Title :
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
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;
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
DOI :
10.1109/SPEEDHAM.2008.4581164
