ecause of non-sinusoidal and non-linear operation of switched reluctance motor accurate calculation of iron loss in this motor is not an easy task. Calculation of iron loss with the aid of fully dynamic simulation is very time-consuming. Therefore, in the process of design this procedure is not be well used. Topic of calculation of losses in an electric motor is closely related to its thermal analysis. Thus, for a more accurate design electromagnetic-thermal interaction should be examined. The thermal conductivity of the various parts of an electric motor is non-isotropic. Therefore, due to presence of non-isotropic materials, for a more accurate thermal analysis of an electric motor it is necessary to be done three-dimensional simulations. In this thesis, calculation of iron loss and thermal analysis of switched reluctance motor has been studied using finite element method. For this purpose, during this thesis three finite element solver were developed (in MATLAB). The first solver is related to solving two dimensional non-linear magneto-static equation. Second solver is for solving two dimensional steady state heat transfer equation. Third solver is for solving three dimensional non-isotropic steady state heat transfer equation. Each of these solvers can be easily coupled to each other and the information can be exchange between them. To verify the validity of obtained results corresponding electromagnetic and thermal simulations were performed in Maxwell and Ansys. The results of these simulations are presented and compared with the results obtained from the developed programs. In this thesis an algorithm for the calculation of iron losses in switched reluctance motor is provided that only uses static simulations. So, total simulation time is low and this method can be well used in the design. Also, based on this algorithm an adaptive method for the calculation of iron losses is presented. In this thesis, coupled electromagnetic-thermal analysis of switched reluctance motor has been studied and an automatic program for it was written. In this program electromagnetic-thermal simulations are done sequentiallyuntil solutions converge. Also, three-dimensional thermal analysis of switched reluctance motor has been studied and the results were compared with two-dimensional simulations. Keywords: 1- Switched Reluctance Motor , 2- Iron Loss , 3- Thermal Analysis, 4- Finite Element Method, 5- Coupled Electromagnetic-Thermal Analysis.