Design of Current Controller for Two Quadrant DC Motor Drive by Using Model Order Reduction Technique

In this paper, design of current controller for a two quadrant DC motor drive was proposed with the help of model order reduction technique. The calculation of current controller gain with some approximations in the conventional design process is replaced by proposed model order reduction method. The model order reduction technique proposed in this paper gives the better controller gain value for the DC motor drive. The proposed model order reduction method is a mixed method, where the numerator polynomial of reduced order model is obtained by using stability equation method and the denominator polynomial is obtained by using some approximation technique preceded in this paper. The designed controller’s responses were simulated with the help of MATLAB to show the validity of the proposed method. KeywordsCurrent controller, Model order reduction, Integral Square Error.