1. Technical University of Košice,Department of Theoretical and Industrial Electrical Ingeneering,Košice,Slovakia
2. Kremenchuk Mykhailo Ostrohradskyi National University,Department of Systems of Automatic Control and Electric Drive,Kremenchuk,Ukraine
3. Kremenchuk Mykhailo Ostrohradskyi National University,Department of Electrical Engineering,Kremenchuk,Ukraine