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Semi-physical parameter identification for an iron-loss formula allowing loss-separation

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3 Author(s)
Steentjes, S. ; Institute of Electrical Machines, RWTH Aachen University D-52056 Aachen, Schinkelstraße 4, Germany ; LeBmann, M. ; Hameyer, K.

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This paper presents a semi-physical parameter identification for a recently proposed enhanced iron-loss formula, the IEM-Formula. Measurements are performed on a standardized Epstein frame by the conventional field-metric method under sinusoidal magnetic flux densities up to high magnitudes and frequencies. Quasi-static losses are identified on the one hand by point-by-point dc-measurements using a flux-meter and on the other hand by extrapolating higher frequency measurements to dc magnetization using the statistical loss-separation theory (Jacobs etal, “Magnetic material optimization for hybrid vehicle PMSM drives,” in Inductica Conference, CD-Rom, Chicago/USA, 2009). Utilizing this material information, possibilities to identify the parameter of the IEM-Formula are analyzed. Along with this, the importance of excess losses in present-day non-grain oriented Fe-Si laminations is investigated. In conclusion, the calculated losses are compared to the measured losses.

Published in:

Journal of Applied Physics  (Volume:113 ,  Issue: 17 )

Date of Publication:

May 2013

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