Кафедра "Загальна електротехніка"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/2838

Офіційний сайт кафедри http://web.kpi.kharkov.ua/ze

Кафедра "Загальна електротехніка" заснована в 1931 році на базі електротехнічного факультету.

Курс електротехніки як самостійної дисципліни першим почав читати Клобуков Микола Петрович ще в 1892 році. Першим завідувачем кафедри був професор Копняєв Павло Петрович.

Кафедра входить до складу Навчально-наукового інституту енергетики, електроніки та електромеханіки Національного технічного університету "Харківський політехнічний інститут" .

У складі науково-педагогічного колективу кафедри працюють: 2 доктора технічних наук, 5 кандидатів технічних наук; 2 співробітника мають звання професора, 3 – доцента.

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Фільтри

2017 - 201912020 - 20213

Налаштування

ORCID: search.filters.orcid.https://orcid.org/0000-0001-9115-7828Ключові слова: search.filters.subject.mathematical model

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Зараз показуємо 1 - 4 з 4
  • Ескіз
    Документ
    Influence of an excitation source on the power indicators of a linear pulse electromechanical converter of induction type
    (Інститут електродинаміки НАН України, 2021) Bolyukh, V. F.; Shchukin, I. S.
    The purpose of the article is to evaluate the efficiency of an induction-type linear pulse electromechanical converter (LPEC) when operating in shock-power mode and excitation from an alternating voltage source (AVS) in comparison with excitation from a capacitive energy storage (CES). A mathematical model of an induction-type LPEC has been developed both when excited by a unipolar pulse from a CES and from an AVS using lumped parameters of the windings, which takes into account the interrelated electromagnetic, mechanical and thermal processes. It has been found that when the LPEC is excited from the AVS with a voltage frequency of 50 Hz, the electrodynamic force takes on a periodic decaying character with a significant prevalence of positive components of forces over negative ones. The maximum value of the force is much less, and the value of its impulse is much greater than in the LPEC, excited from the CES. With an increase in the frequency of the AVS voltage from 50 to 150 Hz, the highest value of the current density of the inductor winding decreases, and in the armature winding it increases. The greatest values of force and impulse of force are realized at a voltage frequency of 150 Hz. With an increase in the AVS frequency, the relative indicator of the efficiency of the LPEC increases.
  • Ескіз
    Документ
    Excitation of a pulse electromechanical converter of electrodynamic type from a two-section capacitor energy storage
    (Інститут електродинаміки НАН України, 2021) Bolyukh, V. F.
    A mathematical model of a pulsed electromechanical converter (PEC) of electrodynamic type has been developed, in which the solutions of the equations are presented in a recurrent form, which, when numerically implemented, allows taking into account the interrelated electrical, magnetic, mechanical and thermal processes and their nonlinear parameters. While maintaining the total energy of the pulsed source, the influence of the distribution of energy between the two sections of the capacitive energy storage (CES) and the voltage at which the additional section of the CES is connected was established. When operating in an accelerating mode, the largest amplitude of electrodynamic forces (EDF) and maximum speed occur in the basic version of the PEC, which is excited only from the main section of the CES, and the most effective is the PEC with the smallest capacity of the main section of the CES, and its maximum value is 2.61 higher than for the basic version of the PEC. When operating in the shock-power mode, compared with the basic version of the PEC, the amplitude of the EDF decreases. The most effective is the PEC with the smallest capacity of the main section of the CES, and its maximum value is 5.17 higher than that of the basic version of the PEC. Experimental studies of the PEC in the shock-power mode established that the oscillograms of the voltage of the CES and the current of the PEC correspond to the calculated characteristics, and their main indicators are consistent with each other with an accuracy of 5-7%.
  • Ескіз
    Документ
    Effect of electric conducting element on indicators of linear pulse electromechanical converter induction type
    (Інститут електродинаміки НАН України, 2020) Bolyukh, V. F.
    The purpose of the article is to study the influence of geometric parameters and the location of a coaxially located electrically conductive element (ECE), made in the form of a thin-walled disk, ring or hollow cylinder, on the characteristics and performance of an induction-type linear pulse electromechanical converter (LPEC). A mathematical model has been developed that describes the electromechanical and thermal processes in an induction-type LPEC using the concentrated parameters of active elements. It is shown that the ECE, coaxially mounted near the inductor winding, has a negative effect on the performance of the LPEC. The smallest value of the converter efficiency of 6.1% occurs when ECE is used in the form of a thin copper disk 0.5 mm high, in which the radial dimensions are similar to the sizes of the windings of the inductor and the armature installed at a minimum distance from the inductor. Moreover, the temperature rise of the electrically conductive element is maximum and equal to 51°С. With an increase in the thickness of the ECE and with its removal from the inductor, the efficiency of the LPEC increases, and the excess of the temperature of the ECE decreases. When removing a disk ECE with a height of 1.0 mm at a distance of 10 mm from the inductor, the efficiency of the LPEC is 12.6%, and the excess of the ECE temperature is 6 °C.
  • Ескіз
    Документ
    Theoretical and experimental study of linear impulse induction type electromechanical converter
    (Симфонія форте, 2017) Bolyukh, V. F.; Kocherga, O. I.