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Performance and Reliability of High Energy Capacitors in Inverters and DC/DC Converters

[+] Author Affiliations
Dimosthenis C. Katsis

Athena Energy Corp., Bowie, MD

Paper No. IMECE2009-12178, pp. 69-73; 5 pages
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 5: Electronics and Photonics
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4378-9 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME


Emerging alternative energy systems for solar and wind are growing the demand for reliable capacitor technology. Manufacturers presently base the lifetime and reliability of their capacitors on operating temperature, ripple currents, and ambient conditions. Designers of PV inverter systems used are finding that film capacitors are emphasized for their lifetime expectations. This is especially true when compared to aluminum electrolytic capacitors. This paper presents a reliability estimate based on the core temperature of a representative film capacitor. Curves showing the performance of this component in a ripple test fixture will be presented as a reliability estimate.

Copyright © 2009 by ASME
Topics: Reliability



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