CONTROLLER AND CONTROL METHOD OF CURRENT TYPE POWER CONVERTER

PROBLEM TO BE SOLVED: To reduce a spile voltage, generated in a current type power inverter, without relying upon a snubber circuit.SOLUTION: When the absolute value of a voltage Vu is larger than the absolute value of a voltage Vv and the absolute value of a voltage Vw, and the absolute value of th...

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Hauptverfasser: KISHIMOTO TOSHIHIKO, SHIMOSATO NOBORU, JO SHIN
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To reduce a spile voltage, generated in a current type power inverter, without relying upon a snubber circuit.SOLUTION: When the absolute value of a voltage Vu is larger than the absolute value of a voltage Vv and the absolute value of a voltage Vw, and the absolute value of the voltage Vu is larger than the absolute value of the voltage Vw, a controller 10 turns a switching element Wn on and then turns a switching element Vn on. When the absolute value of the voltage Vu is larger than the absolute value of the voltage Vv and the absolute value of a voltage Vw, and the absolute value of the voltage Vw is larger than the absolute value of the voltage Vv, the controller 10 turns the switching element Vn on and then turns the switching element Vw on.SELECTED DRAWING: Figure 1 【課題】電流形電力変換装置で生ずるスパイク電圧を、スナバ回路によらずに低減する。【解決手段】制御装置10は、例えば、電圧Vuの絶対値が電圧Vvの絶対値及び電圧Vwの絶対値より大きく、かつ、電圧Vvの絶対値が電圧Vwの絶対値より大きい場合、スイッチング素子Wnをオン状態とした後に続けてスイッチング素子Vnをオン状態とし、電圧Vuの絶対値が電圧Vvの絶対値及び電圧Vwの絶対値より大きく、かつ、電圧Vwの絶対値が電圧Vvの絶対値より大きい場合、スイッチング素子Vnをオン状態とした後に続けてスイッチング素子Vwをオン状態とするよう構成される。【選択図】図1