MAXIMUM TORQUE CONTROL SYSTEM FOR INDUCTION MOTOR

摘要

A maximum torque control system for an induction motor is provided to reduce the energy consumption of an electronic apparatus by minimizing a stator current flowing through the induction motor. A speed measuring unit(5) measures an actual speed of an induction motor, which is inputted from the induction motor to a speed controller. An FNN(Fuzzy Neural Network) controller(6) receives an error between an instruction speed and the actual speed as an input and outputs an instruction torque. A maximum torque controller receives the instruction torque and outputs a magnetic flux component instruction current, a torque component instruction current, and an instruction slip angular speed. A current controller(2) receives the torque component instruction current, the magnetic flux component instruction current, and a magnetic flux position, and outputs phase voltage instruction values. A space vector PWM(Pulse Width Modulation) inverter(3) receives the phase voltage instruction values and drives the induction motor.