POWER CONVERSION DEVICE

To provide a power conversion device that suppresses a surge voltage to a switching element.SOLUTION: A power conversion device 10 is connected between DC buses 3a and 3b and consumes a regenerative power flowing through the DC buses 3a and 3b. The power conversion device 10 includes a switching ele...

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1. Verfasser:	KASHIWAGI KOHEI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	To provide a power conversion device that suppresses a surge voltage to a switching element.SOLUTION: A power conversion device 10 is connected between DC buses 3a and 3b and consumes a regenerative power flowing through the DC buses 3a and 3b. The power conversion device 10 includes a switching element 12, a resistor 14 connected in series with the switching element 12 between the DC buses 3a and 3b, and a diode 13 that is connected in parallel to the resistor 14 and returns a reverse voltage due to the parasitic inductance of the resistor 14. The length of a first wiring between the switching element 12 and the diode 13 is shorter than the length of a second wiring between the resistor 14 and the diode 13.SELECTED DRAWING: Figure 1 【課題】スイッチング素子へのサージ電圧を抑制した電力変換装置を提供する。【解決手段】電力変換装置１０は、直流バス３ａ、３ｂ間に接続されて、直流バス３ａ、３ｂを流れる回生電力を消費する。電力変換装置１０は、スイッチング素子１２と、直流バス３ａ、３ｂ間でスイッチング素子１２に直列に接続された抵抗器１４と、抵抗器１４に並列に接続され、抵抗器１４の寄生インダクタンスによる逆電圧を還流させるダイオード１３と、を備える。スイッチング素子１２とダイオード１３との間の第１配線の長さは、抵抗器１４とダイオード１３との間の第２配線の長さよりも短い。【選択図】図１