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

Dan M. Ionel; Mircea Popescu; Stephen J. Dellinger; T. J.E. Miller; Robert J. Heideman; Malcolm I. McGilp

doi:10.1109/TIA.2006.872941

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

Dan M. Ionel, Mircea Popescu, Stephen J. Dellinger, T. J.E. Miller, Robert J. Heideman, Malcolm I. McGilp

Research output: Contribution to journal › Article › peer-review

233 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	658-667
Number of pages	10
Journal	IEEE Transactions on Industry Applications
Volume	42
Issue number	3
DOIs	https://doi.org/10.1109/TIA.2006.872941
State	Published - May 2006

Keywords

Brushless permanent-magnet (PM) motor
Core loss
Electric machine
Epstein test
Finite-element analysis (FEA)
Induction motor
Iron loss
Laminated steel

ASJC Scopus subject areas

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

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10.1109/TIA.2006.872941

Cite this

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title = "On the variation with flux and frequency of the core loss coefficients in electrical machines",

abstract = "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.",

keywords = "Brushless permanent-magnet (PM) motor, Core loss, Electric machine, Epstein test, Finite-element analysis (FEA), Induction motor, Iron loss, Laminated steel",

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language = "English",

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T1 - On the variation with flux and frequency of the core loss coefficients in electrical machines

AU - Ionel, Dan M.

AU - Popescu, Mircea

AU - Dellinger, Stephen J.

AU - Miller, T. J.E.

AU - Heideman, Robert J.

AU - McGilp, Malcolm I.

PY - 2006/5

Y1 - 2006/5

N2 - 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.

AB - 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.

KW - Brushless permanent-magnet (PM) motor

KW - Core loss

KW - Electric machine

KW - Epstein test

KW - Finite-element analysis (FEA)

KW - Induction motor

KW - Iron loss

KW - Laminated steel

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

Abstract

Keywords

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