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In order to extend the service life of electric machines traction rolling stock has been proposed recovery technology insulation using infrared energy, will improve the quality of insulation in terms of the breakdown voltage and hardness. This article analyzes and estimated of experimental studies conducted in two different meaningful of the work in this direction. Presents an analysis these works in terms of distinctive features and conclusions of the pilot studies. According to the analysis formulated a new hypothesis about the need to address when capsulating the insulation and its elasticity. Also set new directions for future research.

The article studies comparing the effectiveness of using thermoradiation and convective drying methods insulation windings of electrical machines of traction rolling stock, impregnated with various modern varnishes and compounds at their factory and depot repair. Objective factors in the comparison methods are parameters such as temperature class, electric strength and cementing capacity. The author substantiates advantage thermoradiation method over convective.

Constantly conducted studies of the reliability of electric equipment of traction rolling stock have shown that the most vulnerable element is the insulation design of the windings of power equipment, especially traction motors. Existing methods and means of restoration and repair of insulating structures of windings of traction motors of modern electric locomotives, based on drying polymer insulation in convective high-power electric furnaces, are energy and time-consuming. This technology has not undergone significant changes for over 50 years. In order to extend the polymer insulation life of electric vehicles of traction rolling stock, an insulation drying technology using thermal radiation was proposed that reduces the cost of electricity for repairs and increases the drying speed by reducing heat loss. The article is devoted to the design of a new device for drying the insulation of the windings of the magnetic system of the skeleton of the backbone of the electric locomotive traction engine by a rotating thermal field. The analysis of works and conclusions based on the results of theoretical studies related to mathematical modeling is presented. As a method of mathematical modeling, the finite element method was used in the work. A simplified 3D model of the winding of the core magnetic system with infrared emitters was created. According to the results of finite element mathematical modeling, temperature fields of heating the polymer insulation of the windings of the core of the traction motor were obtained. Based on this calculation, the work selected the optimal design parameters of the proposed device that provide the minimum energy costs for various sizes of the skeleton of the traction engines. Based on the proposed device variant, an application for a patent for a utility model has been filed, and this prototype is being assembled on the basis of the Ulan-Ude locomotive and car repair plant, a branch of Zheldorremmash JSC. New directions for further research are also set.

The article is devoted to continue presenting the results of experimental studies on the identifi-cation of rational modes of IR energy supply in encapsulation technology insulation windings of electric machines (EM) of traction rolling stock (TPS). In this paper, published the results of com-paring the effectiveness of the use of various oscillatory modes of infrared (IR) energy supply in the process of winding insulation encapsulation the frontal parts armature winding of the traction mo-tor type NB-514B electric locomotives series "Ermak" on the process plant at their depot and fac-tory repair. In studies to identify rational oscillating modes IR energy supply option duty cycle remained unchanged for the existing design of the generator of heat radiation technological installation, and changed only option cyclical, characterized by changing the speed of rotation of the armature trac-tion motor on the plant corresponding to 5, 25 and 50 Hz when the drive installation works from the frequency converter. The process of encapsulation was carried out first only short-wavelength radiation generated incoherent halogen emitters, then only at medium-wavelength radiation generated pulse ceramic radiators, and finally - with alternating heating medium short- and medium-wavelength radiation, i.e. with these two types of emitters in the spectral-oscillating mode IR energy, on which is currently obtained patent for the invention. For comparability of experimental studies same dose irradiation of segments frontal part of the armature windings of the traction motor type NB-514B electric lo-comotives «Ermak». Objective factors when comparing encapsulation modes to identify the most efficient are pa-rameters such as dielectric strength (the value of the breakdown voltage insulating tape) and ce-menting capacity.