A Fuzzy Logic Controller for Direct Power Control of PWM Rectifiers with SVM

A novel direct power control of three-phase PWM rectifiers with constant switching frequency using fuzzy logic controller for space-vector modulation (fuzzy DPC-SVM) is proposed in this paper. The errors of active and reactive powers are the inputs of fuzzy controller and switching times are the outputs of controller. Line voltage sensors are replaced by a virtual flux estimator. Fuzzy DPC-SVM has several features, such as a simple algorithm, good dynamic response, constant switching frequency, and provides sinusoidal line current (THD of line current 2.2%) when supply voltage is not ideal like as DPC-SVM in ideal conditions (THD of line current 2.01%).