Measurement of AC losses in a racetrack superconducting coil made from YBCO coated conductor

Publication: Research - peer-reviewConference article – Annual report year: 2012

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Measurement of AC losses in a racetrack superconducting coil made from YBCO coated conductor. / Seiler, Eugen; Abrahamsen, Asger Bech; Kovac, Jan; Wichmann, Mike; Træholt, Chresten.

In: Physics Procedia, Vol. 36, 2012, p. 980-984.

Publication: Research - peer-reviewConference article – Annual report year: 2012

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Author

Seiler, Eugen; Abrahamsen, Asger Bech; Kovac, Jan; Wichmann, Mike; Træholt, Chresten / Measurement of AC losses in a racetrack superconducting coil made from YBCO coated conductor.

In: Physics Procedia, Vol. 36, 2012, p. 980-984.

Publication: Research - peer-reviewConference article – Annual report year: 2012

Bibtex

@article{826f04672a7142799c1c3d2da250130d,
title = "Measurement of AC losses in a racetrack superconducting coil made from YBCO coated conductor",
publisher = "Elsevier BV",
author = "Eugen Seiler and Abrahamsen, {Asger Bech} and Jan Kovac and Mike Wichmann and Chresten Træholt",
year = "2012",
doi = "10.1016/j.phpro.2012.06.092",
volume = "36",
pages = "980--984",
journal = "Physics Procedia",
issn = "1875-3892",

}

RIS

TY - CONF

T1 - Measurement of AC losses in a racetrack superconducting coil made from YBCO coated conductor

A1 - Seiler,Eugen

A1 - Abrahamsen,Asger Bech

A1 - Kovac,Jan

A1 - Wichmann,Mike

A1 - Træholt,Chresten

AU - Seiler,Eugen

AU - Abrahamsen,Asger Bech

AU - Kovac,Jan

AU - Wichmann,Mike

AU - Træholt,Chresten

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - We present the results of transport measurements of AC losses in a racetrack shaped superconducting coil made from coated conductor tape. The outer dimensions of the coil are approximately 24 cm × 12 cm and it has 57 turns. The coil is impregnated with epoxy resin and fiberglass tape is used to insulate the individual turns and to improve the mechanical properties of the epoxy when exposed to thermal cycling. The coil is manufactured as a part of the field winding of a small synchronous generator; therefore stainless steel frames are installed on the inner and outer side of the winding to reinforce it. The AC loss is measured versus the transport current Ia with the coil immersed in liquid nitrogen. Measurements at frequencies 21 Hz, 36 Hz and 72 Hz are compared. The AC losses follow I2 a dependence at low current amplitudes and I3 a at high amplitudes. After cutting the inner steel frame the low amplitude losses are decreased, their frequency dependence is reduced but their dependence on the current remains unchanged.<br/>© 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors

AB - We present the results of transport measurements of AC losses in a racetrack shaped superconducting coil made from coated conductor tape. The outer dimensions of the coil are approximately 24 cm × 12 cm and it has 57 turns. The coil is impregnated with epoxy resin and fiberglass tape is used to insulate the individual turns and to improve the mechanical properties of the epoxy when exposed to thermal cycling. The coil is manufactured as a part of the field winding of a small synchronous generator; therefore stainless steel frames are installed on the inner and outer side of the winding to reinforce it. The AC loss is measured versus the transport current Ia with the coil immersed in liquid nitrogen. Measurements at frequencies 21 Hz, 36 Hz and 72 Hz are compared. The AC losses follow I2 a dependence at low current amplitudes and I3 a at high amplitudes. After cutting the inner steel frame the low amplitude losses are decreased, their frequency dependence is reduced but their dependence on the current remains unchanged.<br/>© 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors

KW - AC losses

KW - YBCO coated conductor

KW - Pancake coil

U2 - 10.1016/j.phpro.2012.06.092

DO - 10.1016/j.phpro.2012.06.092

JO - Physics Procedia

JF - Physics Procedia

SN - 1875-3892

VL - 36

SP - 980

EP - 984

ER -