发明名称 |
AC MOTOR CONTROLLER |
摘要 |
There is provided an AC motor controller capable of detecting an abnormal state of a motor cable while an AC motor is operating without using a special circuit but using a processor. The AC motor controller includes an AC motor; an inverter for driving the AC motor with a motor current through a motor cable; and a motor current detector for detecting the motor current flowing in the motor cable of the AC motor, in which a processor detects an abnormal state of the motor cable such as an inter-phase short circuit and an open circuit based on the motor current detected by the motor current detector. |
申请公布号 |
EP1876700(A4) |
申请公布日期 |
2011.10.26 |
申请号 |
EP20050734517 |
申请日期 |
2005.04.15 |
申请人 |
HITACHI, LTD. |
发明人 |
MATSUI, HIROKAZU;SAWADA, TAKEFUMI;YOSHIHARA, SHIGEYUKI |
分类号 |
H02H7/08;B60L3/00;G01R31/06;G01R31/34;H02P29/02 |
主分类号 |
H02H7/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|