Analysis of ripple current of an electrolytic capacitor in power factor controller

Toshiaki Kurachi, Masahito Shoyama, Tamotsu Ninomiya

Research output: Contribution to conferencePaperpeer-review

17 Citations (Scopus)

Abstract

A large electrolytic capacitor is usually used at the output terminal of power factor control circuits to suppress the high-frequency switching ripple voltage as well as the low-frequency ripple voltage. Due to the equivalent series resistance of the electrolytic capacitor, the capacitor current causes power loss which increases its temperature and may shorten its life time. So, it is important to estimate the effective value of the capacitor current accurately. This paper presents a detailed analysis of the ripple current of an electrolytic capacitor in the boost-type power factor control circuit. The ripple current is divided into two components, namely the low-frequency and the high-frequency components. The root-mean-square value of the capacitor current is derived for both components. The analytical results are confirmed by experiments.

Original languageEnglish
Pages48-53
Number of pages6
Publication statusPublished - Jan 1 1995
EventProceedings of the 1995 International Conference on Power Electronics and Drive Systems. Part 2 (of 2) - Singapore, Singapore
Duration: Feb 21 1995Feb 24 1995

Other

OtherProceedings of the 1995 International Conference on Power Electronics and Drive Systems. Part 2 (of 2)
CitySingapore, Singapore
Period2/21/952/24/95

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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