1. Instituto Politécnico Setúbal INESC-ID Lisboa,Department of Electrical Engineering Sustain.RD, ESTSetúbal,Setúbal,Portugal
2. Instiuto Politécnico Setúbal CTS/UNINOVA,Department of Electrical Engineering Sustain.RD, ESTSetúbal,Setúbal,Portugal
3. Instituto Politécnico de Lisboa INESC-ID Lisboa,ADEEEA, LCEC ISEL,Lisboa,Portugal
4. Electronic and Automation Engineering University of Extremadura,Department of Electric,Badajoz,Spain
5. Universidade de Lisboa INESC-ID Lisboa,DECC IST,Lisboa,Portugal