Control, analysis and comparison of different control strategies of electric motor for battery electric vehicles applications

Electric motors are key components in all electric drivetrains, particularly battery electric vehicles (BEVs). Consequently, the control strategies of those electric motors play an important role in the development of high performance BEV powertrains. Therefore, this article presents the control design, analysis and comparison of different motor control strategies. In this paper, the most popular control strategies (such as Indirect Field-Oriented Control (IFOC), Hybrid IFOC and PWM voltage scheme, IFOC based on SVPWM, Direct Torque Control (DTC), and DTC based on SVPWM) are designed and analyzed in detail by using Matlab/Simulink. Furthermore, in this research, IFOC based on PWM voltage and PSO is designed to improve the motor efficiency especially at low load conditions. It is shown that the PSO algorithm has the straightforward goal of minimizing the motor losses at any operating condition by selecting the optimal flux. The simulation and experimental results are provided.