Research Of PV Generation System Using Ultracapacitance To Store Energy

PV generation system has developed rapidly and became the major new renewable energy because of the more and more serious energy crisis all over world. It's very important to apply power electric into PV generation system,and It can improve quality and efficiency of output power from solar cell array.This paper designs a system based on ultracapacitance for storing energy. Firstly,it analyzes the principle of energy flowing in charging and discharging circuit.Secondly,it describes the model of energy flowing in particularly.Lastly,It designs the control scheme,which is applied in storing energy.It presents the DC/AC fraction.In this part,it researches the principle of SPWM firstly,then designs two-loop feed control scheme and calculates the parameter.In the four part of paper,it puts forward instantaneous-current-feed and grid-voltage-forward-feed control plan due to the control target in grid-connecting.In the end,it constructs a DC/AC experimental platform and design a controller based on TMSC320F2812 chip.