Using Analytical Approach with Finite Element Analysis for Coupling Magnetic and Thermal Analysis for Motors

Thermal analysis is a key factor when designing motors. We propose to link the studies of electromagnetic and thermal aspects in transient application with Finite Element Method (FEM) to represent the thermal state of motor with higher accuracy. As electromagnetic response time is different of thermal response time, an original method is used for extracting average values on one magnetic period of losses (Joule and iron losses), and to use them as input for the transient thermal analysis. So, the temperature in different parts of the motor is extracted, and brought back as input for the next electromagnetic computation.