Engineering, Energy, Transport AIC

Stadnik Nikolai – Doctor of Technical Sciences, Associate Professor, Professor of the Department of Electrotechnical Systems, Technologies and Automation in Agroindustrial Complex of Vinnitsa National Agrarian University
(3 Solnechnaya St., Vinnitsa, 21008, Ukraine, email: stadnik_mykola@vsau.vin.ua).
Ivanov Nikolai – PhD, Professor of the Department "Machines and Equipment for Agricultural Production" of Vinnitsa National Agrarian University (3 Solnechnaya St., Vinnitsa, 21008, Ukraine, email: stadnik_mykola@vsau.vin.ua).
Motornaya Oksana – PhD, Associate Professor of the Department "Machines and Equipment for Agricultural Production" of Vinnitsa National Agrarian University (3, Solnechnaya St., Vinnitsa, 21008, Ukraine, email: motorna@vsau.vin.ua).
Pereyaslavsky Alexey – PhD, The senior lecturer of the chair "Machines and equipment of agricultural production" of the Vinnytsia National Agrarian University (3, Solnechnaya St., Vinnitsa, 21008, Ukraine, email: aleksey.pereyaslavskyy@gmail.com).

The issue of creating low–voltage low–power electromagnets with increased reliability for automation systems in machines of the agro–industrial complex is considered.
A technique is used to calculate the parameters of the electromagnet from the condition that the first cascade of the unit be operational. In addition, experimental methods for determining the characteristics of prototypes of electromagnets are used.
The analysis of the application of modern aggregates with electrical control in various machines of the agro–industrial complex is carried out. An important parameter of electromagnets are their traction characteristics, which determine the operation of the electromagnet and, accordingly, characterize the reliability of the entire system. Based on operating conditions, to provide mechanical reliability and simplicity of design, it is proposed to use armored–type electromagnets with an embedded core.
The effect on the power characteristics of the structural design of electromagnets, namely the non–magnetic insertion in the steel coil of the coil, is assessed. The parameters of this element significantly affect the magnetic field and, accordingly, the power characteristics of the electromagnets. Schemes of magnetic fluxes in electromagnet are considered with different arrangement of a non–magnetic insert. When calculating the parameters of the winding of the coil, the basic requirements for it were taken into account, namely the specified critical force, the critical gap, the size of the armature of the electromagnet, the cross section of the magnetic circuit, and the magnetomotive force.
A special stand was prepared for experimental research, on which experimental measurements of the traction characteristics of prototypes of electromagnets were made. A family of traction characteristics of these electromagnets is constructed at different supply voltages.

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