A prognosis case study for electrolytic capacitor degradation in DC-DC converters

Chetan S Kulkarni, Gautam Biswas, and Xenofon Koutsoukos
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Full Paper
phmc_09_56.pdf632.26 KBSeptember 17, 2009 - 6:10pm

This paper proposes a model based approach for prognosis of DC-DC power converters. We briefly review the prognosis process, and present an overview of different approaches that have been developed. We study the effects of capacitor degradation on DC-DC converter performance by developing a combination of a thermal model for ripple current effects and a physics of failure model of the thermal effects on capacitor degradation. The derived degradation model of the capacitor is reintroduced into the DC-DC converter model to study changes in the system performance using Monte Carlo methods. The simulation results observed under different conditions and experimental setups for model verification are discussed. The paper concludes with comments and future work to be done.

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Submission Keywords: 
applications: electronics
electronics PHM
Monte Carlo methods
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