Title:
RELIABLE PARALLEL CONTROL SYSTEM AND METHOD FOR EFFICIENT BIDIRECTIONAL POWER CONVERSION MODULE
Document Type and Number:
WIPO Patent Application WO/2023/197547
Kind Code:
A1
Abstract:
The present disclosure relates to the technical field of advanced control of high-performance power conversion systems, and in particular provides a reliable parallel control system and method for an efficient bidirectional power conversion module. The system comprises a bipolar current space vector modulation module, an input current equalization backstepping control module and an output voltage equalization backstepping control module. The input current equalization backstepping control module comprises an output current outer loop backstepping controller, an output voltage middle loop backstepping control unit and an input current inner loop backstepping control unit. The output voltage equalization backstepping control module comprises an output voltage outer loop backstepping control unit and an input current inner loop backstepping control unit. The current stress and the voltage stress of a switch tube are greatly reduced, and modular design is adopted to facilitate capacity expansion. From the perspective of the law of conservation of energy, output voltage equalization and input current equalization are taken as entry points, and a power equalization backstepping control method is used to achieve inter-module power equalization, thereby effectively improving the safety and reliability of the parallel system.
Inventors:
ZHANG CHENGHUI (CN)
SONG JINQIU (CN)
DUAN BIN (CN)
WU GAOTONG (CN)
SONG JINQIU (CN)
DUAN BIN (CN)
WU GAOTONG (CN)
Application Number:
PCT/CN2022/125718
Publication Date:
October 19, 2023
Filing Date:
October 17, 2022
Export Citation:
Assignee:
UNIV SHANDONG (CN)
International Classes:
H02M7/797; H02M1/14
Foreign References:
| CN114785181A | 2022-07-22 | |||
| CN113141121A | 2021-07-20 | |||
| CN111431422A | 2020-07-17 | |||
| CN113612398A | 2021-11-05 | |||
| CN102013826A | 2011-04-13 | |||
| US20100213767A1 | 2010-08-26 |
Other References:
RONGRONG ZHANG, XINBO RUAN, WU CHEN: "Control Strategy for Input-Parallel Output-Series Converter Systems", TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY, vol. 23, no. 8, 26 August 2008 (2008-08-26), pages 86 - 93, XP093098744, DOI: 10.19595/j.cnki.1000-6753.tces.2008.08.015
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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