Development of a Contactless Control System for the Vacuum Resistance Furnace Temperature Regulator

  • Дарья [Daria] Александровна [A.] Гапонова [Gaponova]
  • Виктор [Viktor] Петрович [P.] Рубцов [Rubtsov]
  • Алексей [Aleksey] Владимирович [V.] Щербаков [Shcherbakov]
  • Андрей [Andrey] Сергеевич [S.] Булгаков [Bulgakov]
Keywords: vacuum resistance furnace, temperature regulator, contactless control system, current limitation

Abstract

Temperature regulators of vacuum resistance furnaces are considered. Existing temperature regulators are analyzed, and their advantages and drawbacks are pointed out. A functional diagram of a temperature regulator with contactless switching of the transformer winding taps and with current and temperature feedbacks is proposed. The device operating principle is outlined, the load voltage timing diagrams are presented, and a technique for simulating the operation of the regulator actuators implemented by means of thyristors connected to different transformer winding sections and their pulse-phase control system is described.

The temperature regulator mathematical model is developed in the Matlab Simulink software package, which makes it possible to take into account the nonlinear dependence of the heaters resistance on temperature. The model is applied for investigating operation of the system with a proportional- integral temperature controller, which allows the heaviest transients in the furnace startup modes to be studied. According to the proposed technical solution, the control system overall feedback is produced as the sum of the feedback signal and the sum of signals from the current and temperature sensors, an approach that allows the control system configuration to be simplified.

Time dependences of currents and voltages in different circuit parts have been obtained, and the furnace heating control processes have been studied. The specific features and advantages of the developed system are shown.

Information about authors

Дарья [Daria] Александровна [A.] Гапонова [Gaponova]

Engineer of Electric Supply of Industrial Enterprises and Electrical Engineering Dept., NRU MPEI, e-mail: dgaponva@mail.ru

Виктор [Viktor] Петрович [P.] Рубцов [Rubtsov]

Dr.Sci. (Techn.), Professor of Electric Supply of Industrial Enterprises and Electrical Engineering Dept., NRU MPEI, e-mail: RubtsovVP@mpei.ru

Алексей [Aleksey] Владимирович [V.] Щербаков [Shcherbakov]

Dr.Sci. (Techn.), Professor of Electric Supply of Industrial Enterprises and Electrical Engineering Dept., NRU MPEI, e-mail: ShcherbakovAV@mpei.ru

Андрей [Andrey] Сергеевич [S.] Булгаков [Bulgakov]

Student of NRU MPEI, e-mail: andbull@mail.ru

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Для цитирования: Гапонова Д.А., Рубцов В.П., Щербаков А.В., Булгаков А.С. Разработка бесконтактной системы управления регулятором температуры вакуумной печи сопротивления // Вестник МЭИ. 2019. № 2. С. 87—93. DOI: 10.24160/1993-6982-2019-2-87-93.
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For citation: Gaponova D.A., Rubtsov V.P., Shcherbakov A.V., Bulgakov A.S. Development of a Contactless Control System for the Vacuum Resistance Furnace Temperature Regulator. Bulletin of MPEI. 2019;2:87—93. (in Russian). DOI: 10.24160/1993-6982-20192-87-93.
Published
2019-04-01
Section
Electrotechnology (05.09.10)