A general model to predict the iron losses in PWM inverter-fed induction motors

Aldo Boglietti, Andrea Cavagnino, Dan M. Ionel, Mircea Popescu, David A. Staton, Silvio Vaschetto

Research output: Contribution to journalArticlepeer-review

130 Scopus citations


This paper presents an accurate and efficient method for predicting the iron losses in pulsewidth modulation (PWM) inverter-fed induction motors. The method was initially proposed for the prediction of iron losses in a nonoriented soft magnetic material with the same supply conditions. The proposed method requires the separation of the iron losses in the hysteresis and eddy-current components and the average rectified and rms of the PWM voltage values. Starting from the iron losses measured with a sinusoidal supply and the PWM waveform characteristics, a fast and reliable prediction of the iron losses in the motor with the new voltage supply can be obtained. The proposed method has been proved on an induction-motor prototype capable of providing good accuracy in the iron-loss measurement. The comparison between the measured and predicted iron losses with the PWM supply has shown excellent agreement, confirming the validity of the method.

Original languageEnglish
Article number5523984
Pages (from-to)1882-1890
Number of pages9
JournalIEEE Transactions on Industry Applications
Issue number5
StatePublished - Sep 2010


  • Core loss
  • induction motors
  • iron losses
  • pulsewidth modulation (PWM) voltage

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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