Implementation of ANFIS Controller to Improve Stability of Grid-Tied PV System

Abstract

The characteristics of a photovoltaic (PV) panel are nonlinear and heavily dependent on solar radiation and temperature cell variations. The main components of the system are solar array connected through a dc bus to grid side inverter. An maximum power tracking technique is implemented to extract the maximum power from the PV panel. Making ensuring that the solar panel is providing the most power possible is the primary goal of the MPPT technology. This paper proposes a concept of a different MPPT techniques for BOOST converter for improving the performance of PV system in terms of efficiency and power from the PV. The proposed system consists of PV panel, Boost converter and grid side inverter. Due to instantaneous changes of solar irradiance and temperature, MPPT is integrated in the inverter control. The Energy generated by the grid pv system is sent to the grid. This is accomplished through an efficient DC/AC conversion where the MPPT is integrated in the inverter to control active and reactive power level injection to the grid. A Hysteresis control technique is proposed to generate the required gate signals for grid side inverter also helps to maintain proper synchronization with grid.  A suitable closed loop controller is designed to regulate the power quality problems. Also, a ANFIS concept is proposed in this paper for further improvement of PV power. ANFIS technique to control the performance of Photovoltaic system connected to the grid. The MATLAB/SIMULINK power system tool box will be used to simulate the proposed system.