Invention Grant
- Patent Title: Motor driving apparatus and refrigeration cycle equipment
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Application No.: US16976920Application Date: 2018-03-30
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Publication No.: US11264924B2Publication Date: 2022-03-01
- Inventor: Yuichi Shimizu , Kazunori Hatakeyama , Keisuke Uemura
- Applicant: Mitsubishi Electric Corporation
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Posz Law Group, PLC
- International Application: PCT/JP2018/013790 WO 20180330
- International Announcement: WO2019/187059 WO 20191003
- Main IPC: H02P3/22
- IPC: H02P3/22 ; H02P21/18 ; H02P21/22 ; F25B49/02 ; H02H7/08 ; H02H7/122 ; H02P6/24 ; H02P27/08

Abstract:
In a motor driving apparatus including an inverter connectable to n motors (n being an integer not less than 2) each including a rotor having a permanent magnet, braking operation is performed on i (i being an integer from 1 to n−1) of the n motors, and then braking operation is performed on j (j being an integer from 1 to n−i) of the n motors other than the i motors. It is possible to reduce the risks of failure of the inverter and demagnetization of the motors due to overcurrent by reducing current flowing through the inverter and the motors when the braking operation is performed.
Public/Granted literature
- US20210044223A1 MOTOR DRIVING APPARATUS AND REFRIGERATION CYCLE EQUIPMENT Public/Granted day:2021-02-11
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