電圧形PWMコンバータを用いた大容量インバータシステムの直流主回路共振抑制法 A New Method of Damping Harmonic Resonance at the DC-Link in Large Capacity Rectifier-Inverter System

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This paper proposes a new method of damping harmonic resonance at the dc-link of a large-capacity rectifier-inverter system such as in rapid-transit railways. A voltage-source PWM converter is connected in series to the dc capacitor of the rectifier through a matching transformer, acting as a damping resistor to the dc capacitor current. No filters are needed to extract harmonic components from the dc capacitor current. This results in a quick response and highly stable damping. The relationship between the control gain of the PWM converter and the required rating is theoretically discussed. We show that the required rating is less than one-thousandth of that previously proposed. In particular, regenerating the power consumed by the PWM converter is very important because of the large power in practical systems. Normally, an additional PWM inverter is connected to the dc bus of the PWM converter to regenerate the consumed power. The additional inverter regenerates the dc power to the ac source through a transformer. This method, however, makes the damping circuit complex, making the proposed method for the dc-link harmonic resonance less practicable. In this paper, a simple and novel scheme that utilizes the dc-link voltage of the rectifier as a dc source for the PWM converter is proposed. The excellent practicability of the proposed damping method with the novel regenerating scheme is confirmed using digital computer simulation.

収録刊行物

  • 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

    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 122(6), 601-608, 2002-06-01

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10008509315
  • NII書誌ID(NCID)
    AN10012320
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    09136339
  • NDL 記事登録ID
    6175034
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-1608
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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