- 专利标题: Synchronized reapplication of power for driving an electric motor
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申请号: US14832780申请日: 2015-08-21
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公开(公告)号: US09772381B2公开(公告)日: 2017-09-26
- 发明人: Christopher H. Bock , Christopher J. Wieloch , James J. Kinsella , Stefan T. Dziekonski
- 申请人: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
- 申请人地址: US OH Mayfield Heights
- 专利权人: Rockwell Automation Technologies, Inc.
- 当前专利权人: Rockwell Automation Technologies, Inc.
- 当前专利权人地址: US OH Mayfield Heights
- 代理机构: Fletcher Yoder P.C.
- 主分类号: H02P1/26
- IPC分类号: H02P1/26 ; G01R31/327 ; H01H50/16 ; G01K7/00 ; H01H47/00 ; H01H47/22 ; H01H50/00 ; H01H47/26 ; H01H47/02 ; H01H50/38 ; H01H50/32 ; H01H89/00 ; H01H9/26 ; H01H9/30 ; H02P1/32 ; H01H9/56 ; H01H71/08
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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