NDLI: A decision system for electrolytic capacitors diagnosis

Content Provider	IEEE Xplore Digital Library
Author	Ondel, O. Boutleux, E. Venet, P.
Copyright Year	2004
Description	Author affiliation: Centre de Genie electrique de Lyon, Ecole Centrale de Lyon, France (Ondel, O.; Boutleux, E.)
Abstract	Electrolytic filter capacitors are frequently responsible for static converters breakdowns. The rise of temperature within capacitor is the most significant factor upon ageing and so lifespan. To predict the ageing of the capacitor, a method of predictive maintenance has been developed. It consists in monitoring the voltage ripple of the capacitor. This ripple is the best indicator of its worn state. It is function of parameters such as input voltage, output current and ambient temperature. A reference system taking into account all these parameters is determined for sound capacitors. We deducted that the dispersion of input voltage had a weak influence upon voltage ripple compared to other parameters such as output current and ambient temperature. And precisely the temperature is being an influent parameter in the diagnosis, measurement must be very relevant. That is why we measured the internal temperature of capacitor which takes into account the ambient temperature but also the internal heating of capacitor. This measurement is done in an environment not confined for not which is distorted. We then checked the relevance of our modifications by comparing our results with the actual values of the state of capacitors deduced using a bridge RLC.
Sponsorship	IEEE Power Electon. Soc
Starting Page	4360
Ending Page	4364
File Size	381960
Page Count	5
File Format	PDF
ISBN	0780383990
ISSN	02759306
DOI	10.1109/PESC.2004.1354771
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitors Voltage Distortion measurement Aging Temperature measurement Filters Electric breakdown Predictive maintenance Monitoring Heating
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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