Current equalizing for a multi-modular current source converter

Li Jun, Dehong Xu, Ka Wai Eric Cheng

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

5 Citations (Scopus)


Phase-shifted SPWM technique is adopted to control a directly-paralleled multi-modular current source converter for Super-conducting Magnetic Energy Storage System (SMES) to reach high power and low harmonics. The phase-shifting of the carriers results a serious current unbalance between each converter modules when the high power switch devices work on low switch rate. This paper analyses the problems of the classic current balancing methods and introduces the carrier-swapping method into phase-shifted SPWM technique, to eliminate such current unbalance in a multi-modular current source converter without adjusting the amplitude and phase angle of the modulation waveforms of each module respectively. Experimental results are given to prove the effectiveness of current equalization provided by the carrier-swapping method.
Original languageEnglish
Title of host publicationConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Number of pages5
Publication statusPublished - 1 Dec 2005
Event20th Annual IEEEApplied Power ElectronicsConference and Exposition, APEC 2005 - Austin, TX, United States
Duration: 6 Mar 200510 Mar 2005


Conference20th Annual IEEEApplied Power ElectronicsConference and Exposition, APEC 2005
Country/TerritoryUnited States
CityAustin, TX

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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