发明名称 |
Controlador de acionamento para um motor de ca |
摘要 |
<p>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 17A is configured to open a motor-side contactor 16 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 MKCO becomes off (L level).</p> |
申请公布号 |
BRPI0822265(A2) |
申请公布日期 |
2015.06.23 |
申请号 |
BR2008PI22265 |
申请日期 |
2008.02.29 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
HIDETOSHI KITANAKA;HIDEO OKAYAMA;SHINICHI FURUTANI;TOSHIE TAKEUCHI;MITSURU TSUKIMA |
分类号 |
H02H7/085;H02H7/08;H02P23/00;H02P27/06 |
主分类号 |
H02H7/085 |
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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