发明名称 |
DRIVE CONTROL DEVICE OF ALTERNATING-CURRENT MOTOR |
摘要 |
An AC motor drive control device including: an inverter INV, having a plurality of switching elements subjected to on-off control, for converting a DC voltage to an AC voltage with a desired frequency to drive an AC motor 6; a motor opening contactor MMK connected between the inverter INV and the AC motor 6; a switching operation beforehand detection unit 55 for detecting a switching operation of the motor opening contactor MMK prior to the contact or detach of main contacts and outputting a switching operation beforehand detection signal; and a control unit 10A having an inverter control unit 70 for performing the on-off control for the plurality of switching elements and switching control for the motor opening contactor MMK, and controlling the inverter INV based on the switching operation beforehand detection signal. |
申请公布号 |
EP2521255(A4) |
申请公布日期 |
2013.07.03 |
申请号 |
EP20090852801 |
申请日期 |
2009.12.28 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
TSUKIMA, MITSURU;KITANAKA, HIDETOSHI |
分类号 |
H02P27/06;B60L3/00;B60L3/04;B60L9/18;B60L15/02;H01H47/00 |
主分类号 |
H02P27/06 |
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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