Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/070464
Kind Code:
A1
Abstract:
A motor control device (40) controls the driving of a motor (10) having 3-phase motor windings (11) and comprises a drive circuit (41) and a control unit (50). The drive circuit (41) has switching elements (411 to 413) that switch the on/off of energization to each phase of the motor windings (11). The control unit (50) has: a drive control unit (55) that controls the on/off operation of the switching elements (411 to 413) by a feedback control based on the detection value of a rotational position sensor (13); and an abnormality determination unit (52) that determines a disconnection failure of the motor windings (11). When performing a normal 2-phase drive for driving the motor (10) using normal 2 phases when the disconnection failure occurs in one phase of the 3 phases, the drive control unit (55) performs pre-start preparation processing for performing energization with a pattern different from an energization pattern to an energization holding phase that is an energization phase at the starting of the normal 2-phase drive and then energizing the energization holding phase.
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Inventors:
YAMAMOTO DAISUKE (JP)
YAMADA JUN (JP)
OISHI KENICHI (JP)
YAMADA JUN (JP)
OISHI KENICHI (JP)
Application Number:
PCT/JP2023/031704
Publication Date:
April 04, 2024
Filing Date:
August 31, 2023
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P29/028
Foreign References:
| JP2016158413A | 2016-09-01 | |||
| JP2022024256A | 2022-02-09 |
Attorney, Agent or Firm:
HATTORI & PARTNERS (JP)
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