Online rotor resistance estimation based on MRAS-sliding mode observer for induction motors

2013 ◽  
Author(s):  
F. Mehazzem ◽  
A. Reama ◽  
H. Benalla
Keyword(s):  
Induction Motors ◽  
Sliding Mode ◽  
Sliding Mode Observer ◽  
Rotor Resistance ◽  
Rotor Resistance Estimation

A Passivity-Based Approach to the Rotor Resistance Estimation and Sliding Mode Control for Induction Motors

2010 ◽  
Vol 97-101 ◽  
pp. 4517-4522 ◽  
Author(s):  
Jenn Yih Chen ◽  
Bean Yin Lee
Keyword(s):  
Position Control ◽  
Induction Motors ◽  
Sliding Mode ◽  
Motor Drives ◽  
Load Torque ◽  
Rotor Resistance ◽  
Adaptive Laws ◽  
The Stability ◽  
The Moment ◽  
Rotor Resistance Estimation

Based on the passivity theorem, an approach of the rotor resistance estimation and sliding mode position control for induction motor drives is proposed in this paper. Owing to values of the moment of inertia and the viscous coefficient of induction motors are generally small, the load torque disturbance is a critical term to create the chattering phenomenon. The adaptive laws are taken into account for estimating the rotor resistance and the gain of a load torque. Therefore, the chattering associated with the conventional sliding mode controller can be alleviated. The stability analysis of the estimator and the position control system is carried out by employing the passivity theorem. Finally, experimental results are presented to show the performance and robustness of the estimator and the controller with the variations of the motor mechanical parameters, rotor resistance, and load torque disturbances.

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