Coupled physics solvers for analysing the magneto-thermal behaviour ofa permanent magnet synchronous machines

International audienceThe aim of this study is to present a thermal analysis of a permanent magnet synchronous machine based on the finite elementmethod. The developed model can be used to predict temperature distribution inside the studied motor during the ratedoperation. Electromagnetic computation (EM) is carried out with the aid of two 2D finite-element (FE) simulations on thecross-section of the PM motor. To analyze the process of heat transfer (HT) in an electrical machine, empirical correlationsare used to describe the convective (HT) from the different surfaces of the PM motor. The (HT) coefficient is determinedusing dimensionless numbers. The proposed numerical method to solve the coupled problem is based on independently andsuccessively solving the (EM) and thermal problems and then transferring the results between the two sub-problems. Theresults obtained by the model are compared with experimental results from testing the prototype electric motor