Efficiency map of a Switched Reluctance Motor using Finite Element Method in vehicular applications

Switched reluctance motors (SRMs), which are simple and reliable motors, have attracted interest for electric vehicle propulsion systems. It is shown that an SRM offers a good performance at high acceleration and low speed driving conditions. Efficiency map of an electric motor is a very important characteristic specially when the motor is to be used in a wide range of speed and load variations, which is the case in electric propulsion systems. In this research, the efficiency map of an SRM is derived using a combination of the finite element method (FEM) and a mathematical model. This efficiency map has been used for different driving cycles to test the SRM performance as a vehicle propulsion motor.