Исследование динамических характеристик асинхронных двигателей в электроприводах с согласующими трансформатором и редуктором
Дата
2019
ORCID
DOI
doi.org/10.20998/2074-272X.2019.2.03
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Назва журналу
Номер ISSN
Назва тому
Видавець
Национальный технический университет "Харьковский политехнический институт"
Анотація
Рассмотрено использование разработанных алгоритмов для моделирования динамических режимов двух асинхронных двигателей в электроприводах, работающих на определенную циклограмму нагрузки, при включении согласующих трансформатора и редуктора. Учтено непостоянство параметров схем замещения двигателей, связанное с изменением насыщения магнитных цепей и вытеснением токов в обмотках роторов. Получены и сопоставлены динамические характеристики токов и мощностей, потребляемых двигателями. Зависимости КПД и коэффициента мощности двигателей позволили определить среднециклические энергетические показатели. Найдены массогабаритные и стоимостные показатели вариантов электроприводов, что дало возможность, при известных среднециклических энергетических показателей приводов, рассчитать среднециклические приведенные затраты электроприводов. Обоснована возможность выбора лучшего варианта привода по вышеуказанным показателям, а также по минимуму потерь электроэнергии за год.
The variety of electric drives, the performance characteristics of which correspond to the set requirements of consumers while ensuring reliable and economical operation for a certain time resource, characterizes the variety of circuit solutions, including using matching transformers and reducers. The use of matching transformers and reducers units significantly changes the performance characteristics of the electric drive. Most articles are devoted to modeling an electric drive without such elements. It is advisable to consider simulations of electric drives using these elements. In the models of matching transformers and reducers, the initial data are used, which determine both the functional properties and the mass and size parameters. The latter provide an opportunity to consider the economic aspects of the electric drive. For the correct calculation of the energy balance of the electric drive, the efficiency of the elements under consideration is taken into account. The use of the developed algorithms for modeling the dynamic modes of two induction motors in electric drives operating on a specific load diagram, with the connection of a matching transformer and reducers, is considered. Dependencies of efficiency and power factor of motors have allowed to determine the medium cyclic energy indicators. The mass- size and cost indicators of variants of electric drives were found, which made it possible to calculate the average cyclic reduced costs of electric drives. The possibility of choosing the best variant of the drive based on various indicators, including the minimum amount of energy losses per year, is substantiated.
The variety of electric drives, the performance characteristics of which correspond to the set requirements of consumers while ensuring reliable and economical operation for a certain time resource, characterizes the variety of circuit solutions, including using matching transformers and reducers. The use of matching transformers and reducers units significantly changes the performance characteristics of the electric drive. Most articles are devoted to modeling an electric drive without such elements. It is advisable to consider simulations of electric drives using these elements. In the models of matching transformers and reducers, the initial data are used, which determine both the functional properties and the mass and size parameters. The latter provide an opportunity to consider the economic aspects of the electric drive. For the correct calculation of the energy balance of the electric drive, the efficiency of the elements under consideration is taken into account. The use of the developed algorithms for modeling the dynamic modes of two induction motors in electric drives operating on a specific load diagram, with the connection of a matching transformer and reducers, is considered. Dependencies of efficiency and power factor of motors have allowed to determine the medium cyclic energy indicators. The mass- size and cost indicators of variants of electric drives were found, which made it possible to calculate the average cyclic reduced costs of electric drives. The possibility of choosing the best variant of the drive based on various indicators, including the minimum amount of energy losses per year, is substantiated.
Опис
Ключові слова
циклограмма нагрузки, математическая модель, среднециклические критерии, энергетические показатели, приведенные затраты, load cyclogram, mathematical model, average cyclic criteria, energy indicators, reduced costs
Бібліографічний опис
Исследование динамических характеристик асинхронных двигателей в электроприводах с согласующими трансформатором и редуктором / В. C. Петрушин [и др.] // Електротехніка і Електромеханіка = Electrical engineering & Electromechanics. – 2019. – № 2. – С. 14-20.