Comprehensive Review of Wind and Solar Photovoltaic System Integration into the Grid

The increasing requirement of electrical energy and nature restrictions, extraction of electricity from sustainable energy-sources have been enlarged. The main sources of inexhaustible energy are from wind, and solar-pv systems. Incorporating renewable energy sources has gained significant importance in achieving the growing demand for power. Incorporating renewable energy sources presents both challenges and opportunities. In wind energy technology, the DFIG is immensely suitable due to its numerous advantages over the constant speed-driven wind-turbines. The DFIGs are capable of improving power quality, and stability of the surviving power-system. The power converters, grid-side (GSC), and rotor-side (RSC) are utilized for DFIG. The power perceived in solar-photovoltaic (PV) system is integrated into the grid through dedicated voltage source converter. To control the DC link voltage, DC/DC converters are utilized, by implementing, MPPT algorithms, maximum power is extracted from PV, and injected to grid. Advanced hybrid configuration is proposed, such as the perceived, pv power is injected to AC grid, via GSC of the DFIG. To control the DC bus potential, and extracting maximum power, from pv system, advanced MPPT algorithms can be implemented. Thus, the proposed hybrid configuration can reduce cost of the converters and improves the efficiency. The various issues integrated with the hybrid configurations of DFIG-PV system, are presented in this paper.