Naslov
The application of the finite element method in design of electric motors

Autori
Haznadar, Zijad ; Štih, Željko ; Berberović, Sead ; Manenica, Goran

Izvornik
Applied Computational Electromagnetics Society Journal (1054-4887) 9 (1994), 2; 30-36

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Finite element method; design; electric motor

Sažetak
Some problems arising in the application of the finite element method in design of electric motors are discussed in this paper. Electric motors are always part of a system and their behaviour within the system, which is characterized by integral parameters (torques and reactances), should be known at the design stage. Computation of these parameters from a finite element magnetic field solution is described here. The computation of torque/angle characteristics from finite element field solution by application of two basic approaches: global virtual work method and cubic spline interpolation technique ; and Maxwell stress tenser integration, is described. The applicability of both approaches is illustrated by computation of the torque in a switched reluctance motor and the advantages of virtual work approach are emphasised. To avoid finite element mesh rotation an iterative process was implemented in which only the fundamental harmonic of the lumped stator winding distribution is taken into consideration instead of the three-phase winding excitation. The direct and quadrature reactances are computed from the finite element magnetic field solution utilizing flux linkage and stored energy approaches. The procedure is illustrated by computation of the reactances of a permanent magnet synchronous electric motor.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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