Title:
ISOLATED MATRIX CONVERTER AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/226348
Kind Code:
A1
Abstract:
Disclosed in the present application are an isolated matrix converter and a control method. The converter comprises bidirectional switch modules, a transformer, a resonant inductor, a resonant capacitor and bridge arm capacitors, a bidirectional switch module and a bridge arm capacitor being connected in series to form a bridge arm of the converter, each bridge arm of the converter comprising at least one bidirectional switch module, the primary winding of the transformer being connected to the resonant inductor and the resonant capacitor in series and then connected to two ends of the bridge arms of the converter, each bidirectional switch module comprising a clamping capacitor and bidirectional switch units, the bidirectional switch units forming two bridge arms of the module, two ends of the clamping capacitor being connected to two ends of the two bridge arms of the module, the clamping capacitor and the two upper bridge arms or two lower bridge arms of the two bridge arms forming a clamping absorption circuit, each bidirectional switch unit comprising at least two controllable switching transistors, and the clamping capacitor inhibiting a voltage spike generated during an action of the switching transistors in the bidirectional switch module. Therefore, the switching transistors are protected and the safety of the whole converter is further protected, improving the reliability of the whole converter.
Inventors:
ZHUANG JIACAI (CN)
XU JUN (CN)
CAI GUOQING (CN)
LIU WEI (CN)
XU JUN (CN)
CAI GUOQING (CN)
LIU WEI (CN)
Application Number:
PCT/CN2022/135138
Publication Date:
November 30, 2023
Filing Date:
November 29, 2022
Export Citation:
Assignee:
SUNGROW POWER SUPPLY CO LTD (CN)
International Classes:
H02M7/797; H02J7/06; H02M1/32; H02M5/10; H02M7/00
Foreign References:
| CN114826013A | 2022-07-29 | |||
| CN103501122A | 2014-01-08 | |||
| CN114400909A | 2022-04-26 | |||
| CN106887945A | 2017-06-23 | |||
| CN101902129A | 2010-12-01 | |||
| US6038142A | 2000-03-14 |
Other References:
HUANG YIYI; BEN HONGQI; WANG WEIQI; ZHOU DI; QI CHAO: "Active Clamp Circuit Applying to Absorbing Voltage Spikes in Single-Stage Full-Bridge PFC Converter", TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY, vol. 33, no. 04, 25 February 2018 (2018-02-25), pages 845 - 855, XP009550853, ISSN: 1000-6753, DOI: 10.19595/j.cnki.1000-6753.tces.160866
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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