Title:
DRIVE CONTROL APPARATUS FOR ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2015/019652
Kind Code:
A1
Abstract:
The present invention relates to a drive control apparatus for an electric motor, and a method for controlling the electric motor. The present invention suppresses generation of electric brake, while protecting a semiconductor relay from an excessive surge voltage. This drive control apparatus is configured by including: a drive circuit that drive-controls an electric motor; a semiconductor relay, which is disposed on a drive line between the drive circuit and the electric motor, and which interrupts power distribution to the electric motor from the drive circuit; and an active clamp circuit, which turns on the semiconductor relay when a difference between a potential on the drive circuit side of the semiconductor relay and a potential on the electric motor side of the semiconductor relay becomes equal to or more than a predetermined value.
Inventors:
OYAMA TOSHIAKI (JP)
KOSEKI TOMONOBU (JP)
YATSUGI TOMISHIGE (JP)
KOSEKI TOMONOBU (JP)
YATSUGI TOMISHIGE (JP)
Application Number:
PCT/JP2014/057093
Publication Date:
February 12, 2015
Filing Date:
March 17, 2014
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H02P27/06; H02P27/08; H02P29/00
Domestic Patent References:
| WO2010007672A1 | 2010-01-21 |
Foreign References:
| JP2010254128A | 2010-11-11 | |||
| JPH07288456A | 1995-10-31 | |||
| JP2013026769A | 2013-02-04 | |||
| 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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