Title :
Development of a three phase 100 kVA superconducting power transformer with amorphous cores
Author :
Ji-Kwang Lee ; Woo-Seok Kim ; Song-Yop Hahn ; Kyeong-Dal Choi ; Gueesoo Cha ; Seung-Chan Chang
Author_Institution :
Woosuk Univ., Chonbuk, South Korea
fDate :
6/1/1999 12:00:00 AM
Abstract :
The advent of AC superconducting wires with ultra-fine filaments promoted the development of superconducting transformers, but most superconducting transformers with large capacity had been single phase ones. This paper describes the development of a 100 kVA three phase superconducting transformer (440/220 V). Fundamental characteristics of the transformer are obtained through no-load tests, short circuit tests and load tests under various conditions. The transformer cores are made of amorphous films and immersed in liquid helium with transformer windings for simplifying the structure of it. The losses and efficiency are analyzed.
Keywords :
losses; power transformer testing; short-circuit currents; superconducting cables; superconducting transformers; transformer cores; transformer windings; 100 kVA; 220 V; 440 V; AC superconducting wires; amorphous cores; amorphous films; efficiency; liquid helium; load tests; losses; no-load tests; short circuit tests; three phase superconducting power transformer; transformer cores; transformer windings; ultra-fine filaments; Amorphous materials; Circuit faults; Circuit testing; High temperature superconductors; Power transformers; Research and development; Research and development management; Superconducting cables; Superconducting filaments and wires; Transformer cores;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
