PV power generation system has been paid more and more attention

but power quality is reduced by the randomness of the PV power supply.In this paper

the PV power generation system model including the charging system of the ultra-capacitor is set up throughout characteristic analysis on the current ultra-capacitor and the control simulation is performed with MATLAB/Simulink as simulation platform.The operation feature and control result of the charging device of the ultra-capacitor in dealing with light intensity variation and load fluctuation.It is shown by the result that the ultra-capacitor can effectively stabilize busbar voltage and improve the operation stability of the PV power generation system.