高频开关电源电路设计中EMC问题的初步探讨.doc

毕 业 论 文
学生姓名
学 号
院 (系)
专 业
电子信息科学与技术
题 目
高频开关电源电路设计中EMC
问题的初步探讨
指导教师

年
月
摘 要：高频开关电源因体积小、功率因数较大等优点，在通信、控制、计算机等领域应用广泛。但由于会产生电磁干扰，其进一步的应用受到一定程度上的限制。本文阐述了电磁兼容——EMC的基本概念和高频开关电源电路的组成及其特点，介绍了电磁干扰对电子设备的危害，针对高频开关电源的工作特点，分析了电磁干扰产生的机理，提出了应采取的相应抑制措施。通过这些方法的实施，从而提高了开关电源的电磁兼容性。
关键词：高频开关电源,电磁兼容，电磁干扰,抑制

Abstract: High frequency switching power supply for small and large power factor advantages, such as communications, control, and computer fields are widely used. However, cause electromagnetic interference, the further application of the restrictions are to some extent. In this paper, electromagnetic compatibility - EMC basic concepts and high-frequency switching power supply circuit of the composition and characteristics of electromagnetic interference introduced damage to electronic equipment, high frequency switching power supply for the working characteristics of the electromagnetic interference generated by the mechanismproposed suppression measures should be taken switching power supply electromagnetic compatibility has been enhanced through the implementation of these methods .
Keywords: high-frequency switching power supply,EMC, EMI, suppression
目 录
1引言………………………………………………………………………………4
2什么是电磁兼容性……………………………………………………………4
3电磁干扰的危害………………………………………………………………5
4电磁干扰三要素………………………………………………………………6
5高频开关电源的组成及其特点…………………………………………………6
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6高频开关电源电磁干扰的产生…………………………………………………8
7高频开关电源的电磁兼容性设计 ……………………………………………9
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结束语……………………………………………………………………………16
参考文献…………………………………………………………………………17
致谢……………………………………………………………………………