The University of Southampton
University of Southampton Institutional Repository

The Design of a Lightweight HTS Synchronous Generator Cooled by Subcooled Liquid Nitrogen

Bailey, W.O.S, Al-Mosawi, M., Yang, Yifeng, Goddard, K. and Beduz, C. (2009) The Design of a Lightweight HTS Synchronous Generator Cooled by Subcooled Liquid Nitrogen IEEE Transactions on Applied Superconductivity, 19, (3), pp. 1674-1677. (doi:10.1109/TASC.2009.2017841).

Record type: Article


A final design of a dasiacorelesspsila 100 kW HTS synchronous generator, to be built at the University of Southampton is under way. The new generator will use the same conventional 2-pole, 3 phase stator used by for the dasiairon coredpsila generator. The new HTS rotor has no central core and the rotor winding is built with 15 double pancake coils. Each coil has 38 turns of BiPb2223 superconducting tape, with nominal current of 180 A at 77 K. In this design, only two flux diverters are used at the top and bottom of the winding to help shape the magnetic field. The coils are located on the inner wall of the cryostat. The construction of the cryostat poses our greatest mechanical challenge. Although we have avoided problems with differential thermal contractions by making the cryostat entirely from stainless steel, the cryostat requires considerable reinforcements. Additional supports and stiffening ribs must be welded to the thin-walled structure. Distortion/rippling during welding must be eliminated to ensure the final welds to the ring flanges can be made. The pole-pieces, which help to improve the waveform characteristics of the machine, are located in the warm space between the cold flange of the cryostat and the inner wall of the vacuum vessel. Unfortunately, the overall magnetic performance has been affected by the parallel stacking of the coils. Some suggestions for altering the current stator have been presented which show that improvements to the voltage waveforms can be achieved

Full text not available from this repository.

More information

Published date: 16 June 2009
Keywords: BSCCO coils, HTS generator, HTS machines, superconducting motor


Local EPrints ID: 79777
ISSN: 1051-8223
PURE UUID: 2256f924-da19-403a-9c2b-85175ff28808

Catalogue record

Date deposited: 19 Mar 2010
Last modified: 18 Jul 2017 23:16

Export record



Author: W.O.S Bailey
Author: M. Al-Mosawi
Author: Yifeng Yang
Author: K. Goddard
Author: C. Beduz

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.