Improved Mutual Inductance of Rogowski Coil Using Hexagonal Core

Authors: S. Al-Sowayan

Abstract:

Rogowski coils are increasingly used for measurement of AC and transient electric currents. Mostly used Rogowski coils now are with circular or rectangular cores. In order to increase the sensitivity of the measurement of Rogowski coil and perform smooth wire winding, this paper studies the effect of increasing the mutual inductance in order to increase the coil sensitivity by presenting the calculation and simulation of a Rogowski coil with equilateral hexagonal shaped core and comparing the resulted mutual inductance with commonly used core shapes.

Keywords: Rogowski coil, Mutual inductance, magnetic flux density.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1337045

References:

[1] GuoXiaohua, Liao Jingsheng, Zhu Mingjun, Ye Miaoyuan, "Improved Performance Rogowski Coils for Power System” Transmission and Distribution Conference and Exposition, 2003 IEEE PES vol. 1 pp. 371-374.DOI 10.1109/TDC.2003.1335250.
[2] L. A. Kojovic, "PCB Rogowski Coil Designs and Performances for Novel Protective Relaying.” Pro of 2003 IEEE Power Engineering Society General meeting, pp.13-17, 2003.
[3] J.P. Dupraz, A. Fanget, W. Grieshaber, et al., "Rogowski Coil: Exceptional Current Measurement Tool for Almost Any Application.” IEEE Transactions on Instrumentation and Measurement, Vol 56, No.4, pp 1-8, 2007.
[4] Tao Tao, Zihihua Zhao, Weiming Ma, Qijun Pan, "Precise Mutual-Inductance Analysis of a Novel Clasp Rogowski Coil with Symmetrical Double-Printed Imprints.” Electromagnetic Field Problems and Applications (ICEF), 2012 Sixth International Conference. 2012, pp.1-4. DOI 10.1109/ICEF.2012.6310421.
[5] Rezaee. M, Heydari. H., "Mutual Inductances Comparison in Rogowski Coil with Circular and Rectangular Cross-Sections and Its Improvement” Industrial Electronics and Applications 2008. ICIEA 2008. 3rd IEEE Conference. 2008, page(s) 15701-1511. DOI 10.1109/ICIEA.2008.4582770.
[6] Li Weibo, Mao Chengxiong, Lu Jimming, ”Some Consideration of Designing a High Perfomance Rogowski Coil for Pulsed Current Measurement ”, Journal of Electrical and Electronics Engineering , Istanbul University vol. 6 No.1 page(s):7-12, 2006.