Computation of core losses in electrical machines using improved models for laminated steel

被引：219
|
作者：
Ionel, Dan M. [1 ]
Popescu, Mircea
McGilp, Malcolm I.
Miller, T. J. E.
Dellinger, Stephen J.
Heideman, Robert J.
机构：
[1] AO Smith Corp, Corp Technol Ctr, Milwaukee, WI 53224 USA
[2] Univ Glasgow, Dept Elect Engn, SPEED Lab, Glasgow G12 8LT, Lanark, Scotland
[3] Elect Prod Co, AO Smith Corp, Tipp City, OH 45371 USA
来源：
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2007年 / 43卷 / 06期
关键词：
brushless permanent-magnet (BLPM) motor; cold-rolled motor lamination steel; core loss; electric machine; Epstein test; finite-element analysis (FEA); interior permanent-magnet (IPM) motor; iron loss;
D O I：
10.1109/TIA.2007.908159
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two new models for specific power losses in cold-rolled motor lamination steel are described together with procedures for coefficient identification from standard multi-frequency Epstein or single sheet tests. The eddy-current and hysteresis loss coefficients of the improved models are dependent on induction (flux density) and/or frequency, and the errors are substantially lower than those of conventional models over a very wide range of sinusoidal excitation, from 20 Hz to 2 kHz and from 0.05 up to 2 T. The model that considers the coefficients to be variable, with the exception of the hysteresis loss power coefficient that has a constant value of 2, is superior in terms of applicability and phenomenological support. Also included are a comparative study of the material models on three samples of typical steel, mathematical formulations for the extension from the frequency to the time domain, and examples of validation from electrical machine studies.
引用
收藏
页码：1554 / 1564
页数：11
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