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Patent Searching and Data


Title:
POWER CONVERSION DEVICE AND MOTOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/194487
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve the reliability of elements in a power conversion device and a motor device. Therefore, the power conversion device is provided with a reverse converter and a control unit. The reverse converter has a plurality of upper arms and lower arms equipped with wide band-gap semiconductor switching elements. When an overcurrent flows through the reverse converter, the control unit turns off a first arm that is one of the upper and lower arms and disposed on the path of the overcurrent, and, after turning on a second arm paired with the first arm (period 1 → period 2), turns off the second arm in accordance with the current flowing through the second arm (period 2 → period 3).

Inventors:
ISHIGAKI TAKASHI (JP)
IBORI SATOSHI (JP)
SASAKI YASUSHI (JP)
TOMIYAMA KIYOTAKA (JP)
KAGEYAMA HIROSHI (JP)
Application Number:
PCT/JP2016/061993
Publication Date:
December 08, 2016
Filing Date:
April 14, 2016
Export Citation:
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Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H02M7/48
Domestic Patent References:
WO2012056766A12012-05-03
WO2013125366A12013-08-29
Foreign References:
JP2011188653A2011-09-22
JPH05207766A1993-08-13
JPS62166785A1987-07-23
Other References:
See also references of EP 3306801A4
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
Patent business corporation Tsutsui international patent firm (JP)
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