A.M. Kostygov - Ph.D. (Eng.), Dean of Department of Electrical Engineering, Perm National Research Polytechnic University. E-mail: dekan@etf.pstu.ru D.A. Dadenkov - Senior Lecturer, Perm National Research Polytechnic University. E-mail: dadenkov@mail.ru E.M. Solodkiy - Senior Lecturer, Perm National Research Polytechnic University. E-mail: wsdl00@gmail.com A.M. Shachkov - Student, Perm National Research Polytechnic University. E-mail: ajiexa_@mail.ru