The Fuzzy-PI Control of Switched Reluctance Motor Based on DTC

A strategy of fuzzy-PI control of switched reluctance motor drive system is presented. The strategy of fuzzy and PI is combined to realize the speed adjustment. The outer loop input is speed error and speed error derivative, while the outer loop output is torque which enters the inner loop of the direct torque control system to control 60 KW three phase 6/4 pole SRM. For the outer loop, it adopts fuzzy control when the speed error is big, and adopts PI control when the error is small. Simulation results indicate that this compound control strategy can settle the parameter which is hard to be determined caused by inaccurate motor model, and it overcomes the steady-state error of speed in classical fuzzy controller, and the paradox between the response time and overshoot of speed is managed. The system has a good anti-interference performance.