Title:
MOTOR CONTROL DEVICE, MOTOR DEVICE, AND STEERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/009707
Kind Code:
A1
Abstract:
A motor control device, a motor device, and a steering system of the present invention are provided with: a third inverter that is connected to a first branch point between a first multi-phase winding set and a first inverter and also to a second branch point between a second multi-phase winding set and a second inverter, and that is able to supply alternating-current power to the first multi-phase winding set or to the second multi-phase winding set; switching relays comprising a first switching relay arranged between the first branch point and the third inverter, and a second switching relay arranged between the second branch point and the third inverter; and a cutoff relay arranged between the first branch point/the second branch point and ground. The first switching relay and the second switching relay have a diode for conducting current in the direction going from a motor toward the third inverter. The cutoff relay has a diode for conducting current in the direction going from ground toward the motor.
Inventors:
KIMURA MAKOTO (JP)
Application Number:
PCT/JP2023/021958
Publication Date:
January 11, 2024
Filing Date:
June 13, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P25/22; H02P27/06
Domestic Patent References:
| WO2018163591A1 | 2018-09-13 | |||
| WO2013140906A1 | 2013-09-26 |
Foreign References:
| JP2014045576A | 2014-03-13 | |||
| JP2013518549A | 2013-05-20 |
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (JP)
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