Optimal traction and regenerative braking reference current synthesis for an IPMSM motor using three combined torque control methods for an Electric Vehicle

In this paper, we will represent the optimal traction and regenerative braking current synthesis for an IPMSM using three combined torque control methods for an Electric Vehicle (EV) using Matlab/Simulink®. In order to impose torque at higher speed, the flux should be weakened by injecting negative current in the d- axis. Several methods of reference current generation will be described according to the operating speed, torque reference, voltage and current constraints. The torque/speed characteristics will be decomposed into five zones of operation delimited by three methods of control: Maximum Torque per Ampere, Voltage Current Limited Maximum Torque and Constant Power Region.