CONCEPTUAL MODEL OF THE PROCESS OF ELECTRIC TRACTION AS A BASIS
FOR THE DEVELOPMENT OF THEORY TRACTION ELECTRICAL EQUIPMENT OF URBAN ELECTRIC TRANSPORT 

Auhadeev Aver Erikovich, сandidate of technical sciences, associate professor, sub-department of electrotechnical complexes and systems, Kazan State Power Engineering University (61 Krasnoselskaya street, Kazan, Russia), E-mail: auhadeevkgma@rambler.ru
Litvinenko Ruslan Sergeevich, сandidate of technical sciences, associate professor, sub-department of electrotechnical complexes and systems, Kazan State Power Engineering University (61 Krasnoselskaya street, Kazan, Russia), E-mail: Litrus277@yandex.ru
Kisneeva Lyaila Nurgaliyevna, senior lecturer, sub-department of electrotechnical complexes and systems, Kazan State Power Engineering University (61 Krasnoselskaya street, Kazan, Russia), E-mail: leilja80@mail.ru
Egorova Polina Vladimirovna, master degree student, Kazan State Power Engineering University (61 Krasnoselskaya street, Kazan, Russia), E-mail: epoulina@mail.ru 

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Subject and goals. The theory of traction electrical equipment requires the development of ideas about the traction process, because It is the operating modes of the electric equipment that uniquely determine the modes of movement of electric rolling stock, and the electric traction is the application point for managing the production and technical process of urban electric transport, which is not only a scientific but also an important practical problem. The article describes the scientific hypothesis that the operating modes of traction electrical equipment as part of the automated electric drive of the rolling stock of urban electric transport are formed under the influence of the complex Technological process of electric traction and are the topological basis of its structure. The purpose of the study was to study the process of transformation of electric energy into purposeful mechanical movement of rolling stock during realization of all technological conditions of industrial and technical system of urban electric Transport.
Materials and methods. Theoretical research was carried out on the basis of methodological analysis of the theory of traction electrical equipment, the theory of automatic control and automated electric drive, the theory of electric traction, the theory of motion structure, System approach and synergetic natural science paradigm.
Results. The main result is the formulated conceptual model (theoretical system), which allows to present the process of electric traction as a system consisting of five levels, which are in hierarchical relations and solving each individual specific task Construction of electric transport traffic.
Conclusions. The obtained theoretical system will allow developing the general theory of traction electrical equipment of urban electric transport by improving the methodological basis of the principles of forming the modes of traction electrical equipment at Implementation of the technology of the transportation process in the industrial and technical system of urban electric transport. 

electric traction process model, electric traction equipment, urban electric transport, motion building system, system approach, synergetic natural science paradigm