发明申请
- 专利标题: SYNCHRONIZED REAPPLICATION OF POWER FOR DRIVING AN ELECTRIC MOTOR
- 专利标题(中): 用于驱动电动机的同步重新启动电源
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申请号: US14832780申请日: 2015-08-21
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公开(公告)号: US20160134207A1公开(公告)日: 2016-05-12
- 发明人: Christopher H. Bock , Christopher J. Wieloch , James J. Kinsella , Stefan T. Dziekonski
- 申请人: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
- 主分类号: H02P1/32
- IPC分类号: H02P1/32 ; H02P1/26
摘要:
One embodiment describes a method that includes, when a motor is disconnected from a power source: starting, using a control circuitry, a counter at a first voltage zero-crossing by either a source voltage or a back electromotive force generated by the motor; stopping, using the control circuitry, the counter at a next subsequent second voltage zero-crossing by either the source voltage or the back electromotive force; monitoring, using the control circuitry, a trend in counter values; and instructing, using the control circuitry, one or more switching devices to reconnect the power source to the motor after a local minimum in the counter value trend such that the source voltage is leading the back electromotive force.
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