基于电磁仿真软件的平面变压器共模电磁干扰建模方法及其应用

doi:10.19595/j.cnki.1000-6753.tces.191368

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Abstract The traditional transformer model is mostly a lumped capacitance model. There is a large deviation between the frequency model characteristics and the actual measurement above 10MHz. It is difficult to reflect the high-frequency electro-magnetic interference (EMI) characteristics of the transformer. In this paper, the S21 parameter was used to measure the common mode EMI performance of transformers. The high-frequency 3D modeling method of planar transformer was studied. The accuracy of the 3D modeling method was verified by actual tests. The modeling method was applied to the common mode EMI performance evaluation and optimization design of a high-frequency transformer. From the aspects of manufacturing process level and material property parameters, the key factors affecting the consistency of common mode S21 parameters of transformers were analyzed, and the quality control bias was provided to improve the consistency of product performance.

Key words： Transformer 3D model common mode electro-magnetic interference CST software sensitivity analysis

Received: 22 October 2019

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TM15

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	Articles by authors
	Gao Lu
	Xu Ce
	Dong Guangdong
	Gong Chunying
	Zhang Fanghua

Cite this article:

Gao Lu,Xu Ce,Dong Guangdong等. Common Mode Electro-Magnetic Interference Modeling Method of Planar Transformers Based on CST Software and Its Application[J]. Transactions of China Electrotechnical Society, 2020, 35(24): 5057-5063.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191368 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I24/5057

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