Power Quality Improvement in PV Flyback Microinverter using Adaptive FuzzyPR Controller

Abstract

<pvstyle="text-align: justify;">this project presents an power quality improvement in PV Flyback microinverter using adaptive fuzzy-PR controller. The proposed control strategy consists of the proportional-resonant (PR) controller with fuzzy logic controller. Compared to the conventional control strategy using the proportional-integral controller, the PR controller with HC and fuzzy logic controller provides a higher system gain at the fundamental and harmonic frequencies of the grid without using a high gain in both operation modes. Then, it enhances the tracking speed and disturbance rejection performances satisfied, By applying fuzzy logic controller yielded from the proposed operation mode selection, the disturbance rejection is achieved more effectively, and the control burden is reduced. Finally, the simulation and experimental results were shown to verify the tracking speed and disturbance rejection performances of the proposed control strategy