Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/062885
Kind Code:
A1
Abstract:
A motor control device (40) controls the driving of a motor (10) including a motor winding (11), said device comprising a drive circuit (41) and a control unit (50). The drive circuit (41) includes switching elements (411-413) that switch, ON and OFF, the supply of current to each phase of the motor winding (11). The control unit (50) includes: a drive control unit (55) that controls the ON and OFF actuation of the switching elements (411-413); and an abnormality determination unit (52) that performs abnormality determination of a path for supplying current to the motor winding (11). The abnormality determination unit (52) identifies a failed phase on the basis of a voltage detection value obtained when the switching elements (411-413) of all phases are turned OFF, and identifies a constant energization failure of the failed phase on the basis of at least one of a current detection value obtained when the switching element of the identified failed phase is turned ON and a rotation position detection value obtained when the switching elements (411-413) of one phase or a plurality of phases that are normal are turned ON.
Inventors:
YAMADA JUN (JP)
YAMAMOTO DAISUKE (JP)
TATEYAMA HIROKI (JP)
OISHI KENICHI (JP)
YAMAMOTO DAISUKE (JP)
TATEYAMA HIROKI (JP)
OISHI KENICHI (JP)
Application Number:
PCT/JP2023/031695
Publication Date:
March 28, 2024
Filing Date:
August 31, 2023
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P29/024; H02P29/20
Domestic Patent References:
| WO2019054026A1 | 2019-03-21 | |||
| WO2021229703A1 | 2021-11-18 |
Foreign References:
| JP2014180068A | 2014-09-25 | |||
| JP2019071726A | 2019-05-09 | |||
| JP2022076150A | 2022-05-19 |
Attorney, Agent or Firm:
HATTORI & PARTNERS (JP)
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