Work

Establishment of an easy Icmeasurement method of HTS superconducting tapes using clipped voltage taps

Year: 2014

Type: article

Abstract: The critical current, $I_c$ of HTS superconducting tapes can be measured by transport or contactless method. Practically, the transport method using the four-probe method is the most common. In this study, a simple test procedure by clipping the voltage lead taps have been introduced instead of soldering which reduces time and effort and thereby achieving a much faster measurement of $I_c$ . When using a pair of iron clips, $I_c$ value decreased as compared with the measured one by standard method using soldered voltage taps and varies with the width of the clipped specimen part. However, when using a pure Cu clip, both by clipping and by soldering voltage taps give a comparable result and $I_c$ measured are equal and close to the samples specification. As a result, material to be used as voltage clip should be considered and should not influence the potential voltage between the leads during $I_c$ measurement. Furthermore, the simulation result of magnetic flux during $I_c$ measurement test showed that the decrease of $I_c$ observed in the experiment is due to the magnetic flux density, $B_y$ produced at the clipped part of the sample by the operating current with iron clips attached to the sample.

Source: Progress in Superconductivity and Cryogenics

DOI: 10.9714/psac.2014.16.2.029

Authors: Hyung-Seop Shin, Arman Nisay, Marlon Dedicatoria, KiDeok Sim

Institutions: Gyeongkuk National University, Korea Electrotechnology Research Institute

Language: English

Topic: Superconducting Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: National Research Foundation, Ministry of Trade, Industry and Energy, National Research Foundation of Korea, Korea Institute of Energy Technology Evaluation and Planning

Awards: G1274167916, G3386286015, G5561499559, G6941522288