Title:
CURRENT SHARING DEVICE AND METHOD FOR POWER SYSTEM, AND POWER MODULES
Document Type and Number:
WIPO Patent Application WO/2021/056517
Kind Code:
A1
Abstract:
A current sharing apparatus and method for a power system, and power modules (1, 2…N). The power system comprises the plurality of power modules (1, 2…N). Each power module (1, 2…N) is electrically connected to a current sharing device, and each current sharing device comprises: a sampling signal output unit (111), a difference signal output unit (112), and a control signal output unit (113). The sampling signal output unit (111) collects an output current of each power module (1, 2…N) and then outputs a sampling signal (S1); the difference signal output unit (112) compares the sampling signal with a current sharing bus signal and then outputs a difference signal (S2); the control signal output unit (113) processes the difference signal and then outputs a control signal to each power module (1, 2…N), and the power module (1, 2…N) receives the control signal and adjusts the output current thereof according to the control signal. The current sharing apparatus and method for the power system, and the power modules relate to the technical field of power management. By current sharing control without master and slave units, current sharing of multiple current modules is realized, and the expandability of the power system is improved.
Inventors:
LI TONGLI (CN)
WU QINGFENG (CN)
ZHANG PING (CN)
ZHU GUANGHUI (CN)
QI WANHENG (CN)
HOU CHUNYING (CN)
JIN LONG (CN)
WU QINGFENG (CN)
ZHANG PING (CN)
ZHU GUANGHUI (CN)
QI WANHENG (CN)
HOU CHUNYING (CN)
JIN LONG (CN)
Application Number:
PCT/CN2019/108902
Publication Date:
April 01, 2021
Filing Date:
September 29, 2019
Export Citation:
Assignee:
TIANJIN RAILWAY SIGNAL CO LTD (CN)
CRSC XIAN RAIL TRANSIT IND GROUP CO LTD (CN)
CRSC XIAN RAIL TRANSIT IND GROUP CO LTD (CN)
International Classes:
H02J1/10; H02J4/00; H02M1/00
Foreign References:
| CN103812508A | 2014-05-21 | |||
| CN104467368A | 2015-03-25 | |||
| CN103683479A | 2014-03-26 | |||
| CN103580450A | 2014-02-12 | |||
| CN108282021A | 2018-07-13 | |||
| CN102005903A | 2011-04-06 | |||
| CN109361311A | 2019-02-19 | |||
| CN103050879A | 2013-04-17 | |||
| US20090009005A1 | 2009-01-08 | |||
| US4717833A | 1988-01-05 |
Attorney, Agent or Firm:
BEIJING IPLING INTELLECTUAL PROPERTY LAW FIRM (CN)
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