ANN-Based: WRIM Speed Control and Harmonic analysis of Rotor Chopper Resistance

Abstract

This paper presents an Artificial Neural Network ( ANN) based technique for controlling external chopper resistance circuit in the rotor side of wound rotor induction motor(WRIM), for keeping the motor speed constant at the varied torque or keeping the load torque constant at the varied speed , which generates the exact chopper duty cycle for any given operating condition. Also the paper study current and torque harmonics analysis. The controller circuit was simulated and operated on both closed and open loops. Theoretical analysis is carried out for the controller drive system. Theoretically obtained results are compared with those obtained by ANN. All data which are used to train the network by a back propagation algorithm simulated in the MATLAB Neural Network Toolbox. The results obtained are satisfactory and promising. The advantages of this controller have the design simplicity and high accuracy.