Search International and National Patent Collections

1. (WO2018003199) PARALLEL POWER SUPPLY DEVICE

Pub. No.:    WO/2018/003199    International Application No.:    PCT/JP2017/010412
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Thu Mar 16 00:59:59 CET 2017
IPC: H02M 3/28
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: HIGAKI Yusuke
檜垣 優介
KONDO Ryota
近藤 亮太
Title: PARALLEL POWER SUPPLY DEVICE
Abstract:
A parallel power supply device (100) is provided with: first and second switching circuits (5, 8) in which a plurality of DC/DC converters (30) are connected in parallel, the DC/DC converters (30) sandwiching a transformer (3); first and second reactors (9, 10); and a control circuit (20). The control circuit (20) generates a duty ratio such that the deviation between the load voltage and a target voltage is 0. The magnitude of the duty ratio is fixed at 0 when less than a setting value Vth, and otherwise is corrected so as to be smaller than the setting value Vth. The phase shift amounts (θ1, θ2) of the drive signals (21a, 21b) of the first and second switching circuits (5, 8) are determined, and the first and second switching circuits (5, 8) are phase-shift controlled.