Authors: Ing. Jan Veleba, e-mail: jveleba@kee.zcu.cz University of West Bohemia Department of Electrical Power Engineering and Ecology Univerzitní 8, 306 14 Plzeň, Czech Republic
Authors:Ing. Jan Veleba, e-mail: jveleba@kee.zcu.czUniversity of West BohemiaDepartment of Electrical Power Engineering and EcologyUniverzitní 8, 306 14 Plzeň, Czech Republic