Title:
MOTOR CONTROL DEVICE AND ELECTRIC STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/057878
Kind Code:
A1
Abstract:
A motor control device and an electric steering device according to the present invention comprise: a driving circuit for a motor; a semiconductor switching element that connects and disconnects a conduction path between the driving circuit and a neutral point of a multiphase winding set of the motor; a control unit that controls the driving circuit and the semiconductor switching element; and a control element that is provided in a ground path connecting a signal path for a control signal of the semiconductor switching element to the ground and that turns on the semiconductor switching element when a predetermined potential difference is reached between the potential on the winding side of the semiconductor switching element and the potential of the ground. Thus, the semiconductor switching element can be inhibited from being damaged by the counter electromotive voltage of the motor.
Inventors:
YASU KEITA (JP)
HIRAKI NAGAMORI (JP)
HIRAKI NAGAMORI (JP)
Application Number:
PCT/JP2023/030676
Publication Date:
March 21, 2024
Filing Date:
August 25, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02P29/02; B62D5/04; B62D6/00
Foreign References:
| JP2022094457A | 2022-06-27 |
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (JP)
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