Analysis of DC Connection for Capacitor Energy Storage in Wind Power Generation System

This work presents the analysis and performance of connecting two wind power generation systems with the energy storage at the dc side. Energy storage is desirable to be installed to keep constant output from the wind power generation system. The DC connection of two wind power generation system helps to exchange power between the two systems and can suppress the disturbance of the output power to the utility systems longer than the stand alone system. The performance of connecting two wind generation systems with the energy storage at the dc side has been investigated by using the simulation. The wind power generation system is modeled and simulated by MATLAB/Simulink and the effectiveness of the dc connection of two systems is presented. This effect is easily achieved and implemented without any additional control. The controller measures only the common dc side capacitor voltage of the local system. MATLAB/Simulink simulation verifies the better performance in a certain situation.