Abstract
Switched reluctance machine (SRM) is robust in nature as its rotor is devoid of permanent magnets and rotor windings. It is capable of operating in a wide range of speeds and offers an excellent dynamic response when appropriate power converters and control techniques are employed for its operation. These qualities make SRM, one of the best choices for electric vehicle (EV) applications. Due to its extremely non-linear characteristics, accurate modelling of an SRM is a challenging task. This paper first discusses an experimental technique to determine the parameters of the SRM accurately and subsequently presents precise modeling of the machine using these experimentally obtained parameters. Two methods of modeling an SRM are discussed along with an objective comparison brought out clearly not only between the two models but also with the performance of a laboratory prototype. A novel modification has been incorporated, to accommodate the saturation phenomenon of the machine, while developing the linear model for the SRM. Detailed analysis of the two types of models in the same operating zones is carried out, and their results are compared with the actual experimental results to ascertain the accuracy of the developed models.
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