1. Electrical Engineering DepartmentAlberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering/Federal University of Rio de Janeiro (COPPE/UFRJ)Centro de TecnologiaAv. Athos da Silveira Ramos, 149 ‐ Ilha do FundaoRio de JaneiroRJ21941–909Brazil
2. Department of Energy TechnologyAalborg UniversityPontoppidanstraede 1119220AalborgDenmark