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J4  2012, Vol. 46 Issue (9): 1702-1707    DOI: 10.3785/j.issn.1008-973X.2012.09.024
电气工程     
反激变流器共模干扰的建模与预测
孟培培,张军明,陈恒林,钱照明
浙江大学 电气工程学院, 浙江 杭州 310027
Modeling and predicting for common mode noise
disturbance in Flyback converter
MENG Pei-pei, ZHANG Jun-ming, CHEN Heng-lin, QIAN Zhao-ming
College of Electrical Engineering, Zhejiang University, Hangzhou 310027,  China
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摘要:

以反激变流器为对象,分析共模干扰的产生与耦合机理,建立共模干扰耦合通路模型.该模型包含共模通路中无源元件的高频阻抗特性、有源元件在不同工作模态下的等效阻抗,以及变压器的分布参数模型.与变压器集中参数模型相比,分布参数模型能够准确地描述变压器中的高频寄生参数,具有更好的高频特性.在Matlab Simulink仿真软件中建立了共模干扰耦合通路仿真模型,并提取该反激变流器共模干扰耦合通路的等效阻抗.利用该共模干扰耦合通路模型可在整个传导频率范围(0150 ~30 MHz)内准确地预测反激变流器所产生的共模干扰,与接收机实测频谱的比较验证了该共模模型的准确性.

Abstract:

After investigation into the common-mode (CM) noise generation and coupling mechanism in Flyback converter, a CM noise coupling path model of Flyback converter was proposed. This model includes the high frequency impedance of passive components in CM noise coupling path, the effective impedance of active components in different working stages, and the distributed parameters model of transformer. Compared with the transformer lumped circuit model, this distributed parameters  model can describe the high frequency parasitical parameters in the transformer precisely, and thus obtain better high frequency characteristics. The CM noise coupling path model was built up by Matlab Simulink software, and the effective impedance of the CM noise coupling path in  the Flyback converter was also extracted. With the  proposed CM noise model proposed in this paper, the CM noise caused by the converter can be predicted precisely in the whole conduction range (0.150 -30 MHz). Comparison between the testing spectrum with EMI receiver and the predicting spectrum verified the proposed CM model.

出版日期: 2012-09-01
:  TM 46  
基金资助:

国家自然科学基金资助项目(50807047,50907061);浙江省自然科学基金资助项目(Y1110120).

通讯作者: 钱照明,男,教授,博导.     E-mail: qian@zju.edu.cn
作者简介: 孟培培(1985 - ),女,博士生,从事电力电子变流器中电磁兼容问题的研究.E-mail: cathleen@zju.edu.cn
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引用本文:

孟培培,张军明,陈恒林,钱照明. 反激变流器共模干扰的建模与预测[J]. J4, 2012, 46(9): 1702-1707.

MENG Pei-pei, ZHANG Jun-ming, CHEN Heng-lin, QIAN Zhao-ming. Modeling and predicting for common mode noise
disturbance in Flyback converter. J4, 2012, 46(9): 1702-1707.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.09.024        http://www.zjujournals.com/eng/CN/Y2012/V46/I9/1702

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