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Transformers Magazine, Vol. 8 No. S5, 2021.

Original scientific paper

Superconducting traction transformer

Wenjuan Song
Zhenan Jiang
Mike Staines
Stuart Wimbush

Full text: english pdf 988 Kb

page 10-21

downloads: 608

cite

Abstract

An ongoing project to develop HTS traction transformers for the Chinese Fuxing high-speed train is demonstrating that the high-power density can be reached using high-temperature superconductors
(HTS). The findings are spectacular: the existing 6.5 MVA traction transformers can be replaced with drop-in superconducting transformers, achieving targets of less than 3 tons transformer system weight and 99.5 % efficiency compared to 6 tons and 95 % in the existing devices. The key to achieving these impressive figures is minimizing the AC loss of the HTS windings. New high-performance
wire, high current HTS Roebel conductor, high aspect-ratio windings, and flux diverters placed at the winding ends all contribute to reducing the electrical loss to less than 2 kW.

Keywords

AC loss, cooling system, HTS wire, traction transformer

Hrčak ID:

263817

URI

https://hrcak.srce.hr/263817

Publication date:

20.8.2021.

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