发明名称 |
System and method for monitoring and controlling stator winding temperature in a de-energized AC motor |
摘要 |
A system and method for measuring and controlling stator winding temperature in an AC motor while idling is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of a multi-phase AC motor. The circuit further includes a plurality of switching devices to control current flow and terminal voltages in the multi-phase AC motor and a controller connected to the circuit. The controller is configured to activate the plurality of switching devices to create a DC signal in an output of the motor control device corresponding to an input to the multi-phase AC motor, determine or estimate a stator winding resistance of the multi-phase AC motor based on the DC signal, and estimate a stator temperature from the stator winding resistance. Temperature can then be controlled and regulated by DC injection into the stator windings. |
申请公布号 |
US8084984(B2) |
申请公布日期 |
2011.12.27 |
申请号 |
US20080341044 |
申请日期 |
2008.12.22 |
申请人 |
LU BIN;LUEBKE CHARLES JOHN;HABETLER THOMAS G.;ZHANG PINJIA;BECKER SCOTT K.;EATON CORPORATION |
发明人 |
LU BIN;LUEBKE CHARLES JOHN;HABETLER THOMAS G.;ZHANG PINJIA;BECKER SCOTT K. |
分类号 |
H02P1/26;H02K11/00;H02P23/14 |
主分类号 |
H02P1/26 |
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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