Research of BLDC Simulation Model and Comparison under Different Control Strategies

A simulation model of brushless DC motor under MATLAB is established. This model has the virtues of simpleness, understandability, modifying parameters easily, it can be an universal model under different control strategies. In this paper, the performances of BLDC with different control strategies are compared: current hysteresis PWM and direct torque control(DTC). The results of simulation show the model is available and BLDC has good performance under DTC.