发明名称 |
POWER CONVERSION DEVICE |
摘要 |
A gate voltage and a reference value are compared in a period in which the gate voltage of a semiconductor switching element is oscillated, alternately repeating a state in which the gate voltage is larger than the reference value and a state in which the gate voltage is smaller than the reference value is detected, and short circuit or non-short-circuit is determined. Therefore, short circuit of the semiconductor switching element is accurately detected. |
申请公布号 |
EP2961047(A4) |
申请公布日期 |
2016.11.16 |
申请号 |
EP20130875894 |
申请日期 |
2013.02.25 |
申请人 |
HITACHI, LTD. |
发明人 |
OGAWA, KAZUTOSHI;ISHIKAWA, KATSUMI;HATANAKA, AYUMU;KAGEYAMA, HIROSHI;MASUDA, TORU |
分类号 |
H02M1/00;H02H7/00;H02H7/12;H02M1/08;H03K17/0812 |
主分类号 |
H02M1/00 |
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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