Additional Losses of Electrical Machines under Torsional Vibration

A. Arkkio, S. Cederstrom, H. Asad Ali Awan, S. E. Saarakkala, T. P. Holopainen

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)
269 Downloads (Pure)


Electric drive trains have a torsional rigid-body vibration mode at a small, non-zero frequency. If an excitation occurs close to this frequency, the vibration amplitude may grow large and the electrical machine may suffer from significant additional losses. Standards set constraints on the oscillating torque in the shaft coupling and on the harmonics of line current. They indirectly limit the vibration amplitude and losses of the machines.

Original languageEnglish
Pages (from-to)245-251
Number of pages8
JournalIEEE Transactions on Energy Conversion
Issue number1
Publication statusPublished - 2018
MoE publication typeA1 Journal article-refereed


  • additional losses
  • electrical machines
  • finite element analysis
  • temperature rise
  • torsional vibration


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