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Analysis and Evaluation of Conducted Common-mode Interference of High-frequency Transformer
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Kaining FU1, 2, Jiangtao TU1, Wei CHEN3
Journal of Power Supply | 2024, 22(5) : 37 - 43
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Journal of Power Supply | 2024, 22(5): 37-43
• Special Issue on Electromagnetic Compatibility in Power Electronic Systems •
Analysis and Evaluation of Conducted Common-mode Interference of High-frequency Transformer
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Kaining FU1, 2, Jiangtao TU1, Wei CHEN3
Affiliations
  • 1 School of Electrical Engineering and Automation Xiamen University of Technology Xiamen 361024 China
  • 2 Xiamen Key Laboratory of High-end Power Equipment and Intelligent Control Xiamen 361024 China
  • 3 College of Electrical Engineering and Automation Fuzhou University Fuzhou 350108 China
Published: 2024-09-30 doi: 10.13234/j.issn.2095-2805.2024.5.37
Outline
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An evaluation platform for the CM noise suppression characteristics of high-frequency transformer was established, which was suitable for batch applications in engineering. The conduction mechanism of common-mode (CM) noise in a transformer was analyzed, and the conduction characteristics of CM noise along the coupling path in the transformer was investigated for evaluating the transformer's capability of suppressing the CM noise. First, a function generator was used to generate a high-frequency voltage pulsation signal, which was assigned on the primary winding of the transformer to simulate the transmission characteristics of CM noise. Then, an oscilloscope was used to capture the voltage drop generated by the CM signal on the sampling resistor to judge the suppression effect of the transformer on the CM noise, so as to analyze the influence of the sampling resistor selection on the evaluation results. The effectiveness of the proposed evaluation method for the CM noise suppression characteristics of transformer was verified by comparing the evaluation results with the test results of conducted electromagnetic interference spectrum.

High-frequency transformer  /  common-mode (CM)  /  capacitive coupling  /  electromagnetic interference
Kaining FU, Jiangtao TU, Wei CHEN. Analysis and Evaluation of Conducted Common-mode Interference of High-frequency Transformer[J]. Journal of Power Supply, 2024 , 22 (5) : 37 -43 . DOI: 10.13234/j.issn.2095-2805.2024.5.37
Funding
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  • National Natural Science Foundation of China(51777036)
  • National Science Foundation of Xiamen, China(3502Z202372043)
Appendix
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Year 2024 volume 22 Issue 5
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Article Info
doi: 10.13234/j.issn.2095-2805.2024.5.37
  • Receive Date：2024-03-28
  • Online Date：2025-07-20
  • Published：2024-09-30
Article Data
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History
  • Received：2024-03-28
  • Accepted：2024-07-24
Funding
National Natural Science Foundation of China(51777036)
National Science Foundation of Xiamen, China(3502Z202372043)
Affiliations
    1 School of Electrical Engineering and Automation Xiamen University of Technology Xiamen 361024 China
    2 Xiamen Key Laboratory of High-end Power Equipment and Intelligent Control Xiamen 361024 China
    3 College of Electrical Engineering and Automation Fuzhou University Fuzhou 350108 China
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