Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/155776
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve availability during a power outage. In this power conversion device 1, a gate drive power supply circuit 50 can supply gate drive power within a predetermined normal voltage range. When the voltage of the gate drive power applied from the gate drive power supply circuit 50 to a lower arm gate circuit 40 is below the normal voltage range, a backup power supply circuit 70 supplies the gate drive power to the lower arm gate circuit 40. When the gate drive power is being supplied from the backup power supply circuit 70, the lower arm gate circuit 40 drives a lower arm switching circuit 22 while in a short-circuit state in which all switching elements of the lower arm switching circuit 22 are turned on.
Inventors:
OGURA TAKASHI (JP)
KURIHARA RYUJI (JP)
INADA RYOICHI (JP)
KURIHARA RYUJI (JP)
INADA RYOICHI (JP)
Application Number:
PCT/JP2018/047723
Publication Date:
August 15, 2019
Filing Date:
December 26, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H02M7/48; H02P27/06
Domestic Patent References:
| WO2016104318A1 | 2016-06-30 |
Foreign References:
| JP2017118815A | 2017-06-29 | |||
| JP2011244625A | 2011-12-01 | |||
| JP2011239608A | 2011-11-24 | |||
| JP2014158399A | 2014-08-28 | |||
| JP2014217131A | 2014-11-17 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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