Многозонный преобразователь переменного напряжения. Ч. 1. Анализ регулировочных характеристик
Аннотация
Статья посвящена исследованиям многозонного преобразователя на базе классического регулятора переменного напряжения. Представлен аналитический вывод регулировочной характеристики классического низкочастотного тиристорного регулятора. Исследовано влияние повышения частоты коммутации силовых ключей на качество напряжения нагрузки при замене тиристоров на транзисторы и проанализировано влияние вида опорных сигналов на регулировочные характеристики в системе импульсно-фазового управления. С помощью метода коммутационных функций проведен математический расчёт регулировочных характеристик многозонного транзисторного преобразователя переменного напряжения. С помощью имитационного моделирования получены зависимости действующего значения выходного напряжения и его основной гармоники от глубины модуляции. Приведены зависимости суммарного коэффициента гармонических составляющих выходного напряжения многозонного преобразователя с варьируемым количеством зон. Предложены рекомендации по выбору оптимального количества зон в структуре регулятора. Замена трансформатора на ёмкостные делители напряжения позволяет как уменьшить массогабаритные показатели регулятора, так и скомпенсировать потребляемую реактивную мощность, тем самым улучшив электромагнитную совместимость с напряжением питающей сети. Топологию многозонного преобразователя переменного напряжения можно реализовать как в однофазном, так и в трёхфазном исполнении, а значит допустимо его функциональное использование в качестве компенсатора несимметрии напряжения.
Литература
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Исследование выполнено за счет гранта Российского научного фонда № 23-29-10055, https://rscf.ru/project/23-29-10055/, за счет финансовой поддержки от Правительства Новосибирской области, соглашение № р-67
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36. Jamil Asghar M.S. Three-Phase Dynamic AC Braking of Induction Motors by Discontinuous Phase-Controlled Switching. – International Conference on Power, Instrumentation, Energy and Control, 2023, DOI: 10.1109/PIECON56912.2023.10085833
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The study was financially supported by the Russian Science Foundation, grant No. 23-29-10055, https://rscf.ru/project/23-29-10055/, with financial support from the Government of the Novosibirsk Region, agreement No. r-67