开关电源电磁干扰及其抑制技术的分析

Analysis on the Electromagnetic Interference of the Switching Power Supply and Its Suppression Technology

论文的研究内容是明确开关电源产生电磁干扰的危害以及电磁干扰的作用原理,通过分析研究相应的抑制技术,提高开关电源对电磁干扰的阻抗水平。通过论文的研究得知,阻抗电磁干扰可采用的抑制技术可以从滤波抑制、软开关抑制、屏蔽抗干扰、共模电磁干扰的有源抑制四个方面着手,希望论文的研究能够为我国相关电气工作者提供参考性意见。

The research content of this paper is to make clear the harm of electromagnetic interference caused by switching power supply and the action principle of electromagnetic interference, and to improve the impedance of switching power supply to electromagnetic interference by analyzing and studying the corresponding suppression technology. According to the study of this paper, we know that the suppression technology can be used in the impedance electromagnetic interference from the filter suppression, soft switching suppression, shielding anti-interference, the active suppression of common-mode electromagnetic interference. It is hoped that this study can provide reference for the relevant electrical workers in China.