Modelling and optimal design of a fuel cell energy storage system using rejected energy by wind parks in isolated electric gridshttp://www.library.tuc.gr/artemis/DT2009-0222/DT2009-0222.pdfhttp://purl.tuc.gr/dl/dias/5D1C395B-9EA2-4137-8869-9581A040F401Modelling and optimal design of a fuel cell energy storage system using rejected energy by wind parks in isolated electric gridsfree2014-03-24application/pdf