Advances in Modeling and Reduction of Conducted and Radiated EMI in Non-isolated Power Converters

Juntao Yao, Yanwen Lai, Zhedong Ma, Shuo Wang
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引用次数: 14

Abstract

Electromagnetic interference (EMI) in non-isolated power converters is regulated by extensive standards in many applications. EMI modeling and reduction research is key to develop solutions to achieve EMI compliance. For conducted EMI, there are lots of techniques to analyze noise sources, propagation paths, parasitic couplings, and so on, which are summarized in this survey. Fundamental and general techniques to investigate and to reduce conducted EMI are analyzed. Moreover, in the high switching frequency era and with increasing applications of wide bandgap devices, radiated EMI is becoming an inevitable challenge. Modeling and reduction of radiated EMI, therefore, is becoming an important topic. Recent advances in radiated EMI research for non-isolated power converters are summarized and analyzed. Future EMI research development is discussed.
非隔离电源变换器中传导和辐射电磁干扰的建模与降低研究进展
在许多应用中,非隔离电源变换器中的电磁干扰(EMI)受到广泛的标准控制。电磁干扰建模和减少研究是开发解决方案以实现电磁干扰合规的关键。对传导电磁干扰的噪声源、传播路径、寄生耦合等分析技术进行了综述。分析了研究和减少传导电磁干扰的基本技术和一般技术。此外,在高开关频率时代,随着宽带隙器件的应用越来越广泛,辐射电磁干扰已成为一个不可避免的挑战。因此,辐射电磁干扰的建模和减小成为一个重要的课题。对非隔离型电源变换器辐射电磁干扰的最新研究进展进行了总结和分析。展望了未来电磁干扰研究的发展方向。
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