Finite element analysis of saturation effects in a squirrel cage electrical machine

Abstract

Presents a method for the finite element (FE) analysis of saturation effects in a squirrel‐ cage electrical machine. The proposed mathematical model includes the FE equations of the electromagnetic field, the equations which define the connection of windings, and the mechanical equation. Applies an approach based on a simultaneous solution of these equations, paying special attention to the movement simulation. Applies the time‐stepping method with a fixed grid, independent of the rotar position. In the method the motional effects are simulated by trigonometric interpolation of the results for the previous time step.

Finite element analysis of the asynchronous torque in LSPMSM with non-symmetrical squirrel cage winding

“…A complete mathematical model of studied machines should include not only the electromagnetic field equations but also the circuit equations that describe the winding connection and the proper technique of squirrel cage end connections representation. For the stator region the FE and circuit equations can be written in the following compact form [9]:…”

Orthogonal transformation of moving grid model into fixed grid model in the finite element analysis of induction machines

“…when, for each band, the reluctivity of the equidistant elements is identical. It is interesting to notice that the presented transformation gives the FG model (for time-steeping method) similar to the model proposed by Demenko and Nowak (1996).…”

“…The results are presented in the work of Demenko and Nowak (1996). The authors applied also the equivalent MG time-stepping model.…”

“…The model proposed by Demenko and Nowak (1996) has been obtained by the trigonometric interpolation of the field distribution for the successive time steps.…”

Computation of Wound Rotor Induction Machines Based on Coupled Finite Elements and Circuit Equation Under a First Space Harmonic Approximation

“…Unfortunately, such an analysis is very costly in terms of computation time especially when only steady state performances, under sinusoidal excitation, are needed. An interesting alternative is to use a fixed-mesh method of movement simulation [3]. This technique doesn't consider the teeth permeance variation due to the movement.…”