High Power Density Design of Power Electronic Interrupter in Hybrid DC Circuit Breaker

Jian Liu, L. Ravi, D. Dong, R. Burgos, C. Buttay, S. Schmalz
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引用次数: 6

Abstract

Circuit protection is a key enabler for future medium-voltage direct-current (MVDC) distribution systems. Hybrid dc circuit breaker (HCB) offers low conduction losses and reasonably fast response times, but suffers from large size. In this paper, a high power density power electronic interrupter design is introduced for the HCB. The device selection and trade-off analysis of voltage clamping circuit are investigated. A small sized module with two parallel 1.7 kV discrete IGBTs are selected as main switches. The RC snubber and MOV are carefully designed to guarantee no tail current bump and sufficient turn-off voltage margin. Experimental results at 12 kV and 1 kA are provided to verify the operation of the prototype.
混合直流断路器中电力电子灭流器的高功率密度设计
电路保护是未来中压直流(MVDC)配电系统的关键实现因素。混合式直流断路器(HCB)具有传导损耗低、响应速度快的特点,但其体积较大。本文介绍了一种用于HCB的高功率密度电力电子灭弧器的设计。研究了电压箝位电路的器件选择和权衡分析。采用两个并联的1.7 kV分立igbt作为主开关。RC缓冲器和MOV经过精心设计,以保证无尾电流颠簸和足够的关断电压裕度。给出了在12 kV和1 kA下的实验结果,验证了样机的运行。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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