Experimental evaluation of capacitors for power buffering in single-phase power converters

Christopher B. Barth, Intae Moon, Yutian Lei, Shibin Qin, Robert Carl Nikolai Pilawa Podgurski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Single-phase inverters and rectifiers require the use of an energy buffer to absorb the twice-line-frequency power ripple present on the AC side. Historically this challenge has been addressed by the use of large electrolytic capacitors. However reliability constraints and the need for improved system performance have motivated designers to seek other capacitor technologies such as ceramic and metal film which are frequently used in conjunction with active filtering converters to reduce the volume of required capacitance. Active filtering converters cycle the capacitor voltage over a wide voltage range while maintaining a constant DC bus voltage. This large-swing operation is very different from that of most other filtering applications, and the data sheet parameters available for commercial capacitors may be ineffective or require special care for calculating characteristics such as efficiency and energy storage capability. This work presents an experimental setup for evaluating capacitor performance under a large voltage swing. Energy storage data for several capacitors in the 50 V to 450 V range from several manufacturers is included. The approach and findings of this paper can serve as an aid to power electronics designers for the selection and evaluation of capacitors in energy buffering applications.

Original languageEnglish (US)
Title of host publication2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6269-6276
Number of pages8
ISBN (Electronic)9781467371506
DOIs
StatePublished - Oct 27 2015
Event7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015 - Montreal, Canada
Duration: Sep 20 2015Sep 24 2015

Publication series

Name2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015

Other

Other7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015
CountryCanada
CityMontreal
Period9/20/159/24/15

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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