On the variation with flux and frequency of the core loss coefficients in electrical machines

被引：211

作者：

Ionel, Dan M. ^{[1
]}

Popescu, Mircea

Dellinger, Stephen J.

Miller, T. J. E.

Heideman, Robert J.

McGilp, Malcolm I.

机构：

[1] AO Smith Corp, Corp Technol Ctr, Milwaukee, WI 53226 USA

[2] Univ Glasgow, SPEED Lab, Dept Elect Engn, Glasgow G12 8LT, Lanark, Scotland

[3] AO Smith Corp, Elect Prod Co, Tipp City, OH 45371 USA

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2006年 / 42卷 / 03期

关键词：

brushless permanent-magnet (PM) motor; core loss; electric machine; Epstein test; finite-element analysis (FEA); induction motor; iron loss; laminated steel;

D O I：

10.1109/TIA.2006.872941

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A model of core losses, in which the hysteresis coefficients are variable with the frequency and induction (flux density) and the eddy-current and excess loss coefficients are variable only with the induction, is proposed. A procedure for identifying the model coefficients from multifrequency Epstein tests is described, and examples are provided for three typical grades of non-grain-oriented laminated steel suitable for electric motor manufacturing. Over a wide range of frequencies between 20-400 Hz and inductions from 0.05 to 2 T, the new model yielded much lower errors for the specific core losses than conventional models. The applicability of the model for electric machine analysis is also discussed, and examples from an interior permanent-magnet and an induction motor are included.

引用

页码：658 / 667

页数：10

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