Modeling and Performance Analysis of Grid Integrated Hybrid Wind and PV Based DG System with MPPT Controllers

Due to rising public awareness of environmental protection, ever increasing energy demand and steady progress in power deregulation, alternative distributed generation (DG) systems have at-tracted increased interest. Wind and photovoltaic (PV) power generation are two of the most promis-ing renewable energy technologies. In this paper a detailed mathematical model and a control schemes for hybrid wind and PV based DG system with MPPT controllers for grid connected mode of opera-tion is developed. The wind power generation system uses wind turbine (WT), a permanent magnet synchronous generator (PMSG), a three-phase diode rectifier bridge, dc/dc boost converter with MPPT controller. The PV generation system uses PV array, a boost converter with maximum power point tracking controller. Both sources are connected to common dc bus with a dc link capacitor and supply power to load and utility grid through PWM voltage source inverter. The model developed for hybrid wind and PV system has been implemented in Matlab/Simulink environment. The performance of the developed model is studied for different nature of the individual DG source and load condi-tions. Simulation results show that the controllers can regulate the DC link voltage, active and reactive power produced by the hybrid DG system.