Newcastle University ePrints - eprint.ncl.ac.uk Vaca SM, Patsios C, Taylor P. Enhancing frequency response of wind farms using hybrid energy storage systems. In: 2016 IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2016. 2017, San Diego, California, USA: Institute of Electrical and Electronics Engineers Inc. Copyright: © 2017xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. DOI link to article: https://doi.org/10.1109/ICRERA.2016.7884560 Date deposited: 23/05/2017