Vol. 104

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2020-07-20

An Improved Calculation Method for Static Capacitance in Inductor Windings

By Ming-Xing Du, Yuxiao Zhang, Hongbin Wang, Ye Tian, Ziwei Ouyang, and Ke-Xin Wei
Progress In Electromagnetics Research C, Vol. 104, 25-36, 2020
doi:10.2528/PIERC20051203

Abstract

This paper proposes an improved method for calculating static capacitance between two conductors with circular cross-sections in inductor windings. It considers the effects of electric field coupling and energy distribution on static capacitance. In this paper, the capacitance between two conductors in inductor windings is calculated by the improved calculation method and the finite-element method (FEM), respectively. The relative error of the improved calculation method is between 0.11% and 4.51% compared to the FEM. In order to verify the effectiveness of this method for inductor winding, the orthogonal stacking winding and staggered stacking winding are chosen as calculation examples to accurately predict the static capacitance of multi-layer circular-section induction coils. Finite element models for the two types of windings are built to determine the capacitances for our 3×3 array arrangement winding. The results show that the improved calculation method proposed in this paper highly conforms to FEM. Finally, we adopt an air-cored cylindrical inductor winding for experimental verification, and the improved calculation method is proved to be correct.

Citation


Ming-Xing Du, Yuxiao Zhang, Hongbin Wang, Ye Tian, Ziwei Ouyang, and Ke-Xin Wei, "An Improved Calculation Method for Static Capacitance in Inductor Windings," Progress In Electromagnetics Research C, Vol. 104, 25-36, 2020.
doi:10.2528/PIERC20051203
http://jpier.org/PIERC/pier.php?paper=20051203

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