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A Methodology for Studying Aluminum Electrolytic Capacitors Wear-out in Automotive Cases
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| Author(s) |
Romain COUSSEAU, Nicolas PATIN, Eric MONMASSON, Lahoucine IDKHAJINE |
| Abstract |
Electrolytic aluminum capacitors used in electric drive for automotive are deemed to be the weakest components of static power converters. A lot of studies have been made to estimate their aging but only for a nominal point. This paper presents a specific operation cycle implementation to study the impact of a variable and more realistic thermal cycling. Moreover, an improvement of the classical electrical model for an electrolytic capacitor is proposed by adding a diffusion-relative element called “anomalous diffusion”. Experimental results show the interest of this element for an impedance-fitting. Finally, thermal measurements validate thermal cycling simulations. |
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| Filename: | 0167-epe2013-full-12351282.pdf |
| Filesize: | 645 KB |
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| Type |
Members Only |
| Date |
Last modified 2014-02-09 by System |
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