On the effects of voltage loop in paralleled converters under master-slave current sharing

Yuehui Huang, Chi Kong Tse

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper studies the effects of the presence of voltage loops in parallel connected buck switching converters under master-slave current sharing scheme. The system employs a typical proportional-integral (PI) controller for regulation. Comparisons are made for the cases where the slave modules are controlled with and without a voltage loop. Generally, we find that the voltage loop in the slave is helpful in widening the stability range though it is theoretically redundant for the purpose of controlling the output voltage in the small-signal sense. Such a loop provides stable current reference for the slave modules. Effectively, each slave module is under current-mode control by virtue of the current sharing loop, making it a current source. Simulation results under different control configurations are presented to demonstrate the phenomenon.
Original languageEnglish
Title of host publicationConference Proceedings - IPEMC 2006
Subtitle of host publicationCES/IEEE 5th International Power Electronics and Motion Control Conference
Pages1517-1521
Number of pages5
Volume3
DOIs
Publication statusPublished - 1 Dec 2007
EventIPEMC 2006: CES/IEEE 5th International Power Electronics and Motion Control Conference - Shanghai, China
Duration: 14 Aug 200616 Aug 2006

Conference

ConferenceIPEMC 2006: CES/IEEE 5th International Power Electronics and Motion Control Conference
Country/TerritoryChina
CityShanghai
Period14/08/0616/08/06

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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