发明公开
- 专利标题: DEVICE FOR DRIVING A PLURALITY OF MOTORS AND ELECTRIC APPARATUS INCLUDING THE SAME
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申请号: EP20205589.3申请日: 2020-11-04
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公开(公告)号: EP3817217A1公开(公告)日: 2021-05-05
- 发明人: KWON, Sunku , JUN, Chaseung , JEONG, Jaehoon , CHOE, Sehwa
- 申请人: LG Electronics Inc.
- 申请人地址: KR Yeongdeungpo-gu Seoul 07336 128, Yeoui-daero,
- 代理机构: Ter Meer Steinmeister & Partner
- 优先权: KR20190139602 20191104
- 主分类号: H02P5/74
- IPC分类号: H02P5/74
摘要:
A device for driving a plurality of motors and an electric apparatus having the same include a first capacitor and a second capacitor; an inverter connected to a DC terminal; a multi-phase motor connected to the inverter; a single-phase motor serially connected with the multi-phase motor; and a controller to control the inverter, wherein, for starting the single phase motor during operation of the multi-phase motor, the controller controls to perform an alignment period for alignment of a rotor of the single-phase motor and a voltage compensation period for compensating a voltage change of a DC terminal neutral point between the first capacitor and the second capacitor based on the alignment of the rotor of the single-phase motor. Accordingly, it is possible to stably start the single-phase motor while reducing the rotational torque ripple of the multi-phase motor during the multi-phase motor operation.
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