Optimization photovoltaic pumping system based BLDC using fuzzy logic MPPT control

In this paper, we present an approach for modeling, control and optimization of a photovoltaic pumping system which contains a pv generator, DC-DC boost converter, MPPT controller, DC-AC inverter and a BLDC motor. We use an intelligent control method for searching the maximum power point (MPP). This method uses a fuzzy logic controller applied to a drive a DC-DC converter to an optimal operating point using PV panel´s measured variables. The PWM signals are generated by the interaction of the motor speed closed-loop system and the current hysteresis. The motor reference current is compared with the motor speed feedback signal. The considered model has been implemented in Matlab/simulink environment. The results show the effectiveness of the proposed method to increase the performance of the water pumping system.