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Optimal injection of harmonics in circulating currents of modular multilevel converters for capacitor voltage ripple minimization

  • R. Picas
  • , J. Pou
  • , S. Ceballos
  • , J. Zaragoza
  • , G. Konstantinou
  • , V. G. Agelidis

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

This paper proposes an algorithm to calculate the optimal amplitude and phase of the harmonic current components that can be injected in the circulating currents of a modular multilevel converter (MMC) to minimize the capacitor voltage fluctuations. An optimal second harmonic component and an optimal set of second and fourth harmonic components are proposed. Simulation results are obtained in MATLAB/Simulink environment to study the effectiveness of the calculated optimal currents. Selected experimental results have been obtained from an MMC laboratory prototype, testing the effects of the circulating currents. The reported results demonstrate the effectiveness of using a fourth harmonic component in the circulating current, which improves the effect of the second harmonic on reducing the capacitor voltage fluctuations. © 2013 IEEE.
Original languageEnglish
Title of host publication2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
Pages318-324
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013 - Melbourne, VIC, Australia
Duration: 3 Jun 20136 Jun 2013

Publication series

Name2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013

Conference

Conference2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
PlaceAustralia
CityMelbourne, VIC
Period3/06/136/06/13

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