发明名称 |
Permanent magnet synchronous motor controller and electric vehicle controller |
摘要 |
A permanent magnet synchronous motor controller includes an inverter for supplying an alternating current power converted from a direct current power to a three-phase permanent magnet synchronous motor, having a pair of switching elements for each of said three phases of the motor; a smoothing capacitor for smoothing the direct current power connected to the inverter in parallel; and a control unit for controlling the motor by ON-OFF controlling each of the switching elements of the inverter, which further including a short circuit transition processing portion for changing control to 3-phase short circuit after performing precursory ON-OFF control of each of the switching elements so as to avoid occurrence of over current at an initial period of performing the 3-phase short circuit while the motor is being rotated.
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申请公布号 |
US5914582(A) |
申请公布日期 |
1999.06.22 |
申请号 |
US19980012560 |
申请日期 |
1998.01.23 |
申请人 |
HITACHI, LTD. |
发明人 |
TAKAMOTO, YUUSUKE;MASAKI, RYOSO;KATADA, HIROSHI;OBARA, SANSHIRO |
分类号 |
B60L3/00;(IPC1-7):H02P5/34 |
主分类号 |
B60L3/00 |
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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