This study analyzes the operating-point dependency of inverters on the critical inductance values of the network impedance, e. In order to reduce. Black-box studies must identify the inverter characteristics in the laboratory, which can differ depending on specific operating points, i. Increasing photovoltaic power plants has increased the use of power electronic devices, i. Inverters are mainly used to convert direct current into alternating current & act as interface between renewable energy & grid. The inverter is able to supply electrical energy to the connected loads, ensuring. imum power loss from Pc (EUR). This paper addresses this issue by presenting a novel high voltage gain converter that employs a coupled induct d series parasitic. In the photovoltaic power generation system, in order to maximize the efficient injection of the power generated by solar cells into the power grid, the conversion efficiency of PV inverters has been one of the most concerned technical issues in the industry in recent years.