基于改进EMD算法的DC-DC变换器ESR估计方法

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI:10.1109/PHM.2012.6228949

Guohui Wang, Yong Guan, Jie Zhang, Lifeng Wu, Xueyuan Zheng, Wei Pan

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引用次数: 33

摘要

铝电解电容器通常用于DC-DC变换器中作为平滑电容器。根据统计数据，它们是DC-DC变换器中各种功率元件中最弱的。随着电解电容器运行时间的增加，其性能下降主要体现在电学参数上，主要是等效串联电阻(ESR)和电容。输出滤波电容失效的最佳指标是ESR的增加。变换器的输出纹波电压随ESR的增大而增大。通过电压纹波和电流纹波来监测电解电容的ESR变化，可以估计变换器的健康状态。

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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ESR estimation method for DC-DC converters based on improved EMD algorithm

Aluminum electrolytic capacitors are usually used in DC-DC converters as smoothing capacitors. According to the statistics data, they are the weakest among various power components in the DC-DC converter. With the increase of the running time, the performance degradation of electrolytic capacitors reflects in electrical parameters, mainly the Equivalent Series Resistance (ESR) and capacitance. The best indicator of the output filter capacitor failure is the increase of ESR. And the output ripple voltage of the converter increases with respect to ESR. Monitoring the ESR variation of the electrolytic capacitor, achieving by voltage and current ripple, can estimate the health state of the converter.

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Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing)

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