Performance Analysis of a Grid Connected Solar-PV and PMSG-Wind Energy based Hybrid System

In this paper, a solar-PV and wind energy based grid connected hybrid system and its associated control schemes are presented to study the system dynamic responses at varying wind velocity and solar irradiation. Maximum power point tracker (MPPT) and blade pitch angle control algorithms are incorporated to capture maximum wind and solar power, and also to limit the wind energy to its rated value when wind speed is beyond its rated respectively. Voltage (stator and grid) oriented vector control (VOVC) schemes are utilized (i) to achieve variable speed constant frequency (VSCF) operation, (ii) to get the control of active and reactive powers independently and (iii) to operate the system at unity power factor (UPF). The system is implemented in MATLAB/Simulink environment and its performances are studied thoroughly. Result shows that the system is properly working and also gives very good dynamic responses at variation of input sources (solar and wind).