Study and comparison of discontinuous modulation for modular multilevel converters in motor drive applications

Ricard Picas, Jordi Zaragoza*, Josep Pou, Salvador Ceballos, Georgios Konstantinou, Gabriel J. Capella

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Discontinuous modulation applied to modular multilevel converters is an effective method for reducing the capacitor voltage ripples. In this paper, the discontinuous modulation is adapted and used in a motor drive application. For proper operation of the converter, a new energy controller is presented, which is suitable for operation with nonsinusoidal reference signals. Experimental results comparing the discontinuous modulation with other techniques operating at low motor speeds are shown. The results demonstrate the effectiveness of the discontinuous modulation on reducing capacitor voltage ripples and power losses.

Original languageEnglish
Article number8396868
Pages (from-to)2376-2386
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Volume66
Issue number3
DOIs
Publication statusPublished - Mar 2019

Keywords

  • Discontinuous modulation
  • low-frequency operation
  • modular multilevel converter (MMC)
  • motor drive

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