Title:
MOTOR CONTROL DEVICE FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2015/019653
Kind Code:
A1
Abstract:
The present invention relates to a motor control device for a vehicle used, for example, for an electric power steering control device which generates an assistive force with an electric motor as a driving source in accordance with a steering operation.
The motor control device suppresses a failure due to a surge voltage without increasing the costs associated with high accuracy or high speed while improving reliability. The motor control device for a vehicle comprises: a drive circuit for driving and controlling an electric motor; and a switch-off part disposed on a drive line, including a semiconductor switch and a diode connected in parallel with the current path of the semiconductor switch. When switching off the energization from the drive circuit to the electric motor, the motor control device turns off the semiconductor switch while a current flows in the semiconductor switch in the direction along the forward direction of the diode.
Inventors:
KOSEKI TOMONOBU (JP)
FUSE TOMOYASU (JP)
OYAMA TOSHIAKI (JP)
FUSE TOMOYASU (JP)
OYAMA TOSHIAKI (JP)
Application Number:
PCT/JP2014/057157
Publication Date:
February 12, 2015
Filing Date:
March 17, 2014
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B62D5/04; H02P21/05; H02P23/04; H02P27/06; H02P27/08
Domestic Patent References:
| WO2010007672A1 | 2010-01-21 |
Foreign References:
| JP2009262648A | 2009-11-12 | |||
| JP2010254128A | 2010-11-11 | |||
| JP2011244611A | 2011-12-01 |
Attorney, Agent or Firm:
SASAJIMA, Fujio (JP)
Sasajima Wealth 2 male (JP)
Sasajima Wealth 2 male (JP)
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