
Тема выпуÑкной квалификационной работы: «Разработка полупроводникового Ð¾Ð³Ñ€Ð°Ð½Ð¸Ñ‡Ð¸Ñ‚ÐµÐ»Ñ Ñ‚Ð¾ÐºÐ° короткого Ð·Ð°Ð¼Ñ‹ÐºÐ°Ð½Ð¸Ñ 210 кРна поÑтоÑнном напрÑжении 0,6 кВ». Ð”Ð°Ð½Ð½Ð°Ñ Ñ€Ð°Ð±Ð¾Ñ‚Ð° поÑвÑщена выполнению разработки полупроводникового Ð¾Ð³Ñ€Ð°Ð½Ð¸Ñ‡Ð¸Ñ‚ÐµÐ»Ñ Ñ‚Ð¾ÐºÐ° короткого замыканиÑ, в чаÑтноÑти тока короткого Ð·Ð°Ð¼Ñ‹ÐºÐ°Ð½Ð¸Ñ 210кРдо тока 20-30кРв течении 400мÑ. Задачи, которые решалиÑÑŒ в ходе иÑÑледованиÑ: 1. Разработка принципиальной Ñхемы полупроводникового Ð¾Ð³Ñ€Ð°Ð½Ð¸Ñ‡Ð¸Ñ‚ÐµÐ»Ñ Ñ‚Ð¾ÐºÐ°. 2. Моделирование работы Ñхемы в нормальном режиме и в режиме Ð¾Ð³Ñ€Ð°Ð½Ð¸Ñ‡ÐµÐ½Ð¸Ñ Ñ‚Ð¾ÐºÐ° короткого замыканиÑ. 3. Выбор Ñлементов Ñхемы на оÑновании результатов моделированиÑ. 4. Ðнализ Ñхемы на наличие перенапрÑжений на коммутационных уÑтройÑтвах и ÑпоÑобов защиты от них. 5. Оценка тепловой Ñнергии, выделÑющейÑÑ Ð½Ð° компонентах Ñхемы. 6. Ðнализ перÑпективных путей Ñ€Ð°Ð·Ð²Ð¸Ñ‚Ð¸Ñ ÑƒÑтройÑтва. 7. Ðнализ ÑпоÑобов параллельного Ð¿Ð¾Ð´ÐºÐ»ÑŽÑ‡ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð»ÑƒÐ¿Ñ€Ð¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¾Ð²Ñ‹Ñ… уÑтройÑтв. Работа проведена на оÑнове Ð¸Ð·ÑƒÑ‡ÐµÐ½Ð¸Ñ Ð¾ÑобенноÑтей работы полупроводниковых уÑтройÑтв. Ð’ результате работы была получена Ñхема уÑтройÑтва полупроводникового Ð¾Ð³Ñ€Ð°Ð½Ð¸Ñ‡Ð¸Ñ‚ÐµÐ»Ñ Ñ‚Ð¾ÐºÐ°, разработан алгоритм управлениÑ. Получены оÑциллограммы токов и напрÑжений по результатам Ð¼Ð¾Ð´ÐµÐ»Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ Ñхемы в различных режимах работы. Выбраны компоненты Ñхемы. Выбрана ÑиÑтема Ð´Ð»Ñ Ð·Ð°Ñ‰Ð¸Ñ‚Ñ‹ от перенапрÑжений на коммутирующих уÑтройÑтвах. Оценены тепловые режимы Ñхемы. Разработаны рекомендации Ð´Ð»Ñ Ð¿Ñ€Ð¾Ð¸Ð·Ð²Ð¾Ð´Ñтва и уÑовершенÑÑ‚Ð²Ð¾Ð²Ð°Ð½Ð¸Ñ Ñхемы.
The subject of the graduate qualification work is "Development of a semiconductor short-circuit current limiter 210 kA at a direct voltage of 0.6 kV". The given work is devoted to the development of a semiconductor short-circuit current limiter, in particular, a short-circuit current of 210 kA up to a current of 20-30 kA for 400ms. Tasks that were solved in the course of the study: 1. Development of a scheme of a semiconductor current limiter. 2. Simulation of the operation of the circuit in the normal mode and in the mode of limiting the short-circuit current. 3. Selection of circuit elements based on simulation results. 4. Analysis of the circuit for the presence of overvoltage on switching devices and methods of protection against them. 5. Estimation of thermal energy released on circuit components. 6. Analysis of promising ways of device development. 7. Analysis of methods for parallel connection of semiconductor devices. The work was fulfilled on the basis of studying the features of the operation of semiconductor devices. As a result of the work, a scheme of the device of a semiconductor current limiter was obtained, a control algorithm was developed. Oscillograms of currents and voltages are obtained based on the results of circuit simulation in various operating modes. Schematic components selected. A system for overvoltage protection on switching devices has been selected. The thermal regimes of the scheme are estimated. Recommendations for the production and improvement of the circuit have been developed.
пеÑенапÑÑжение, overvoltage, вÑÐ±Ð¾Ñ ÑлеменÑов, semiconductor device, current limiter, circuit simulation, selection of elements, ÐлекÑÑиÑеÑкий Ñок поÑÑоÑннÑй, моделиÑование ÑÑ ÐµÐ¼Ñ, Токи коÑоÑкого замÑканиÑ, огÑаниÑиÑÐµÐ»Ñ Ñока, полÑпÑоводниковое ÑÑÑÑойÑÑво
пеÑенапÑÑжение, overvoltage, вÑÐ±Ð¾Ñ ÑлеменÑов, semiconductor device, current limiter, circuit simulation, selection of elements, ÐлекÑÑиÑеÑкий Ñок поÑÑоÑннÑй, моделиÑование ÑÑ ÐµÐ¼Ñ, Токи коÑоÑкого замÑканиÑ, огÑаниÑиÑÐµÐ»Ñ Ñока, полÑпÑоводниковое ÑÑÑÑойÑÑво
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