Anfis Modelling, Partial Shading and Mppt Controlled Hardware Analysis of Stand Alone Photovoltaic Water Pumping System

The solar photovoltaic power has received great attention and experienced impressive progress the countries all over the world in recent years because of more and more serious energy crisis and environmental pollution. Due to scarcity of fossil fuel and increasing demand of power supply, we are forced to utilize the renewable energy resources. Considering easy availability and vast potential, world has turned to solar photovoltaic energy to meet out its ever increasing energy demand. The mathematical modelling and simulation of the photovoltaic system is implemented in the MATLAB/Simulink environment and the same thing is tested and validated using Artificial Intelligent (AI) like ANFIS. This paper proposes an embedded controlled buck converter using PIC 16F877A microcontroller for standalone photovoltaic water pumping application with Incremental conductance algorithm as maximum power point tracker and the same thing is implemented in hardware application till the motor level. The simulated results are matching closely with the hardware results. The output of the controller, pulse generated from PWM can switch MOSFET to change the duty cycle of buck DC-DC converter. The result reveals that the maximum power point is tracked satisfactorily for varying insolation condition. Finally the performance of the photovoltaic array under partially shaded condition is also analysed for varying illumination level.