Title:
POWER CONVERSION DEVICE AND DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/171096
Kind Code:
A1
Abstract:
This power conversion device comprises: a power conversion circuit in which at least three-phases of upper/lower arm circuits having switching elements connected in series are connected in parallel and which outputs AC current to a motor via an output line, said AC current being generated by the switching elements of each phase; a breaker that is provided on the output line of each phase and allows the AC current to flow or interrupts the AC current; a first failure location determination unit that determines a failure location of the switching elements; a breaker control unit that sets, as a failure phase, a phase corresponding to the switching element determined as the failure location by the first failure location determination unit and controls the breaker of the failure phase so that the AC current of the failure phase is allowed to flow at a predetermined specific electric angle in one electric angle cycle and the AC current of the failure phase is interrupted at another electric angle except the specific electric angle; and a failure-time current control unit that controls the drive of other switching elements different from the switching element determined as the failure location.
Inventors:
INADA RYOICHI (JP)
NAKANO HIROSHI (JP)
KANEKAWA NOBUYASU (JP)
SHIGETA SATORU (JP)
NAKANO HIROSHI (JP)
KANEKAWA NOBUYASU (JP)
SHIGETA SATORU (JP)
Application Number:
PCT/JP2022/048413
Publication Date:
September 14, 2023
Filing Date:
December 27, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02M7/48
Domestic Patent References:
| WO2011048683A1 | 2011-04-28 | |||
| WO2010122648A1 | 2010-10-28 |
Foreign References:
| JP2013110839A | 2013-06-06 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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