Abstract: To solve the problems in traditional direct torque control system, a direct torque control method based on Space Vector Pulse Width Modulation(SVPWM) was proposed and was applied to variable frequency driver of the scraper conveyor. The structure and load characteristics of scraper conveyor driver system were studied. The basic theory of direct torque control was described. The reasons of its low speed torque pulse were studied in details. The model of direct torque control system based on SVPWM was built, and the model was simulated by Simulink. The simulation results showed that the SVPWM technology could make up the defects of low speed torque pulse in the direct torque control system.