发明名称 |
Driving controller for AC motor |
摘要 |
An object is to provide a driving controller for an AC motor that can prevent generation of an excessive voltage between lines of a motor and between contacts of a motor cut-off contactor and a continuous arc between contacts of the motor cut-off contactor, regardless of the type of a fault occurred, even when a phase in which a current zero point is not generated and a phase in which a current zero point is generated coexist in a fault current that flows between an inverter and the motor. A control unit is configured to open a motor cut-off contactor not at a time when a state of a detected current is determined to be abnormal but at a time when the state of the current is determined to be normal, even when a basic contactor-close command MKC0 becomes off (L level). |
申请公布号 |
US8598837(B2) |
申请公布日期 |
2013.12.03 |
申请号 |
US20080863780 |
申请日期 |
2008.02.29 |
申请人 |
KITANAKA HIDETOSHI;OKAYAMA HIDEO;FURUTANI SHINICHI;TAKEUCHI TOSHIE;TSUKIMA MITSURU;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
KITANAKA HIDETOSHI;OKAYAMA HIDEO;FURUTANI SHINICHI;TAKEUCHI TOSHIE;TSUKIMA MITSURU |
分类号 |
H02P27/04 |
主分类号 |
H02P27/04 |
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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