NPC-PWMインバータの並列接続における 過変調と非対称変調 Asymmetrical Modulation and Over-modulation Techniques of Parallel Connected NPC-PWM Inverters

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The neutral point clamped (NPC)-PWM inverter has significant advantages such as its ability to operate the motor with nearly sinusoidal current waveforms. For this reason, in larger capacity inverter systems, NPC-PWM inverters using the GTOs and the like have been also put into practical use, because of great advantages to large capacity ac motor drives, such as lower ripple currents and higher output voltages. With the spread of applications, still larger capacity inverters are also expected. However, since the capacities of such switching devices are insufficient, a certain technique and controlling method are proposed for the parallel connections of NPC inverters. In this paper, the conventional modulation techniques are extended to improve the inverter characteristics, in which the asymmetrical modulation and over-modulation techniques are introduced for the parallel connected NPC inverter.<br>In the proposed modulation strategies, the waveforms become more complicated, so it is difficult to analyze the output waveforms. For those waveforms, the analytical waveform analysis method using the switching function is proposed. By means of such method, a physical meaning of the harmonic generation can he realized to some extent.

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 117(1), 26-34, 1997-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10002723593
  • NII書誌ID(NCID)
    AN10012320
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09136339
  • NDL 記事登録ID
    4106134
  • 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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