The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2024
Filed:
Sep. 13, 2021
Chongqing Midea Air Conditioning Equipment Co., Ltd., Chongqing, CN;
Gd Midea Air-conditioning Equipment Co., Ltd., Foshan, CN;
Zhaobin Huang, Chongqing, CN;
Tan Long, Chongqing, CN;
Ming Zhao, Chongqing, CN;
Jianning Yang, Chongqing, CN;
Jinqing Xu, Chongqing, CN;
Xianjie Zeng, Chongqing, CN;
Zhaojing Huo, Chongqing, CN;
Xianshi Wen, Chongqing, CN;
CHONGQING MIDEA AIR CONDITIONING EQUIPMENT CO., LTD., Chongqing, CN;
GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Foshan, CN;
Abstract
A three-phase power supply conversion circuit includes rectifier, energy storage, direct-current load, and control modules. The rectifier module includes a three-phase rectifier bridge including three bridge arms connected in parallel to each other, and a bidirectional switch assembly including three bidirectional switches. One ends of the three bidirectional switches are connected to midpoints of the three bridge arms, respectively. The energy storage module is connected to a direct-current output end of the rectifier module and includes first and second capacitors connected in series to each other. Other ends of the three bidirectional switches are connected between the first and second capacitors. The control module is connected to the bidirectional switch assembly and configured to control the bidirectional switches according to phase voltages of a three-phase alternating-current power supply, to maintain a voltage between two ends of the first or second capacitor at a target voltage.