[1] Univ Campania Luigi Vanvitelli, Dept Engn, Via Roma 29, I-81031 Aversa, CE, Italy
[2] SINTEF Ind, Dept Sustainable Energy Technol, Forskningsveien 1, N-0314 Oslo, Norway
[3] Slovak Acad Sci, Inst Phys, Bratislava 84523, Slovakia
[4] Natl Tech Univ Athens, Sch Elect & Comp Engn, Zografou Campus, Athens 15780, Greece