Design and Performance of a Novel Pancake Rogowski Coil for Measuring Pulse Currents

• Published in: Plasma science & technology Vol. 13; no. 6; pp. 751 - 756
• Main Author: 王春杰 汲胜昌 聂济宇 欧小波 韩钟健 张乔根
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.12.2011
• Subjects: Rogowski线圈; 低频特性; 性能介绍; 煎饼; 等离子体物理; 脉冲功率技术; 脉冲电流测量; 设计
• ISSN: 1009-0630
• DOI: 10.1088/1009-0630/13/6/22

A novel pancake Rogowski coil without magnetic core is introduced in this paper. Owing to its special pancake winding structure, the coil is of low self-resistance and high self-inductance, and thus has excellent low frequency characteristic in the self-integral mode. Moreover, because of its unique installation method, the coil has a flexible sensitivity and can be applied under situations where toroidal air-core Rogowski coils or printed aircuit board （PCB） coils are not available. The parameters and performance of the pancake Rogowski coil are presented, and the principle of shielding is given. Measurements of step pulse current and oscillating pulse current by the coil are studied experimentally to illustrate its good linearity, reliable and flexible sensitivity and excellent frequency characteristic, especially its advantage in low frequency characteristic. The pancake Rogowski coil can be designed to assume round, square or rectangle shape, and has thus broad prospects in its application to the current measurement in such areas as plasma physics and pulsed power technology.