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In this paper, design of current controller for a two quadrant DC motor drivewas proposed with the help of model order reduction technique. The calculationof current controller gain with some approximations in the conventional designprocess is replaced by proposed model order reduction method. The model orderreduction technique proposed in this paper gives the better controller gainvalue for the DC motor drive. The proposed model order reduction method is amixed method, where the numerator polynomial of reduced order model is obtainedby using stability equation method and the denominator polynomial is obtainedby using some approximation technique preceded in this paper. The designedcontrollers responses were simulated with the help of MATLAB to show thevalidity of the proposed method.

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