An isolated photovoltaic power generation system with a novel fractional order PID controller based control strategy

Abstract

The renewable energy resources such as photovoltaic systems have major role in the development of sustainable energy systems. An efficient controller for standalone photovoltaic system based on fractional calculus is proposed in this work. The power extracted from the PV systems are continuously varies with respect to the dynamic changes of solar irradiance value and climate temperature. Here we introduce a Maximum Power Point Tracking (MPPT) algorithm is which realized with the support of Fractional Order PID (FOPID) controllers to extract the maximum possible power from the Photo Voltaic(PV)modules. The PID controller and FOPID controllers are also ensures the constant dc bus voltage and hence the ac output voltage at become stable. The effectiveness of the controller are compared using various performance time domain specifications like overshoot percentage, rise-time, settling-+time, etc. The various analysis were done under the variation of irradiance and temperature in MATLAB Simulink platform. The FOPID controller give improved performance compare with conventional PID controllers.