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Patent Searching and Data


Title:
POWER CONVERSION DEVICE AND THREE-PHASE POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/225410
Kind Code:
A1
Abstract:
The present invention is provided with: a plurality of power conversion cells 101; and a control device 300 for controlling the power conversion cells. The power conversion cells each have: a transformer 131; a primary converter 111 and a secondary converter 121; a primary bypass means 141; and a secondary bypass means 151. At least either input terminals or output terminals of the power conversion cells are connected respectively in series. When the primary converters are to be stopped, the control device turns on the primary bypass means and controls the secondary converters so as to set secondary DC link voltages generated in the secondary converters to prescribed values. When the secondary converters are to be stopped, the control device turns on the secondary bypass means and controls the primary converters so as to set primary DC link voltages generated in the primary converters to prescribed values.

Inventors:
KADOTA Mitsuhiro (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SHIMADA Takae (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
Application Number:
JP2018/016521
Publication Date:
December 13, 2018
Filing Date:
April 24, 2018
Export Citation:
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Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
International Classes:
H02M7/48; H02M5/458
Foreign References:
JP2017077114A2017-04-20
JP2012147613A2012-08-02
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (Hulic Toranomon Building, 1-18 Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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