^pof;
Electrical;
Energy;
Conversion;
Systems,;
Faculty;
of;
Electrical;
Engineering,;
"Dunarea;
de;
Jos;
";
University;
of;
Galati,;
Galati;
800146,;
Romania;
^pLaboratory,;
University;
of;
Le;
Havre,;
Le;
Havre;
Cedex;
76600,;
France;