Заглавие:Моделиране на лабораторни изследвания на трансформатори с използване на MATLAB/SIMULINK
Автор:Спасов, Радослав; Spasov, RadoslavДата:2009Резюме:This article describes MATLAB/Simulink realization of open-circuit and short-circuit tests of Electric Machinery that are performed to identify equivalent circuit parameters. These simulation models are developed to support and enhance electric machinery education at the undergraduate level. The proposed tests have been successfully integrated ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Оптимизиране на огледални оптични системи с отчитане на многократните отражения между лампата и рефлектора
Автор:Василев, Христо; Vassilev, Hristo; Ангелов, Ангел; Angelov, AngelДата:2009Резюме:A optimization problem of specular reflectors is disused in the present paper. Comparison between different possible shapes of the reflectors got from different standard curves or combination of the standard curves. Accessible material is used for specular reflection with different reflection factors. For optimization a mathematical model ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Дифузен светодиоден осветител
Автор:Василев, Христо; Vasilev, Hristo; Георгиев, Вълчан Тодоров; Gueorgiev, Valchan Todorov; Ганчев, Ганчо; Ganchev, GanchoДата:2009Резюме:A LED luminaire with diffused light is discussed. The construction and the principle of operation of the luminaire are illustrated. The efficiency of the luminaire and the uniformity of the brightness of its illuminating surface are estimated. An influence of luminaire parameters is studied over 2d model.Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Особености при регулирането на реактивното натоварване на минивец
Автор:Цонева, Деница; Tsoneva, Denitza; Цолов, Ангел Белчев; Tzolov, Angel Belchev; Крумов, Андрей Христов; Krumov, Andrei HristovДата:2009Резюме:The article considers an algorithm of the excitation regulator of synchronous generators by mini-hydro. The aim is to provide optimum economic parameters, consistent with dynamically changing requirements of the electric companies. Integral method is introduced to maintain the power factor. The proposed method ensures stable work of the ...Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие:Разпределение на реактивното натоварване на синхронни генератори от една електрическа централа при различни принципи на регулиране – математически модел
Автор:Цонева, Деница; Tsoneva, Denitza; Цолов, Ангел Белчев; Tzolov, Angel Belchev; Крумов, Андрей Христов; Krumov, Andrei HristovДата:2009Резюме:The article examined a mathematical model to work as a regulator of excitation of synchronous generators from mini hydro power stations (SHPP). It is provided an opportunity for a full examination of all possible modes of synchronous generators by a power plant. Analysis of captured typical working and emergency procedures and results of ...Библиотека:
