IEE of Japan,Proceedings of ICEE. Vol.1. 125-129 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 清水 敏久: "トランジスタモジュールの浮遊静電容量に起因する高周波漏洩電流の解析とその抑制法" 電気学会論文誌D分冊. Vol.116-D No.7. 758-766 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Toshihisa Shimizu: "Anakysis and Suppression of High-Frequency Leakage Current Attribute to the Parasitic Capacitor of a Transistor Modules." Scripta Thecnica,Inc(John Wiley & Sons),Electrical Engineering in Japan. Vol.119 No.2. 60-71 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 五十嵐 征輝: "電力変換装置から放射される電磁ノイズの解析と低減方法" 電気学会論文誌D分冊. Vol.118-D No.6(掲載決定). (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 清水 敏久: "トランジスタモジュールの浮遊静電容量に起因する高周波漏洩電流" 電気学会半導体電力変換研究会資料. SPC-94-88. 37-47 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 清水 敏久: "交流中性点電位変動の抑制による高周波漏洩電流の低減法" 電気学会半導体電力変換研究会資料. SPC-95-31. 33-41 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 出原 和英: "フィルタリアクトルの周波数特性と高周波漏洩電流に関する研究" 平成8年電気学会全国大会講演論文集. Vol.4. 4〜90- (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 胡 俊波: "インバータ直流部の配線インダクタンスに生じるサージ電圧と交流中性点電圧" 平成8年電気学会産業応用部門全国大会講演論文集. T〜34- (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 胡 俊波: "高周波漏洩電流抑制回路の回路パラメータの検討" 平成9年電気学会全国大会講演論文集. Vol.4. 4〜128- (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 胡 俊波: "蓄電池の浮遊静電容量に起因する高周波漏洩電流とその抑制法" 電気学会半導体電力変換研究会資料. SPC-98-44. 69-74 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 五十嵐 征輝: "電力変換装置から放射される電磁ノイズの解析と低減方法" 電気学会変動体電力変換研究会資料. SPC-97-72. 19-24 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 西村 欣剛: "ソフトスイッチング回路と三巻線トランスを用いたコモンモード電流抑制方式" 平成10年電気学会全国大会講演論文集. No.813- (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Toshihisa SHIMIZU: "Analysis of the High Frequency Leakage Current Caused by Parastic Capacitor Parastic Capacitor of the Power Transistor Modules" Proceedings of the 1995 International Power Electronics Conference (IPEC-Yokohama'95). Vol.1. 217-222 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toshihisa SHIMIZU: "High Frequency Leakage Current Reduction Based on Common Mode Voltage Compensation Circuit" Papers of Technical Meeting on Semiconductor Power Conversion, IEE of Japan. SPC-95-31. 33-42 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kazuhide DEHARA: "Frequency Characteristics of Reactor and High Frequency Leakage Current" 1996 National Convention Record of IEE Japan. No.840. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toshihisa SHIMIZU: "High Frequency Leakage Current Reduction Based on a Common-Mode Voltage Compensation Circuit" Proceedings of the IEEE Power Electronics Specialists Conference (PESC'96). Vol.2. 1961-1967 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toshihisa SHIMIZU: "High Frequency Leakage Current Caused by the Transistor Module and its Suppression Technique" Transaction of IEE Japan. Vol.116-D,No.7. 758-766 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Junbo HU: "High Frequency Leakage Current Reduction Based on Common-mode Voltage Copensation Circuit" Proceedings of the International Conference on Electricl Engineering (ICEE'96). Vol.1. 125-129 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Junbo HU: "A Study of Neutral Voltage on AC Output and Surge Voltage on Inductance of DC Line at Inverter Circuit" 1996 National Convention Record of IEE Japan -Industry Application Society-. No.T-34. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Junbo HU: "Research of Circuit Parameter of High Frequency Leakage Current Reduction Circuit" 1997 National Convention Record of IEE Japan. No.861. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Seiki IGARASHI: "Analysis and reduction Methods of EMI Radiational Noise from Converter System" Papers of Technical Meeting on Semiconductor Power Conversion, IEE of Japan. SPC-97-72. 19-24 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Junbo HU: "The High Frequency Leakage Current Caused by Capacitor between the Battery and Ground and its Suppression Technique" Papers of Technical Meeting on Semiconductor Power Conversion, IEE of Japan. SPC-98-44. 69-74 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshitaka NISHIMURA: "Novel Common Mode Current Reduction technique on the Converter System by Using Soft-Switching and Three Winding Transformer" 1998 National Convention Record of IEE Japan. No.813. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Seiki IGARASHI: "Analysis and reduction Methods of EMI Radiational Noise from Converter Sytem" Transactions of IEE Japan. Vol.118-D,No.3. 385-392 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-16  

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