发明名称 |
Method and apparatus for detecting shortcircuit in arm of GTO inverter |
摘要 |
Shortcircuit in an arm including a series connection of GTO's and reactors of an inverter is detected by sensing a voltage across the reactor. In one method, the shortcircuit in the arm is detected when voltages are coincidently applied to a P-line arm reactor and an N-line arm reactor for a predetermined time period. In another method, it is detected when an integrated value of a voltage across at least one of the reactors exceeds a predetermined level.
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申请公布号 |
US4384248(A) |
申请公布日期 |
1983.05.17 |
申请号 |
US19800160174 |
申请日期 |
1980.06.17 |
申请人 |
HITACHI, LTD. |
发明人 |
MATSUDA, YASUO;HONDA, KAZUO;MAEDA, TAKEO |
分类号 |
G01R31/02;H02H7/122;(IPC1-7):G01R31/02;H02H7/12;H02H3/28 |
主分类号 |
G01R31/02 |
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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