【作者】 刘薇；

【导师】 胡海兵；

【作者基本信息】 南京航空航天大学 ， 电力电子与电力传动， 2013， 硕士

【摘要】 正激变换器由于具有较高的可靠性和效率，广泛地应用于航天器等工作于空间辐照和强电磁环境下的电源供电系统等领域。本文研究给出了宽输入电压范围正激变换器开关单元的形式，给出利用基本单元组合生成宽输入范围正激变换器的方法，并推导出了RCD正激变换器拓扑族、有源箝位正激变换器拓扑族；接着论文对RCD正激变换器拓扑族中两种典型的新型拓扑分别进行了研究，由于这两种拓扑中的RCD单元仅补偿磁复位电压，因此其损耗相对于传统RCD正激变换器明显降低，整机效率得到很大改善，论文详细分析了其工作原理和特性，给出关键功率参数设计方法，并分别制作了实验样机进行实验验证，实验结果验证了原理分析的正确性，表明拓扑具有适应于宽输入电压范围、电压应力低、效率高等优点，同时也验证了用宽范围开关单元生成新型正激变换器方法的正确性；然后论文对有源箝位正激变换器拓扑族中的两种新型拓扑分别进行了研究，详细分析了其工作原理和特性，并分别设计制作实验样机，实验结果验证了原理分析的正确性，表明这两种拓扑具有适应于宽输入电压场合，效率高、电压应力低等特点。更多还原

【Abstract】 Forward converter is widely used in spacecraft power supply system which is under strongradiation and electromagnetic environment for its high reliability and efficiency.In this paper, the basic form of wide-input-voltage forward converter cell is presented based on thepre-research by our research team. And some realization methods of the forward cells are analyzed.Then the methods of generating wide-input-voltage forward converter based on wide-input-voltageforward cells are summrised. A class of RCD forward converter and a class of active-clamp forwardconveter are presented. In the next chapter, the operating principles and characteristic of two of theRCD forward topologies are analyzed in detail. Then the design of the prototypes is presented. Theresults of experiment show that the method of researching topology is correct and the topologies arehave the advantages such as suitable for wide input voltage application, low voltage stress, highefficiency and so on. At last, the operating principles and characteristic of two of the active-clampforward converters are analyzed in detail. The results of experiments verify the analysys of theoperating principle. The topologies have the advantages such as suitable for wide input voltageapplication, low voltage stress, high efficiency and so on.更多还原