Analytical calculation of rotor magnet eddy-current losses for high speed IPMSM

For high-speed machines applications, eddy-current losses in the interior permanent magnet of synchronous machine (IPMSM) form a portion of the total losses which can be significant. Indeed, the magnets are exposed to the harmonic fields which rotate with respect to the rotor. The induced losses in...

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Bibliographic Details
Published inThe XIX International Conference on Electrical Machines - ICEM 2010 pp. 1 - 6
Main Authors Bettayeb, A, Jannot, X, Vannier, J
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2010
Subjects
analytical modeling
Eddy-currents
finite-element method
Harmonic analysis
High speed
Magnetic analysis
Magnetic flux leakage
Magnetic losses
Permanent magnet machines
power losses
Skin effect
Stators
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Summary:For high-speed machines applications, eddy-current losses in the interior permanent magnet of synchronous machine (IPMSM) form a portion of the total losses which can be significant. Indeed, the magnets are exposed to the harmonic fields which rotate with respect to the rotor. The induced losses in the magnets provoke temperature arising that must be limited to avoid the risk of demagnetization. The study carries out a prediction of eddy current losses in PM where the skin effect is considered. A complete analytical model is presented and compared to 3D Finite Element (FE) harmonic computations. The results given by the proposed model are in agreement with the FEA results for local electromagnetic quantities and loss calculations. This approach can be useful for losses estimation in magnets when designing machines by analytical method.
ISBN:9781424441747
1424441749
DOI:10.1109/ICELMACH.2010.5608257