Current balancing strategy for interleaved voltage source inverters

Josep Pou, Jordi Zaragoza, Gabriel Capella, Igor Gabiola, Salvador Ceballos, Eider Robles

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

The parallel connection of inverter legs is a way to increase the output currents and thus, the converter rated power. The connection is made by inductors and a critical issue is to achieve balanced currents among the legs. Circulating currents produce additional losses and stress to the power devices of the converter. Therefore, they should be controlled and minimized. An efficient technique to achieve such balance is presented in this paper. The proposed strategy does not include proportional-integral (PI) controllers and parameter tuning is not required. The exact control action to achieve current balance is straightforward calculated and applied. Simulation and experimental results are shown in this paper to verify the efficiency of the proposed balancing method.
Original languageEnglish
Pages (from-to)29-34
JournalEPE Journal (European Power Electronics and Drives Journal)
Volume21
Issue number1
DOIs
Publication statusPublished - Jan 2011
Externally publishedYes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

  • « Converter control»
  • «Current balance»
  • «Modulation strategies »
  • «Parallel legs»
  • «Pulsewidth modulation »

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