公开(公告)号：US10536086B2

公开(公告)日：2020-01-14

申请号：US15846324

申请日：2017-12-19

申请人： TDK CORPORATION

发明人： Kazuki Iwaya ,  Hiroshige Yanagi ,  Natsumi Ogawa ,  Toshimasa Miyazaki

IPC分类号： H02M3/335 ,  H02M1/08

摘要： A converter apparatus includes: a first transformer with two windings; a first full-bridge circuit with four switches, DC input/output units connected to a first DC power supply, and AC input/output units connected via an inductor to one winding of the first transformer; a second full-bridge circuit with four switches, DC input/output units connected to a second DC power supply, and AC input/output units connected via an inductor to another winding of the first transformer; a second transformer with two windings, one being connected via an inductor to the AC input/output units of the first circuit; a third full-bridge circuit with four switches, DC input/output units connected to a third DC power supply, and AC input/output units connected via an inductor to another winding of the second transformer; and a control unit for controlling the switches to supply power between the first to third DC power supplies.

公开(公告)号：US10116221B2

公开(公告)日：2018-10-30

申请号：US15074023

申请日：2016-03-18

申请人： TDK Corporation

发明人： Kazuki Iwaya ,  Toshimasa Miyazaki ,  Kazu Shoji

IPC分类号： H02M3/335 ,  H02M3/337 ,  H02M1/00

摘要： A series compensating electric power transmission system has an insulated type DC-DC converter that operates in the first through fourth quadrants, first and second DC voltage sources, and first and second power converters. In the converter, a first I/O positive terminal is connected to a first voltage source positive terminal. A first I/O negative terminal is connected to a first voltage source negative terminal. One of second I/O positive and negative terminals is connected to the first voltage source positive terminal. The other of the second I/O positive and negative terminals is connected to a second voltage source positive terminal. The first power converter converts power between the first I/O positive and negative terminals and first AC I/O terminals. The second power converter converts power between the second I/O positive and negative terminals and second AC I/O terminals. The second power converter is configured with a plurality of bidirectional switches.