On-Line Test Method of I-V Characteristics of Laser Photovoltaic Module

Laser photovoltaic cells are different from ordinary photovoltaic cells in that their photoelectric conversion efficiency is much higher than that of ordinary photovoltaic cells, with lower open circuit voltage and higher short circuit current. However, laser is easily affected by the environment and attenuated during the transmission process. Laser relay energy transmission can solve the above problems very well. In order to measure the energy loss of laser in relay energy transmission in real time, a platform is designed to measure the output characteristics of laser photovoltaic cells under laser irradiation, that is, the on-resistance of MOSFET (working in variable resistance area) in the branch is changed by changing the reference voltage, so as to measure the output characteristic curve of laser photovoltaic cells. This platform verifies the effectiveness of the laser photovoltaic cell output characteristics test platform by measuring the output I-V characteristic curve of photovoltaic panels under sunlight conditions.