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Patent Searching and Data


Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/171568
Kind Code:
A1
Abstract:
This power conversion device (10) is provided with: a transformer (20); a plurality of converter cells (30); a control circuit (400) which controls the switching on/off of semiconductor switching elements in the converter cells. The transformer (20) has: a primary winding group (PRW) multi-phase connected to an AC power source (101) having multiple phases; and a plurality of secondary winding groups (SDW1, SDW2). Each of the secondary winding groups (SDW1, SDW2) has a secondary winding of the respective phases and configured of a single-phase open winding. Each of the converter cells (30) converts a single-phase AC voltage between AC nodes connected to each secondary winding to a DC voltage through the on/off-control of the semiconductor switching element and outputs the converted voltage between a pair of DC nodes. DC nodes of the plurality of converter cells (30) are connected in series between first and second DC terminals (102P, 102N).

Inventors:
TSURUTA, Ryoji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
SUZUKI, Hiromitsu (3-1-1 Kyobashi Chuo-k, Tokyo 31, 〒1040031, JP)
OKA, Toshiaki (3-1-1 Kyobashi Chuo-k, Tokyo 31, 〒1040031, JP)
NAKAMURA, Ritaka (3-1-1 Kyobashi Chuo-k, Tokyo 31, 〒1040031, JP)
NAKAMURA, Masashi (3-1-1 Kyobashi Chuo-k, Tokyo 31, 〒1040031, JP)
Application Number:
JP2018/009174
Publication Date:
September 12, 2019
Filing Date:
March 09, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION (3-1-1 Kyobashi, Chuo-ku Tokyo, 31, 〒1040031, JP)
International Classes:
H02M7/12; H02M5/458; H02M7/25; H02M7/797
Foreign References:
JPH0746846A1995-02-14
US20100328970A12010-12-30
JP2015012769A2015-01-19
JP2002165447A2002-06-07
JPH1141931A1999-02-12
JP2013211970A2013-10-10
JP2012080765A2012-04-19
EP2916447A12015-09-09
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Festival Tower West, 2-4 Nakanoshima 3-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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