Grid Connected Solar PV Array Fed BLDC Motor Driven Water Pumping System Using Fuzzy Logic Controller

This paper proposes a grid associated photovoltaic fed brushless DC motor driven water pumping system with improved power quality of the grid by using a Fuzzy Logic Controller. This system enables a water pump to operate continuously regardless of the weather and to feed a grid when water pumping is not necessary. A power flow control in either direction between the DC bus and the grid is achieved with a unit vector template (UVT) generation technique. A Fuzzy Logic Controller is proposed to reduce the inner loop current controller error, resulting in a fast response speed and obtaining an improved power quality of grid. The effectiveness of proposed Fuzzy Logic control technique is compared with conventional PI control technique approach. The system is simulated on the MATLAB/Simulink platform.