Self-adjusting input current ripple cancellation of coupled parallel connected hysteresis-controlled boost power factor correctors

Johann W. Kolar, Girish R. Kamath, Ned Mohan, Franz C. Zach

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

62 Scopus citations

Abstract

As this paper shows, the magnetic coupling of the inductances of two hysteresis-controlled single-phase AC-to-DC boost power converters connected in parallel leads in connection with a delayed switching of the power transistors to a self-adjusting staggered switching of the partial systems. Thereby, a significant reduction of the ripple of the resulting mains current as compared to the uncoupled case is obtained. Based on the analytical description of the current shapes within a pulse period the dependency on the circuit parameters of the occurring phase displacement of the switching functions of the partial systems is calculated. Furthermore, the effect of an unsymmetry of the power converters on the system behavior is analyzed and the automatic adjustment of the phase shift within a mains period is investigated by digital simulation. The theoretical considerations are verified by measurements on a laboratory model. Finally, the possibility of a substitution of the magnetic coupling of the input inductances of the partial systems by a coupling of the current controls of the power converters is discussed.

Original languageEnglish (US)
Title of host publicationProceedings of PESC 1995 - Power Electronics Specialist Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages164-173
Number of pages10
ISBN (Electronic)0780327306
DOIs
StatePublished - 1995
Event26th Annual IEEE Power Electronics Specialists Conference, PESC 1995 - Atlanta, United States
Duration: Jun 18 1995Jun 22 1995

Publication series

NamePESC Record - IEEE Annual Power Electronics Specialists Conference
Volume1
ISSN (Print)0275-9306

Other

Other26th Annual IEEE Power Electronics Specialists Conference, PESC 1995
CountryUnited States
CityAtlanta
Period6/18/956/22/95

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