| 反激式开关电源共模传导发射模型的分析与应用 |
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| 引用本文： | 林思聪,陈为. 反激式开关电源共模传导发射模型的分析与应用[J]. 电气应用, 2005, 24(2): 119-122 |
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| 作者姓名： | 林思聪 陈为 |
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| 作者单位： | 福州大学电气工程及自动化学院,350002;福州大学电气工程及自动化学院,350002 |
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| 摘 要： | 以反激式开关电源为研究对象,分析了其共模传导噪声的干扰源、传输通道以及变压器分布电容参数对共模噪声的作用,建立相应的共模传导发射分析模型和变压器分布电容模型;重点分析了二次侧干扰源的影响及其作用机理,提出了一种简单但有效降低共模传导噪声的方法,并进行了实验验证。
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| 关 键 词： | 开关电源 共模传导噪声 变压器分布电容 |
| 修稿时间： | 2004-07-21 |
Analysis and Application of Common-mode EMI Model of a Flyback Switch Mode Converter |
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| Lin SicongFuzhou University. Analysis and Application of Common-mode EMI Model of a Flyback Switch Mode Converter[J]. Electrotechnical Application, 2005, 24(2): 119-122 |
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| Authors: | Lin SicongFuzhou University |
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| Affiliation: | Lin SicongFuzhou University |
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| Abstract: | Common-mode ( CM ) noise sources and its conduction paths of a flyback switch mode power supply areanalyzed. The influence of stray capacitances of the transformer on CM noise is also analyzed in details. Based on above analysis, models of C M emission and stray capacitance of transformer are built respectively. More attention is paid on the effect of secondary side noise source and its mechanism. A simple but effective method to reduce CM noise is introduced. The above analysis and models have been verified by experiments. |
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| Keywords: | switch mode power supply common-mode conduction noise stray capacitance of transformer |
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