Computation of Magnetic Losses in Canned High-Field PMSM Using Finite Element Method

Al-Din, M. S. N.; Al-Mashakbeh, A. S.
February 2010
European Journal of Scientific Research;Feb2010, Vol. 40 Issue 3, p341
Academic Journal
Magnetic losses in a canned high field permanent magnets synchronous motor are computed using the finite element method. The hysteresis losses in the stator core are computed from the time and spatial variation of the flux density components in all the ferromagnetic elements of the stator. Fourier series of elliptical harmonic flux density vectors for each element is then used to evaluate the total losses per unit weight. On the other hand, the eddy current losses in both the stator and rotor cores were evaluated from the computation of the time varying magnetic vector potential in each node. This variation is then used to compute the eddy current density and its related loss in each element. The time variation is simulated by solving a number of magneto-static FE models, where efficient techniques were suggested and used to enhance and speed up the modeling and the solution of the models.


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