发明授权
- 专利标题: Apparatus and method for driving an induction motor
- 专利标题(中): 用于驱动感应电动机的装置和方法
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申请号: US11764820申请日: 2007-06-19
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公开(公告)号: US07906933B2公开(公告)日: 2011-03-15
- 发明人: Daisuke Tan , Hirohisa Satomi , Shigetoshi Okamatsu , Koichi Miyazaki
- 申请人: Daisuke Tan , Hirohisa Satomi , Shigetoshi Okamatsu , Koichi Miyazaki
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Antonelli, Terry, Stout & Kraus, LLP.
- 优先权: JP2006-172531 20060622
- 主分类号: H02P27/04
- IPC分类号: H02P27/04
摘要:
An induction motor drive includes a plurality of inverters, a changeover switch which changes over outputs of the plurality of inverters to be supplied to one induction motor and a changeover controller which controls the changeover switch on the basis of a failure detection signal of one inverter to change over from the one inverter to another inverter to start the other inverter so that the induction motor is driven. The changeover controller includes a frequency/phase detector which always detects a frequency and a phase of a terminal voltage of the induction motor and a starting frequency/phase setting device which controls a frequency and a phase at starting of the other inverter in accordance with detected values of the frequency/phase detector when the failure signal is inputted.
公开/授权文献
- US20080007196A1 APPARATUS AND METHOD FOR DRIVING AN INDUCTION MOTOR 公开/授权日:2008-01-10