Voltage regulation of a PV farm in a wide range using reserve panels

Nowadays, due to increasing energy demands and concerns about environmental issues and global warming, there has been a rapid growth in renewable power generation. One of the most accessible renewable energies is solar energy, which can be easily converted to electricity using photovoltaic (PV) systems. PV panels, power electronic interfaces, and sometimes loads have non-linear and time-variant characteristics. Hence, the DC-link regulator is not capable of compensating the DC-link voltage in case of considerable variations. In this paper, a new technique based on reserve panels is proposed to improve the performance of DC-link controller in case of panel outage and partial shading. To verify the proposed method, some simulations are carried out in MATLAB/Simulink software.