Abstract
High-temperature superconducting (HTS) transformers are verypromising candidates for application in electrical power engineering. Theirmain advantages are reduced size, weight, better efficiency and reducedpotential fire and environmental hazards. We have designed, constructed andtested a 100 kVA HTS power transformer operated at 77 K. The nominal primaryand secondary currents (voltages) are 18 A (5.6 kV) and 92 A (1.1 kV),respectively. No-load tests, short-circuit tests and load tests provedrepeatedly that the transformer has the rated capacity. HTS winding losses of20.6 W and iron losses of 403 W were measured.
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