Transformers Magazine, Vol. 8 No. S5, 2021.
Izvorni znanstveni članak
Superconducting traction transformer
Wenjuan Song
Zhenan Jiang
Mike Staines
Stuart Wimbush
Sažetak
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.
Ključne riječi
AC loss, cooling system, HTS wire, traction transformer
Hrčak ID:
263817
URI
Datum izdavanja:
20.8.2021.
Posjeta: 607 *