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Photovoltaic cell(PV)array is a photoelectric conversion device in the laser power beaming system,the uneven energy distribution of laser beam adversely affects photoelectric efficiency of PV array.In order to improve photoelectric efficiency under uneven laser irradiation,an optimized high-efficiency and parallel-series PV array is designed.Based on the mathematical model and MATLB/Simulation model of PV array to analysis the influence factor of photoelectric efficiency of PV array,and put forward ideas and programs to improve efficiency of parallel-series PV array.