Abstract
This paper reports a new dynamic modeling method for switched reluctance motor (SRM) which can account for neighboring phase coupling effects. The dynamic model is developed using a few sets of finite element method (FEM)-computed phase flux linkage/current/position data under the condition of simultaneous excitation of two neighboring phases. The combination of piecewise Hermite cubic spline and Fourier series techniques is used to represent each FEM-calculated flux linkage data set. The methods to implement and to verify the dynamic model using simulation techniques are presented. The model is ready to be incorporated with various converter topologies and control strategies. It can provide valuable information for motor design evaluation and its controller design evaluation. The modeling method has been implemented using Saber circuit simulator for a 4-phase SRM driven by a split DC-link inverter. Dynamic simulation results have been obtained for two different SRM winding configurations. The significance of its neighboring phase coupling effects is evaluated by comparing the simulation results of a model including the effects with the simulation results of a degraded model neglecting the effects.
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