Обоснование параметров преобразователя постоянного тока для источника автономного электро-снабжения
Аннотация
С внедрением концепции Smart Grid в развитие электроэнергетики нарастает интерес к использованию DC/DC-преобразователей для координированной работы на одну систему шин постоянного тока разнотипных источников питания, имеющих в своем составе источники возобновляемой энергии, накопители электроэнергии (аккумуляторные батареи, модули суперконденсаторов), различную нагрузку. В статье выполнен анализ DC/DC-преобразователей для систем автономного электроснабжения. Обосновано применение преобразователя типа SEPIC (Single Ended Primary Inductance Converter). Представлена методика определения параметров преобразователя. Продемонстрирована и обоснована регулировка активного периода коэффициента заполнения в соответствии с теоретическим поведением после изменения входного напряжения выше и ниже желаемого выходного значения. Выполнено моделирование работы преобразователя в режимах повышения, понижения и стабилизации выходного напряжения в пакете MATLAB / Simulink. Полученные результаты моделирования показывают эффективность предлагаемого решения для источника автономного электроснабжения.
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