SENSORLESS VECTOR CONTROL OF INDUCTION MOTOR

Abstract

In this work Scalar Control, Vector Control and Sensorless Vector Controlled Induction Motor drive is explained. In which it is shown that sensorless control is superior in case of control. Scalar control is simple and a low-cost technique but it gives poor transient response and it is unable to control two variables torque and magnetic flux that’s why it cannot be used in high performance application. Since vector control is complex and of high price but it is a high-performance control system which is valid in both steady state and transient conditions. It has fast dynamic response and speed regulation is good. This can be better performed in sensorless vector control in which speed sensor is not used which clearly lowers the cost and the adaptive method used here is for better estimation of motor parameters.