Equivalent thermal model of stator slots using FEA

The rapid evolution of electric propulsion requires the design of high-performance electric motor. During the operations, the electric power train can operate in critical ambient condition, with high mechanical and thermal stresses. Therefore, several accurate analyses/simulations must be done during the design procedure, with an increase of simulation time. The paper proposes a method to obtain an equivalent thermal model of the slots of a PMS M using the finite element analysis. The equivalent model is calculated solving an optimization procedure by means of heuristic method. Some numerical simulations are reported in order to show the goodness of the proposed solution.