Title:
TWO-STAGE TOPOLOGICAL DRIVING POWER SUPPLY CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2024/087162
Kind Code:
A1
Abstract:
Disclosed in the present invention is a two-stage topological driving power supply circuit, comprising a first-stage topological circuit and a second-stage topological circuit, which are connected in series. The first-stage topological circuit is a non-isolated DC-DC circuit. The second-stage topological circuit comprises: a first switch tube, a second switch tube, at least one transformer and a plurality of rectification output circuits. The transformer comprises a primary coil and a plurality of secondary coils, wherein after passing through the rectification output circuit, a voltage is output by any one of the secondary coils and used for driving one of an A-phase bridge arm, a B-phase bridge arm, a C-phase bridge arm and a chopping bridge arm. In the power supply circuit, by means of adding a first-stage topological circuit to a primary side, the voltage stabilization precision of an output voltage is improved; and by means of sharing one transformer primary power source, the number of devices, such as transformer primary power source chips and MOS transistors, is reduced. Therefore, the cost is reduced, and the power density and reliability of a driving board are also improved.
Inventors:
QI YU (CN)
LIU BIN (CN)
DOU ZECHUN (CN)
XIE YUECHENG (CN)
SUN KANGKANG (CN)
CHEN YANPING (CN)
XIN LANYUAN (CN)
LIU BIN (CN)
DOU ZECHUN (CN)
XIE YUECHENG (CN)
SUN KANGKANG (CN)
CHEN YANPING (CN)
XIN LANYUAN (CN)
Application Number:
PCT/CN2022/128221
Publication Date:
May 02, 2024
Filing Date:
October 28, 2022
Export Citation:
Assignee:
CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RES INSTITUTE CO LTD (CN)
International Classes:
H02M1/088; H02M3/335
Foreign References:
| CN102292904A | 2011-12-21 | |||
| CN214412606U | 2021-10-15 | |||
| CN208508784U | 2019-02-15 | |||
| JP2013005461A | 2013-01-07 |
Other References:
KONG WEI-GONG: "Research and Design of Inverter Power Supply Based on IGBT", CONTROL ENGINEERING OF CHINA, 邢台职业技术学院 电气工程系,河北 邢台,054035, CN, vol. 25, no. 5, 20 May 2018 (2018-05-20), CN, pages 765 - 769, XP093162264, ISSN: 1671-7848, DOI: 10.14107/j.cnki.kzgc.14D2.0031
Attorney, Agent or Firm:
BEIJING FORESTSONG PATENT AGENCY CO., LTD. (CN)
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