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Switched reluctance motors are often used nowadays in various industrial applications. Because of their principle of operation switched reluctance motors cannot work without a power electronic converter and a control system. Therefore not only design of individual components but also complex design of a complete switched reluctance drive system is very important. Complex approach is also necessary as far as switched reluctance drive system modelling is concerned. In the paper a method of modelling and mathematical model of a switched reluctance drive system are presented. The model derivation is based on circuit-oriented modelling methods and Lagrange's energy method. Coefficients of the Lagrange's equations have been calculated using the finite element method. The model, because of its method of derivation, is linear but allows for modelling asymmetries. Discussion on determination of model parameters for two cases -for fully symmetrical switched reluctance drive and for drive with mechanical and/or electrical asymmetries -is presented. Selected simulation results, verified against the experiment, are also presented.

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