Study on fuzzy direct torque control system

In this paper, the authors present a kind of fuzzy torque control system for an induction motor, and treat the error of stator flux, error of motor electromagnetic torque and positional angle of flux as fuzzy variables, and the voltage vector of inverter was selected through fuzzy decision. In this way, it improves the system response speed during the start-up and an abrupt change in the command torque. The simulation results show that the fuzzy torque control system meet the demand better for fast response.