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In addition, the test achieves a 100% parametric fault coverage of the capacitor ratios defined by the SLB fault model for the Fleischer-Laker SC biquad.
Analysis showed that partial discharge properties are a critical indicator for capacitor failure.
It is shown herein that these defects in the windings of the capacitors have a wide range of electrical properties and the behavior of the capacitor in the test is strongly related to these properties.
Therefore, estimating these two parameters can provide a good indicator for a potential capacitor failure.
Besides, only one additional pad is needed for one additional capacitor under the test by this method, and it is the most efficient method for process characterization and monitoring.
This technique allows reliable prediction of capacitor life as compared to existing techniques.
The study results confirm the effectiveness of the proposed capacitor monitoring strategy.
Proceedings ArticleDOI
Rengui Lu, Guoliang Wu, Rui Ma, Chunbo Zhu 
18 Nov 2008
11 Citations
So state of charge of electric vehicle ultra-capacitor could be estimated accurately.

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