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 Forward- Flyback Integrated Converter with Voltage Clamping and Soft-switching
Tác giả hoặc Nhóm tác giả: Tsorng-Juu Liang, Kim Kien Nghiep Huynh, Kai-Hui Chen, Wen-Yu Hoang, Thai Anh Au Tran
Nơi đăng: IEEE Transactions on Power Electronics (SCIE-Q1); Số: 1;Từ->đến trang: 1 - 11;Năm: 2024
Lĩnh vực: Khoa học công nghệ; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
Recently, telecommunication, information and communication technology equipment (ICT) and cloud-based applications are gaining more attention. The above applications all require an isolated step-down converter to convert power from the high voltage dc bus. In this paper, a novel isolated converter is proposed to fulfil the requirements of high efficiency power conversion. The proposed converter is constructed with two coupled inductors connected in series with opposite polarity, two main switches and dc blocking capacitor on primary side, two output diodes on secondary side. It can achieve soft switching for main switches and output diodes, while output current is shared between diodes without additional inductor on secondary side for high efficiency. Finally, an experimental prototype is built to verify the theoretical analysis, with input voltage of 400 V, output voltage range of 36∼48 V, and rated power of 360 W. The highest efficiency reached is 96.6%.
ABSTRACT
Recently, telecommunication, information and communication technology equipment (ICT) and cloud-based applications are gaining more attention. The above applications all require an isolated step-down converter to convert power from the high voltage dc bus. In this paper, a novel isolated converter is proposed to fulfil the requirements of high efficiency power conversion. The proposed converter is constructed with two coupled inductors connected in series with opposite polarity, two main switches and dc blocking capacitor on primary side, two output diodes on secondary side. It can achieve soft switching for main switches and output diodes, while output current is shared between diodes without additional inductor on secondary side for high efficiency. Finally, an experimental prototype is built to verify the theoretical analysis, with input voltage of 400 V, output voltage range of 36∼48 V, and rated power of 360 W. The highest efficiency reached is 96.6%.
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