Efficiency enhancement of PV cell emulating system in connection mode

The grid-tied solar power systems are rapidly developing in many countries. The working efficiency of the power conditioner system (PCS) in the grid-tied solar power system is limited because the power supply from solar panel depends on the climate condition. We proposed a novel technical design in the previous research to connect the small scale wind turbine with the PCS of the grid-tied solar power system by emulating technical characteristics of the PV in series connection mode. Therefore, the utilization rate of the PCS was enhanced. However, this enhanced operating efficiency of the PCS is not good in changing solar irradiation condition because the maximum input voltage of the PCS is restricted and the output voltage of the PV alters slightly. Thus, we introduce a technical method of efficiency improvement for the photovoltaic (PV) cell emulating system in connection mode in this research.