DSP implementation of fuzzy based power factor improvement strategy for a dual converter fed drive

The paper embarks to design a fuzzy based control algorithm through the use of a Digital Signal Processor (DSP) to improve the input power factor of a dual converter fed drive system. Th e strategy is created to ensure that the input current vector forcefully follows the source voltage wave in order to arrive at a significant increase in the fundamental component and lowering of the other harmonic components. The methodology is implemented using a suitable prototype and its performance evaluated experimentally over a vi able range of load powers. The results claim an almost unity input power factor and acceptable values in the total harmonic distortion (THD) of the input current, in addition to regulating the speed of the reversible drive through the entire operating horizon.