Calculation of eddy current losses in permanent magnets of synchronous machines

Eddy current losses in rotor permanent magnets (PM) of synchronous machines with concentrated windings are calculated for sinusoidal stator currents. Three different calculation methods are compared in the Finite-Element environment: 1) analytical post processing of FE magneto-static data with multi...

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Bibliographic Details
Main Authors: Deak, C., Petrovic, L., Binder, A., Mirzaei, M., Irimie, D., Funieru, B.
Format: Conference Proceeding
Language:English
Subjects:
Concentrated windings
eddy current losses
Eddy currents
finite-element calculations
Magnetic flux
Magnetic flux leakage
Magnetic losses
permanent magnets
Rotors
Stators
Synchronous motors
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Summary:Eddy current losses in rotor permanent magnets (PM) of synchronous machines with concentrated windings are calculated for sinusoidal stator currents. Three different calculation methods are compared in the Finite-Element environment: 1) analytical post processing of FE magneto-static data with multi-move and eddy currents calculated from vector potential, 2) direct FE magneto-static method, 3) time stepping with a FE program. From thermal measurements performed on existing prototype motors the losses in magnets are compared based on the temperature rises in the magnets at adiabatic heating.
DOI:10.1109/SPEEDHAM.2008.4581164