DC/DC CONVERTER

WIPO Patent Application WO/2014/141353

A1

This DC/DC converter is provided with: a plurality of orthogonal transform circuits (11, 21) that are formed from a full bridge circuit having four switching elements and that transform direct current into alternating current; a plurality of transformers (12, 22) that are provided to each of the plurality of orthogonal transform circuits (11, 21) and to which the primary side coil side and the alternating current side of the orthogonal transform circuits (11, 21) are connected; and a plurality of AC/DC conversion circuits (13, 23) that are provided to each of the plurality of transformers (12, 22), are connected to the secondary side coil side of the plurality of transformers (12, 22), and convert alternating current to direct current. The plurality of orthogonal transform circuits (11, 21) are each connected in series, the plurality of AC/DC conversion circuits (13, 23) are each connected in series, and the ratio of the primary side coil and the secondary side coil of the plurality of transformers (12, 22) is approximately the same. When switching the switching elements in one of the orthogonal transform circuits (11, 21) between on and off, a phase is formed such that at least three of the four switching elements are on.

ICHIMURA SATOSHI (JP)
MIYAMOTO NAOYA (JP)
OYAMA TAKU (JP)
KATOH SHUJI (JP)
ONDA KENICHI (JP)
INOUE SHIGENORI (JP)
YOSHIHARA TOHRU (JP)

PCT/JP2013/056561

September 18, 2014

March 11, 2013

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HITACHI LTD (JP)

H02M3/335; H02M3/28

JPH01114368A	1989-05-08
JPH02184266A	1990-07-18
JP2002125374A	2002-04-26
JP2002223565A	2002-08-09
JP2005033967A	2005-02-03
JPH11215841A	1999-08-06
JPS61189167A	1986-08-22
US5771163A	1998-06-23

INOUE Manabu et al. (JP)
Manabu Inoue (JP)

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