等效电路
电容
噪声温度
有效输入噪声温度
泰文定理
变压器
噪音(视频)
电子工程
电气工程
噪声发生器
噪声测量
物理
电压
工程类
计算机科学
噪声系数
声学
噪声地板
降噪
相位噪声
放大器
人工智能
图像(数学)
量子力学
CMOS芯片
电极
作者
Lihong Xie,Xinbo Ruan,Zhihong Ye
出处
期刊:IEEE Transactions on Industrial Electronics
[Institute of Electrical and Electronics Engineers]
日期:2016-05-01
卷期号:63 (5): 2913-2924
被引量:46
标识
DOI:10.1109/tie.2016.2517064
摘要
The interwinding capacitance of the transformer and the primary-side circuit nodes to ground capacitance are critical coupling path for common-mode (CM) noise in isolated power converters. In order to analyze the CM noise, the transformer interwinding capacitance is usually equivalent to lumped capacitance. In this paper, a generalized lumped capacitance model for constructing the CM noise equivalent circuit that is valid at low frequencies is derived. By simplifying the CM noise equivalent circuit based on Thevenin's theorem, the equivalent noise source (ENS) for CM noise is proposed. The ENS is expressed by a linear combination of voltages in the converter, where the coefficients of these voltages are determined by transformer winding structure and the circuit configuration. With the help of ENS, the CM noise of the converter under different circuit configuration can be systematically analyzed and conveniently compared, which develops an effective reference for selecting a proper circuit configuration. Finally, the lumped capacitance model and the ENS for CM noise are verified by the experimental results.
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