Approach to realize higher power PWM AC controller

Prasad N. Enjeti, Sewan Choi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

63 Scopus citations

Abstract

AC controllers are widely used in industry in many applications. Recent research has shown that PWM operation of ac controllers offers high performance characteristics. However, PWM controlled ac controllers are plagued with difficulties to commutate inductive load current from one bi-directional switch to another due to finite switch on/off times. This paper proposes a four step switching strategy for repeated on/off operation of bi-directional switches in an ac controller. The proposed approach permits safe transition of inductive load current at all power factors from one bi-directional switch to another even in the presence of source side stray inductance. Results from an experimental proto-type ac controller coupled to an inductive load are also discussed.

Original languageEnglish
Title of host publicationConference Procedings - IEEE Applied Power Electronics Conference and Exposition - APEC
PublisherPubl by IEEE
Pages323-327
Number of pages5
ISBN (Print)0780309839
StatePublished - 1993
Event8th Annual Applied Power Electronic Conference and Exposition - APEC '93 - San Diego, CA, USA
Duration: 7 Mar 199311 Mar 1993

Publication series

NameConference Procedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference8th Annual Applied Power Electronic Conference and Exposition - APEC '93
CitySan Diego, CA, USA
Period7/03/9311/03/93

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