Speed and Rotor Resistance Estimation of AC Induction Motor

Ac Induction Machine Speed Observer with Rotor Resistance Adaptation

AC induction motors become very popular for motion control applications due to their simple and reliable construction. Control of drives based on AC induction motors is a quite complex task. Provided the vector control algorithm is used we need to know not only the rotor speed but also the position of the magnetic flux inside the motor during the control process. In most applications the magnet...

AC Induction Motor Stator Resistance Estimation Algorithm

Stator resistance identification algorithm for AC induction motor is presented in this paper. It does not require additional external excitation. The algorithm is intended to capture slow variations of stator resistance which are given by the changes in stator windings temperature. Steady state operation with harmonic voltages and currents are located during the operation of the motor and the s...

Estimation of Induction Motor Speed by EKF In Stationary Frame and Use of Rotor Flux and Study of Parameter Variations

Estimation of Induction Motor Speed by EKF In Stationary Frame and Use of Rotor Flux and Study of Parameter Variations

A Stator Resistance Estimation Scheme for Speed Sensorless Rotor Flux Oriented Induction Motor Drives

− Accurate knowledge of stator resistance is of utmost importance for correct operation of a number of speed sensorless induction motor control schemes in the low speed region. Since stator resistance inevitably varies with operating conditions, stable and accurate operation at near-zero speed requires an appropriate on-line identification algorithm for the stator resistance. The paper proposes...