Simulation aides in comparison between different methodology of field oriented control of induction motor based on flux and speed estimation

The most popular induction motor drive control method has been the field oriented control (FOC) in the past two decades. Furthermore, the recent trend in FOC is towards the use of sensorless techniques that avoid the use of speed sensor and flux sensor. The sensors in the hardware of the drive are replaced with state observers to minimize the cost and increase the reliability. This paper is mainly focused on the state observers to estimate the states that are used in the FOC algorithms frequently. The closed loop and extended Kalman filter (EKF) techniques are applied for the FOC of induction motor. Finally, both techniques are simulated based on Mathlab® Simulink program.