Development of a Solar LED Illumination Control System based on Variable Universe Adaptive Fuzzy PID Cotroller

Aimed at the shortcomings that traditional fuzzy logic control method for solar LED illumination system maximum power point tracking (MPPT) control system, a novel solar LED illumination control strategy based on variable univers adaptive fuzzy PID controller is proposed. The controller can automatically adjusts the variable univers with the change of photovoltaic output power deviation, to realize the solar LED illumination system photovoltaic generation system's maximum power point (MPP) fast and accurate control. A high power LED driving circuit is also designed for maintaining a constant working current. At last, a prototype system is constructed to verify the advantage of the proposed control system, and the experimental results show the control strategy can achieve effective control for solar LED illumination system MPPT and constant current output control, which improved the accuracy and stability of the whole control system, verified the system is feasible and superiority.