Title :
A 15-kVA High-Temperature Superconducting Partial-Core Transformer—Part II: Construction Details and Experimental Testing
Author :
Lapthorn, Andrew ; Bodger, Pat ; Enright, Wade
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Canterbury, Christchurch, New Zealand
Abstract :
A new 15-kVA, 230-230 V, high-temperature superconducting, partial-core transformer has been designed, built, and tested. The transformer utilizes a unique core design called partial core, consisting of a central laminated slug of core steel only. The windings are layer wound with first-generation Bi2223 HTS. In part 1 of this paper, a model is used to predict the performance of the transformer as well as the ac losses of the HTS. In this part, a series of electrical tests was performed on the transformer, including open circuit, short circuit, resistive load, overload, ac withstand voltage, and fault ridethrough tests. The test results are compared with the model. The transformer was found to be 98.2% efficient at rated power with 2.86% voltage regulation.
Keywords :
high-temperature superconductors; superconducting transformers; transformer windings; ac losses; ac withstand voltage test; apparent power 15 kVA; central laminated slug; core steel; electrical tests; fault ridethrough test; first-generation Bi2223 HTS; high-temperature superconducting partial-core transformer; open circuit test; overload test; partial core; resistive load test; short circuit test; voltage 230 V; Current measurement; High temperature superconductors; Loss measurement; Power transformer insulation; Testing; Windings; Wires; High-temperature superconductors; partial core; transformers;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2012.2226479
