Evaluation of Iron Loss Models in Electrical Machines
2019
In this paper, more than 10 different iron loss models are experimentally evaluated, which cover alternating and rotating fields, the influence of temperature, dc bias flux density and distorted flux density due to pulsewidth modulation inverter. Iron loss models considering alternating fields are evaluated by the measured results of a lamination ring specimen. The iron loss model considering the rotating field and the nonsinusoidal field are evaluated by the measured results of an electrical machine under different conditions. The iron loss models considering temperature influence are also evaluated by thermal analyses and experimental tests. Based on these comprehensive investigations, the iron loss models having the best prediction accuracy for each case are identified.
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