发明授权
- 专利标题: Apparatus and method for ride through for AC induction motors
- 专利标题(中): 用于交流感应电动机的装置和方法
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申请号: US10945219申请日: 2004-09-20
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公开(公告)号: US07038423B2公开(公告)日: 2006-05-02
- 发明人: Thomas A. Reed , Douglas A. Wittenmyer
- 申请人: Thomas A. Reed , Douglas A. Wittenmyer
- 申请人地址: US OH Maumee
- 专利权人: Bay Controls, Inc.
- 当前专利权人: Bay Controls, Inc.
- 当前专利权人地址: US OH Maumee
- 代理机构: Fraser Martin Buchanan Miller LLC
- 代理商 James D. Miller
- 主分类号: H02P1/26
- IPC分类号: H02P1/26
摘要:
A method and an apparatus for controlling ride through of an induction motor by detecting a power loss from a power supply connected to the induction motor, disconnecting the induction motor from the power supply, monitoring a line voltage of the power supply, monitoring a back emf voltage generated by the induction motor and monitoring a phase differential between the line voltage and the back emf voltage. It is determined whether the monitored voltages are within a predetermined voltage limit and the phase differential is within a predetermined phase limit and the power supply is re-connected to the induction motor in response to the monitored voltages being within the predetermined voltage limit and the monitored phase differential being within the predetermined phase limit.
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