Subharmonics generated by space vector modulation in ultrahigh speed drives

Peter Stumpf, Rafael K. Jardan, Istvan Nagy

Research output: Contribution to journalArticle

36 Citations (Scopus)


Failures of ultrahigh speed induction machines (USIM) experienced in the laboratory initiated the current study. The USIM was supplied by voltage source converter controlled by space vector modulation (SVM) to generate electric power by utilizing renewable energy resources. Three different sampling techniques, regular sampled, naturally sampled, and oversampled are investigated by simulations and tests. It was found that subharmonic flux with considerable amplitudes can be generated in USIM. It can cause high level of additional winding copper losses in the rotor that could lead to damage of the machine. The investigation is focused on the generation of subharmonics.

Original languageEnglish
Article number5759772
Pages (from-to)1029-1037
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Issue number2
Publication statusPublished - Feb 1 2012


  • Harmonic analysis
  • high speed drives
  • space vector modulation (SVM)
  • subharmonics

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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