Calculation of eddy current losses in permanent magnets of synchronous machines

Author

Deak, C. ; Petrovic, L. ; Binder, A. ; Mirzaei, M. ; Irimie, D. ; Funieru, B.

Author_Institution

Darmstadt Univ. of Technol., Darmstadt

fYear

2008

fDate

11-13 June 2008

Firstpage

26

Lastpage

31

Abstract

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.

Keywords

eddy current losses; finite element analysis; machine theory; permanent magnets; synchronous machines; FE magneto-static data; eddy current losses; finite-element environment; rotor permanent magnets; synchronous machines; thermal measurements; Eddy currents; Finite element methods; Iron; Loss measurement; Machine windings; Magnetic analysis; Magnetic losses; Permanent magnets; Stator windings; Synchronous machines; Concentrated windings; eddy current losses; finite-element calculations; permanent magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion, 2008. SPEEDAM 2008. International Symposium on

Conference_Location

Ischia

Print_ISBN

978-1-4244-1663-9

Electronic_ISBN

978-1-4244-1664-6

Type

conf

DOI

10.1109/SPEEDHAM.2008.4581164

Filename

4581164