桥式限流与动态电压恢复器融合设计及控制方法

doi:10.19595/j.cnki.1000-6753.tces.191088

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Abstract The traditional fault current limiter has a low utilization rate, and the dynamic voltage restorer is vulnerable to short-circuit current. Therefore, a topology combined with the bridge-type current limiting and dynamic voltage restorer fusion design is proposed, referred to as a multifunctional dynamic voltage restorer (MF-DVR). By multiplexing the DC side discharge branch as a current limiting branch and with the control of the series inverter, the short-circuit current can be effectively limited and the system equipment safety can be protected. The topology has two modes of operation: when the grid voltage temporarily rises and sags, it works in voltage compensation mode, similar to the traditional dynamic voltage restorer; when a short-circuit fault occurs on the load side, it works in short-circuit current limiting mode, similar to the traditional solid-state fault current limiter. The topology, working principle and control strategy are analyzed in detail. The proposed topology and control method, as well as the effectiveness of voltage compensation and short-circuit current limiting function, are verified by simulations of Simulink and experiments of RT-LAB hardware in the loop.

Key words： Voltage drop short-circuit fault dynamic voltage restorer solid-state fault current limiters mode switching functional multiplexing

Received: 26 August 2019

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TM464

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	Tu Chunming
	Li Qing
	Guo Qi
	Jiang Fei
	Gao Jiayuan

Cite this article:

Tu Chunming,Li Qing,Guo Qi等. Fusion Design and Control Method of Bridge Current Limiter and Dynamic Voltage Restorer[J]. Transactions of China Electrotechnical Society, 2020, 35(20): 4384-4396.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191088 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I20/4384

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