- 专利标题: MOTOR STARTERS USING PULSE SEQUENCES WITH SUBFUNDAMENTAL MODULATION
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申请号: US15254729申请日: 2016-09-01
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公开(公告)号: US20180062544A1公开(公告)日: 2018-03-01
- 发明人: Kevin Lee Vaneyll , Benjamin Stewart Wells , Geraldo Nojima
- 申请人: Eaton Corporation
- 主分类号: H02P1/04
- IPC分类号: H02P1/04 ; H02P1/16
摘要:
A motor starter includes a first switch configured to couple and decouple an AC power source to a motor, a second switch configured to bypass the first switch, and a control circuit configured to operate the first switch to modulate an AC voltage applied to the motor from the AC power source at a frequency that is less than a fundamental frequency of the AC voltage and to operate the second switch to bypass the first switch responsive to operation of the motor meeting a predetermined criterion.