Modeling and Control of MPPT Based Grid Connected Wind-PV Hybrid Generation System

Abstract

Renewable energy sources such as the solar & wind offer clean, abundant energy. As the power demand increases power failure also increases so the renewable energy can be used to provide constant loads. To convert the basic circuit equation of solar cell into simplified form a model developed including the effects of changing solar irradiation and temperature. Power control strategy is used to extract the maximum power. Maximum power point tracker (MPPT) control is essential to ensure the output of photovoltaic power generation system at the maximum power output as possible. This system consists of PMSG as a wind generator, solar array, dc-dc converter and grid interface inverter. In this paper perturbation & observation (P&O) method and incremental conductance method are used and simulated in Matlab/Simulink. The voltage source inverter interface with grid transfers the energy drawn from the wind turbine and PV array to the grid by keeping common dc voltage constant. The simulation results show the control performance and dynamic behavior of the hybrid wind-PV system.