CUED Publications database

Transport AC Loss Measurements of a Triangular, Epoxy-Impregnated High Temperature Superconducting (HTS) Coil

Ainslie, MD and Hu, D and Kvitkovic, J and Kim, J and Kim, C and Pamidi, S and Zhou, D and Rush, J and Durrell, J (2017) Transport AC Loss Measurements of a Triangular, Epoxy-Impregnated High Temperature Superconducting (HTS) Coil. IEEE Transactions on Applied Superconductivity, 27. ISSN 1051-8223

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Abstract

In this paper, the transport AC losses in a triangular, epoxy-impregnated high temperature superconducting (HTS) coil made from YBCO coated conductor, intended for use in a prototype axial flux HTS electric machine, are measured using two different electrical techniques at 77 K. The first set of AC loss measurements of the coil are carried out at the University of Cambridge using a technique based on a lock-in amplifier. The coil is then measured at the Center for Advanced Power Systems (CAPS), Florida State University, using a technique based on a high accuracy data acquisition (DAQ) measurement system. The two different methods show consistent results, validating the accuracy of these two techniques for transport AC loss measurements of superconducting coils. Multiple voltage taps are utilized within the coil to study the details and distribution of the AC loss in different sections of the coil. Losses are also measured with a flux diverter made of ferromagnetic material to analyze its effect on the AC losses.

Item Type: Article
Uncontrolled Keywords: AC loss critical current density (superconductivity) high-temperature superconductors superconducting oils transport ac loss
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:05
Last Modified: 08 Apr 2021 06:28
DOI: 10.1109/TASC.2017.2653200