S.A. Il-ushin - Student, Electric Technical Development Department, Perm National Research Polytechnic University. E-mail: ktei@pstu.ru A.A. Sharonov - Assistant Professor, Department for Information Technologies and Computer-Aided Systems, Perm National Research Polytechnic University. E-mail: stepper88@inbox.ru V.V. Kiselev - Ph.D. (Eng.), Associate Professor, Electric Technical Development Department, Perm National Research Polytechnic University. E-mail: ktei@pstu.ru