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1. 发明公开

KR1020000022425A 전력변환장치 无效
标题翻译：电源转换器
公开(公告)号：KR1020000022425A
公开(公告)日：2000-04-25
申请号：KR1019980710858
申请日：1996-07-03
申请人： 가부시끼가이샤 히다치 세이사꾸쇼
发明人： 기무라신 , 야츠오쯔도무 , 이와사키다카유키
IPC分类号： H02M7/517 , H02M7/48
摘要： PURPOSE: A power inverter is provided to suppress over voltages and oscillating voltage applied to the semiconductor switch. CONSTITUTION: A power inverter has a group of semiconductor switches including at least one semiconductor switch. The semiconductor switch group is connected to a DC terminal with DC potential. a clamping circuit is connected to the semiconductor switch or the DC terminal. Alternatively, a snubber circuit connected in parallel to the semiconductor switch suppresses dV/dt of the voltage applied to the semiconductor and protects the semiconductor switch from over voltages. The snubber circuit has a DC connection circuit of a diode and a capacitor. A diode having a wide band gap is connected in parallel to a snubber diode or a snubber capacitor in a snubber circuit.
摘要翻译：目的：提供电源逆变器来抑制施加到半导体开关的过电压和振荡电压。构成：电力逆变器具有包括至少一个半导体开关的一组半导体开关。半导体开关组连接到具有直流电位的直流端子。钳位电路连接到半导体开关或DC端子。或者，与半导体开关并联连接的缓冲电路抑制施加到半导体的电压的dV / dt，并保护半导体开关免受过电压的影响。缓冲电路具有二极管和电容器的直流连接电路。具有宽带隙的二极管与缓冲电路中的缓冲二极管或缓冲电容器并联连接。

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