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Patent Searching and Data


Title:
POWER CONVERSION DEVICE AND DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/075202
Kind Code:
A1
Abstract:
This power conversion device comprises fuses that fuse at a prescribed rated current or higher on respective three-phase output lines, the power conversion device comprising: a short-circuit failure sensing unit that senses short-circuit failures of switching elements that form a three-phase power conversion circuit; and a fuse fusing current control unit that, so that output current in a phase for which the short-circuit failure sensing unit sensed a short-circuit failure is at or higher than the rated current of the fuse, and output currents of the remaining two phases other than the phase for which the short-circuit failure was sensed are respectively below the rated currents of the fuses, controls the switching elements of the remaining two phases.

Inventors:
INADA RYOICHI (JP)
KANEKAWA NOBUYASU (JP)
NAKANO HIROSHI (JP)
SHIGETA SATORU (JP)
Application Number:
PCT/JP2021/036345
Publication Date:
April 14, 2022
Filing Date:
September 30, 2021
Export Citation:
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Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
H02M7/48; H02P27/06
Foreign References:
US5469351A1995-11-21
JP2012070615A2012-04-05
US20070030606A12007-02-08
JP2011223788A2011-11-04
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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