Loss Function Modeling of Efficiency Maps of Electrical Machines

Amin Mahmoudi, Wen Soong, Gianmario Pellegrino, Eric Armando

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


This paper presents a novel approach in the modeling of efficiency maps for electrical machines. It is based on using the sum of terms in the form of kmnTmωn to represent the variation of the stator and rotor copper, iron, and magnet losses with torque and speed. The effect of each term on the shape of the efficiency map is explored. Analysis is performed on the calculated efficiency and loss maps of an induction, an interior permanent magnet, and a surface permanent magnet machine to demonstrate the validity of the approach.

Original languageEnglish
Article number7903710
Pages (from-to)4221-4231
Number of pages11
JournalIEEE Transactions on Industry Applications
Issue number5
Publication statusPublished - Sept 2017
Externally publishedYes


  • Efficiency map
  • electric machines
  • induction machines
  • loss modeling
  • permanent magnet (PM) machines


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