Research on multi-outputs high-voltage isolated power supply for solid state switches

被引：0
作者：
Fang C.-E. [1 ]
Xue T. [1 ]
Fu X.-H. [1 ]
Li W. [1 ]
Chen J.-P. [2 ]
机构：
[1] School of Electrical Engineering and Electronic Information, Xihua University, Chengdu
[2] Chengdu Xuguang Electronic Co. Ltd., Chengdu
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 06期
关键词：
Current bus; DC circuit breaker; High-voltage isolation; LCL-T resonant tank; Multiple outputs power supply; Quality factor;
D O I：
10.15938/j.emc.2021.06.015
中图分类号：
学科分类号：
摘要：
A multiple outputs high-voltage isolated power supply for solid-state switches used in HVDC circuit breakers is studied. The power supply adopts LCL-T resonant tank to obtain the constant current source, a high voltage cable is built as current bus for electrical isolation, the power is picked up from current bus by magnetic rings, and the aim of multiple outputs is realized. First, the structure and characteristics of the power supply were presented in this paper, and each constituent part was analyzed. Secondly, the operating principle and output characteristics of the LCL-T resonant tank were analyzed, the quality factor Q of the circuit topology was optimized and the parameters of the prototype wrere given. Moreover, the prototype combined the characteristics of LCL-T resonant tank as a constant current source and magnetic rings picked up power from current bus. Finally, a prototype of 12 outputs and rated output power of 5 W per channel was designed, built and tested. The experimental results show that the prototype has advantages such as simple structure, flexible extensibility, zero voltage switching (ZVS), low total harmonic distortion of the current bus and stable output dc voltage. The prototype meets the driving requirements of various solid-state switch devices. © 2021, Harbin University of Science and Technology Publication. All right reserved.
引用
收藏
页码：128 / 136
页数：8
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