A simple nonlinear model was developed for the switched reluctance motor (SRM) based on the nonlinear functions for the flux linkage. The model separates the effects of the winding current and the rotor position to give the continuous differentiable equation that can easily predict the performances of SRM. Analytical solutions were obtained, avoiding the difficulties that subsection model might bring. The model required a minimum of precalculated or measured input data, and was used in initial SRM design to minimize the design and analysis time. The simulation results show that the analytical model can predict accurate flux linkage-current relationships, and be applicable for the SRM computer aided design software, and help to warrant the engineer projects.