Three control options for integrating wind power system using Hybrid Energy Storage System

This paper compares three control options of a Hybrid Energy Storage System (HESS) consisting of Li-ion battery and Super Capacitor (SC). The compared control options are the constant reference, first-order filter reference, and step average reference control. For the constant reference, HESS makes the fluctuating wind power a constant level. Both first-order filter reference and step average help smooth wind power fluctuation by mitigating the intermittence of wind power. Role allocating control assigns different roles to Li-ion and Super-capacitor, in order to make the most of their strength. The feasibility of these control options has been demonstrated with 10 MW wind power source, using PSCAD/EMTDC and MATLAB.