Research on Control Strategy of Supercapacitors Energy Storage System

Supercapacitors have characteristics of high power density, long life, and quick charging and discharging. DC-DC converter can be used for changing, processing and regulating the power. Supercapacitors energy storage system consisted of supercapacitors and DC-DC converter can be widely used in distributed power generation system to the stability of dc bus voltage and the improvement of the power quality. For simulation, the mathematical models of DC-DC converters and supercapacitors are developed using MATLAB/SIMULINK. The sliding mode controller of the supercapacitors energy storage is presented, and the simulation results verify the control method is feasible．