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正激式开关电源传导电磁干扰研究 被引量：1

Study on Conducted EMI in Forward Switching Power
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摘要 随着开关电源向高频化、集成化方向发展,其电磁干扰问题的研究显得越来越重要。本文以正激式开关电源为对象,建立了电源传导电磁干扰模型,分析了主要的干扰源和干扰耦合路径,使用PSpice软件仿真分析了电路参数对电磁干扰的影响。根据分析提出了反相抵消和加无损缓冲网络的方法,以改善电源的传导EMI,并进行了验证,证明了方法的有效性。 With the development of switching power supply to the direction of high-frequency and integration,the study on its Electro-Magnetic Interference（EMI） has become increasingly important.A conducted EMI analysis model was established for forward switching power supply,and the main sources of interference and interference coupling paths were analyzed.The software Pspice was used to analyze the effect of circuit parameters on EMI.According to result of the analysis,the methods of RP-offset and adding lossless network buffer were proposed to improve the conducted EMI of switching power.Simulation result verified the effectiveness of the method.
作者 谢静 陈少昌 龙宏波
机构地区 海军工程大学电子工程学院
出处 《电光与控制》 北大核心 2011年第5期80-84,共5页 Electronics Optics & Control
关键词 开关电源 电磁兼容 传导EMI PSPICE switching power supply EMC conducted EMI PSpice
分类号 V271.4 [航空宇航科学与技术—飞行器设计] TM91 [电气工程—电力电子与电力传动]
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电光与控制
2011年 第5期

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