| 开关电源变压器屏蔽层抑制共模EMI的研究 |
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| 引用本文： | 王亮. 开关电源变压器屏蔽层抑制共模EMI的研究[J]. 低压电器, 2010, 0(15): 35-39 |
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| 作者姓名： | 王亮 |
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| 作者单位： | 华南理工大学,电力学院,广东,广州,510640 |
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| 摘 要： | 以反激式开关电源为例,在分析其高频变压器形成共模传导EMI机理的基础上,探讨了在变压器设计中设置屏蔽层以抑制共模传导EMI的原理。给出了具体的设计方法,并应用于具体产品的设计中。试验测试表明,屏蔽层的设置可以有效地抑制高频开关电源的共模传导EMI。由此进一步研究了屏蔽层在其他类型开关电源中应用的可行性。
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| 关 键 词： | 开关电源 变压器 屏蔽层 共模传导EMI |
Research on Rejection of Transformer Shield to Common-Mode Conducted EMI in Switching Mode Power Supply |
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| WANG Liang. Research on Rejection of Transformer Shield to Common-Mode Conducted EMI in Switching Mode Power Supply[J]. Low Voltage Apparatus, 2010, 0(15): 35-39 |
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| Authors: | WANG Liang |
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| Affiliation: | WANG Liang(College of Electric Power,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | A model to explain the generation of common-mode conductive EMI in transformer of SMPS and method to design shield in transformer were given,taking fly-back as model.Experiments verified that the shield could reduce the common-mode EMI.It could be inferred the model and method could be used in other topologies. |
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| Keywords: | switching mode power supply transformer shield common-mode conducted EMI |
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