Abstract：To improve power factor and reliability of AC power supply, an AC-DC power converter based on magnetic-combination transformer is proposed in this paper. Instead of input AC sources in electric form, the proposed converter combines input AC source in magnetic form by adding up the produced magnetic flux from three magnetic cores of the coupled transformers. According to the instantaneous power balancing principle of three-phase circuit and the mutual difference of 120° for three-phase AC source, this topology adopts film capacitor and makes input current sinusoidal. This converter can achieve spontaneous PFC and improve power factor and power density. The simulation and experimental prototype of 1kW verify the theoretical analysis and the feasibility of the converter.
李春杰, 黄文新, 李朋, 樊长鑫. 一种基于磁组合式变压器的AC-DC高频变换器[J]. 电工技术学报, 2016, 31(8): 19-26.
Li Chunjie, Huang Wenxin, Li Peng, Fan Changxin. An AC-DC High Frequency Converter Based on Magnetic-Combination Transformer. Transactions of China Electrotechnical Society, 2016, 31(8): 19-26.
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