非再生三电平升压整流器故障模式分析及保护

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI:10.1109/APEC.2009.4802928

R. Lai, Fred Wang, F. Luo, R. Burgos, D. Boroyevich

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引用次数: 6

摘要

本文提出了一种新的非再生型三电平升压整流器(维也纳型整流器)故障类型，即直流链路倍压故障。在这种故障模式下，当变换器中性点路径中的任何交流开关短路时，直流链路电容器上的电压将翻倍，这是三电平中性点箝位拓扑的独特行为。针对这一问题，本文提出了电压箝位保护和电流分断保护两种保护方法，并进行了讨论和分析。研究了交流电感对电压倍增现象的影响，为保护方案的选择提供了指导。通过仿真和实验结果对该失效模式和电流分断保护方案进行了充分的分析和验证。

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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Failure Mode Analysis and Protection of Non-Regenerative Three-level Boost Rectifier

This paper identifies a new fault type of non-regenerative three-level boost rectifiers (Vienna-type rectifiers), namely the dc-link voltage-doubling fault. Under this failure mode, the voltage across the dc-link capacitors is doubled when any of the ac switches in the neutral path of the converter is shorted, a unique behavior of three-level neutral-point clamped topologies. Addressing this, two types of protection methods are proposed, discussed and analyzed in this paper, the voltage clamping and the current breaking protection schemes. The impact of the ac inductors on the voltage-doubling phenomenon is studied carefully, and a guideline for the protection scheme selection is provided. This failure mode and the current breaking protection scheme are fully analyzed and verified by simulation and experimental results.

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2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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