发明名称 |
Control apparatus and control method for AC electric motor |
摘要 |
A control apparatus and a control method for an AC electric motor detect DC bus current plural times at predetermined intervals during first and second predetermined periods and multiply vectors having integrated values of detected values during respective periods as elements by an inverse matrix of a matrix having integrated values during respective periods of sine and cosine functions of output voltage phase of an inverter at the moment that detection is made as elements to thereby estimate reactive and active currents.
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申请公布号 |
US8531148(B2) |
申请公布日期 |
2013.09.10 |
申请号 |
US201113171626 |
申请日期 |
2011.06.29 |
申请人 |
SUMITA SATOSHI;TOBARI KAZUAKI;MAEDA DAISUKE;NOTOHARA YASUO;HITACHI, LTD. |
发明人 |
SUMITA SATOSHI;TOBARI KAZUAKI;MAEDA DAISUKE;NOTOHARA YASUO |
分类号 |
H02P7/00 |
主分类号 |
H02P7/00 |
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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