<abstract xmlns="http://www.w3.org/1999/xhtml"><p> A Rogowski coil based sensor for current measurement in a cryogenic environment and results of its application for paralleled high temperature superconducting (HTS) coil current sharing are presented. The current sensor consists of a Rogowski coil and an integrator, where the coil output voltage is proportional to the derivative of primary current and the integrator transfers the differentiation to normal state. The Rogowski coil has promising applicability at cryogenic circumstance because its body is made of low temperature materials. The integrator ensures a large bandwidth with feasible magnitude, which is vital for dynamic current measurement during the quench of the HTS coil. The proposed current sensor is used for current sharing measurement of two paralleled Bi2223 HTS coils, and the experimental results show that the measurement precision is better than 0.5%.</p></abstract>

A Rogowski coil based sensor for current measurement in a cryogenic environment and results of its application for paralleled high temperature superconducting (HTS) coil current sharing are presented. The current sensor consists of a Rogowski coil and an integrator, where the coil output voltage is proportional to the derivative of primary current and the integrator transfers the differentiation to normal state. The Rogowski coil has promising applicability at cryogenic circumstance because its body is made of low temperature materials. The integrator ensures a large bandwidth with feasible magnitude, which is vital for dynamic current measurement during the quench of the HTS coil. The proposed current sensor is used for current sharing measurement of two paralleled Bi2223 HTS coils, and the experimental results show that the measurement precision is better than 0.5%.

Rogowski Coil for Current Measurement in a Cryogenic Environment

Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190 China

Key Laboratory of Applied Superconductivity, Chinese Academy of Sciences, Beijing, 100190 China

Jiangsu Zhongtian Technology Co., Ltd., Nantong, Jiangsu, 226463 China

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Rogowski Coil for Current Measurement in a Cryogenic Environment"}

A Rogowski coil based sensor for current measurement in a cryogenic environment and results of its application for paralleled high temperature superconducting...

Rogowski Coil for Current Measurement in a Cryogenic Environment

Published Online: Jun 09, 2015

Page range: 77 - 84

Received: Nov 04, 2014

Accepted: Apr 30, 2015

DOI: https://doi.org/10.1515/msr-2015-0012

Keywords
Rogowski coil, integrator, current measurement, high temperature superconducting coil, cryogenic.

© by Tao Ma

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Rogowski Coil for Current Measurement in a Cryogenic Environment

Published Online: Jun 09, 2015

Page range: 77 - 84

Received: Nov 04, 2014

Accepted: Apr 30, 2015

DOI: https://doi.org/10.1515/msr-2015-0012

KeywordsRogowski coil, integrator, current measurement, high temperature superconducting coil, cryogenic.

© by Tao Ma

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Rogowski coil, integrator, current measurement, high temperature superconducting coil, cryogenic.