HTS Transformer: Construction Details, Test Results, and Noted Failure Mechanisms

An experimental high temperature superconducting transformer has been designed and built using Bi2223 HTS tape. The transformer is unique in that the magnetic circuit is comprised of air and a silicon steel partial core. Electrical tests were performed on the transformer and it was found to be 98.6%...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2011-01, Vol.26 (1), p.394-399
Main Authors: Lapthorn, A C, Chew, I, Enright, W G, Bodger, P S
Format: Article
Language:English
Subjects:
Applied sciences
Coils (windings)
Electric power generation
Electrical engineering. Electrical power engineering
ELECTRICITY
Endurance
Exact sciences and technology
FAILURE
Fault diagnosis
Full load
High temperature superconductors
Insulation
Materials
partial core
Power transformer insulation
Silicon steels
STEELS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Testing. Reliability. Quality control
Transformer cores
TRANSFORMERS
Transformers and inductors
Windings
Wire
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Summary:An experimental high temperature superconducting transformer has been designed and built using Bi2223 HTS tape. The transformer is unique in that the magnetic circuit is comprised of air and a silicon steel partial core. Electrical tests were performed on the transformer and it was found to be 98.6% efficient at full load. The transformer failed during a full load endurance run and an investigation was carried out to determine the cause of the failure. The cause was believed to be from operating the HTS windings close to critical conditions. Presentation of the failure details will be of use to other researchers who are building HTS transformers.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2010.2061874