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Comparative analysis of methods for obtaining equivalent capacitance in single-layer EMI filter inductors.

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Title: Comparative analysis of methods for obtaining equivalent capacitance in single-layer EMI filter inductors.
Authors: Li, Yang1 (AUTHOR) liyang2@im.ehv.csg, Yang, Litai1 (AUTHOR) yanglitai@im.ehv.csg, Guo, Chunhai1 (AUTHOR) guochunhai1@im.ehv.csg, Zhang, Pengwang1 (AUTHOR) zhangpengwang@im.ehv.csg, Li, Qiao2 (AUTHOR) qiaoli@hnu.edu.cn
Source: Electrical Engineering. Jun2025, Vol. 107 Issue 6, p6779-6789. 11p.
Subjects: Electric capacity, Comparative method, Comparative studies, Geometry
Abstract: The parasitic capacitance significantly impacts the high-frequency characteristics of EMI filter inductors used in power electronic applications. Accurate evaluation of this parasitic capacitance is crucial for optimizing inductor performance, which in turn enhances the effectiveness of EMI filters. Numerous modeling approaches have been proposed to achieve this goal. This paper compares and analyzes two commonly used methods for obtaining equivalent capacitance: the distributed-parameter based method and the energy-conservation based method. The numerical approach decouples several capacitances in the distributed-parameter method, enabling a detailed comparison with the formulas used in the energy-conservation method. Additionally, the relationship between these methods and the core geometry is thoroughly explored. By comparing the capacitance values obtained from both methods with experimental data, the paper delineates the applicable scope of each method. [ABSTRACT FROM AUTHOR]
Copyright of Electrical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Comparative analysis of methods for obtaining equivalent capacitance in single-layer EMI filter inductors.
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Yang%22">Li, Yang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liyang2@im.ehv.csg</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Litai%22">Yang, Litai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yanglitai@im.ehv.csg</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Chunhai%22">Guo, Chunhai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> guochunhai1@im.ehv.csg</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Pengwang%22">Zhang, Pengwang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangpengwang@im.ehv.csg</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Qiao%22">Li, Qiao</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> qiaoli@hnu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Electrical+Engineering%22">Electrical Engineering</searchLink>. Jun2025, Vol. 107 Issue 6, p6779-6789. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Electric+capacity%22">Electric capacity</searchLink><br /><searchLink fieldCode="DE" term="%22Comparative+method%22">Comparative method</searchLink><br /><searchLink fieldCode="DE" term="%22Comparative+studies%22">Comparative studies</searchLink><br /><searchLink fieldCode="DE" term="%22Geometry%22">Geometry</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The parasitic capacitance significantly impacts the high-frequency characteristics of EMI filter inductors used in power electronic applications. Accurate evaluation of this parasitic capacitance is crucial for optimizing inductor performance, which in turn enhances the effectiveness of EMI filters. Numerous modeling approaches have been proposed to achieve this goal. This paper compares and analyzes two commonly used methods for obtaining equivalent capacitance: the distributed-parameter based method and the energy-conservation based method. The numerical approach decouples several capacitances in the distributed-parameter method, enabling a detailed comparison with the formulas used in the energy-conservation method. Additionally, the relationship between these methods and the core geometry is thoroughly explored. By comparing the capacitance values obtained from both methods with experimental data, the paper delineates the applicable scope of each method. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Electrical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00202-024-02888-6
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        Text: English
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              M: 06
              Text: Jun2025
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