发明名称 |
Apparatus for discerning faulty switching device |
摘要 |
An apparatus for detecting a faulty switching device of a current-supply type full-bridge inverter includes current transformers connected to each pair of series connected switching devices of the inverter. A differential amplifier is provided for subtracting one detected current value output by one current transformer from another detected current value output by another current transformer. A rectifier is provided for smoothing and rectifying the output of the differential amplifier, and a comparator is provided for comparing the smoothed and rectified output of the rectifier with a reference value.
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申请公布号 |
US4916598(A) |
申请公布日期 |
1990.04.10 |
申请号 |
US19890347820 |
申请日期 |
1989.05.04 |
申请人 |
NETUREN COMPANY LIMITED |
发明人 |
TAKASE, SHINICHI;ISHII, MASAYUKI |
分类号 |
H02M7/5387 |
主分类号 |
H02M7/5387 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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