Application of BP Neural-network in Speed Estimation of Direct Torque Control System of Induction Motor

High performance speed estimation is very important in sensorless direct torque control of induction motor.This paper applied neural-network to estimates rotor speed of induction motor in direct torque control system. And used the individual training neural-network to cope with the complex calculations. The simulate result shows that the system which using the neural-network have good performance on speed estimation.