Перегляд за Автор "Batygin, Yuriy"
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Документ Magnetic-pulsed attraction of sheet billets with “direct passage of current”(Національний технічний університет "Харківський політехнічний інститут", 2020) Batygin, Yuriy; Yeryomina, Olena; Shinderuk, Svitlana; Strelnikova, Viktoria; Chaplygin, EvgeniyThe theoretical substantiation of the efficiency of magnetic-pulse attraction method of sheet metal with “direct current transmission” through the object being processed is presented. The analysis of well-known works in this area is carried out, it is shown that the lack of sufficiently complete theoretical studies does not allow effectively performing a given production operation. By solving the boundary-value electrodynamic problem, analytical expressions are obtained for the phase dependences of currents in the experimental system and the excited forces of attraction of the processed object. It is proved by numerical estimates that the low-frequency mode of the ongoing electromagnetic processes is preferable when the fields penetrate intensively through the condu cting components of the system under study. It was found that the calculated dependence of the developed forces on the discharge voltage of the capacitive storage allows an approximate estimate of the efficiency of attraction when operating in the accepted range of energy capabilities of the power source. It is shown that the degree of inhomogeneity of the transverse distribution of attractive forces in the region under study does not exceed ~ 20%. A working experimental model has been designed and created, consisting of a tool for magnetic-pulse attraction of sheet metal and a power source - an energy unit. Based on the obtained ratios, the characteristics of the pilot plant and the test modes were calculated. A dosed magnetic-impulse force action has been practically implemented, which makes it possible to control the deformation of sheet metal in the processing zone. Experiments have been carried out to remove dents on samples made of various types of steel under conditions close to the corresponding real production operation. The practical possibilities of the means of magnetic-pulse attraction of certain sections of sheet metals with “direct current transmission” through them have been successfully demonstrated. The effectiveness of the method under consideration is proved when using the indicators of the technological operation, calculated based on theoretically obtained dependences.Документ The resonant amplifier of the active electrical power with additional voltage source. Suggestions, analysis, numerical estimates(Національний технічний університет "Харківський політехнічний інститут", 2023) Batygin, Yuriy; Gavrilova, Tetyana; Shinderuk, Svitlana; Chaplygin, EvgeniyThe problem of increasing energy saving in industry leads to the need to develop new technical devices. The paper presents and analyzes the circuit of the resonance amplifier of active electric power, evaluates the characteristics of electromagnetic processes for the fundamental substantiation of the operation of real devices based on this circuit. Mathematical analysis of electromagnetic processes taking place was carried out using strict methods of the theory of electric circuits. The advantages of this scheme in comparison with similar previous proposals are shown. The device includes four active-reactive circuits that are inductively connected. The first of them is an input circuit with a harmonic signal source that needs to be amplified. The second circuit generates enhanced reactive power in the "voltage resonance" mode. The third circuit with an additional voltage source provides reactive power output from the second circuit in the "resonance of currents" mode without adverse effects on amplification processes. The fourth circuit, inductively connected to the third circuit, contains an output load ⎼ a resistor that simulates the allocation of active power. On the basis of the analysis and numerical evaluation of the characteristics of the processes taking place in the proposed scheme of the resonance amplifier of active electric power, its basic efficiency is shown. The calculations of the experimental model made it possible to formulate recommendations for the selection of circuit elements of a working resonant amplifier with a high efficiency for low-impedance output loads. The considered real parameters of the device make it possible to minimize the dissipation of the energy of converted electrical signals and to increase the amplification factor of the electric power of harmonic currents and voltage by choosing the element base. The obtained results can be considered as practical recommendations for the creation of real devices for amplifying active electric power for use in various industries.