A new design of fuzzy direct torque control system for induction motor is introduced,it is based on strategy of modulating the duty cycle to decrease the torque and stator flux ripple.In this design,the hysteresis comparator and the space voltage vector selector of traditional direct torque control system are replaced by fuzzy controller.The fuzzy controller uses a three-input single-output structure,its three input variables are the torque error,flux error and flux angle amplitude,it is responsible for reg...