## Coil Optimization for High Temperature Superconductor Machines

Publication: Research - peer-review › Journal article – Annual report year: 2011

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**Coil Optimization for High Temperature Superconductor Machines.** / Mijatovic, Nenad; Jensen, Bogi Bech; Abrahamsen, Asger Bech; Rodriguez Zermeno, Victor Manuel; Træholt, Chresten; Pedersen, Niels Falsig.

Publication: Research - peer-review › Journal article – Annual report year: 2011

### Harvard

*I E E E Transactions on Applied Superconductivity*, vol 21, no. 3, pp. 1136-1140., 10.1109/TASC.2010.2094171

### APA

*I E E E Transactions on Applied Superconductivity*,

*21*(3), 1136-1140. 10.1109/TASC.2010.2094171

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*I E E E Transactions on Applied Superconductivity*. 2011, 21(3). 1136-1140. Available: 10.1109/TASC.2010.2094171

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### RIS

TY - JOUR

T1 - Coil Optimization for High Temperature Superconductor Machines

AU - Mijatovic,Nenad

AU - Jensen,Bogi Bech

AU - Abrahamsen,Asger Bech

AU - Rodriguez Zermeno,Victor Manuel

AU - Træholt,Chresten

AU - Pedersen,Niels Falsig

N1 - Copyright 2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

PY - 2011

Y1 - 2011

N2 - This paper presents topology optimization of HTS racetrack coils for large HTS synchronous machines. The topology optimization is used to acquire optimal coil designs for the excitation system of 3 T HTS machines. Several tapes are evaluated and the optimization results are discussed. The optimization algorithm is formulated to minimize the cost for the coils wound with one type of HTS as well as multiple HTS types. It could also be used to minimize other parameters, e.g. space required for the coils. The results are inherently highly dependent on the HTS properties, which at 20 K seem to be in favor of the 1 G tape. The maximal HTS savings achieved allowing multiple current supplies in the excitation system are investigated and estimated to be in the range of 50% for highly nonlinear J-B dependence HTS tapes.

AB - This paper presents topology optimization of HTS racetrack coils for large HTS synchronous machines. The topology optimization is used to acquire optimal coil designs for the excitation system of 3 T HTS machines. Several tapes are evaluated and the optimization results are discussed. The optimization algorithm is formulated to minimize the cost for the coils wound with one type of HTS as well as multiple HTS types. It could also be used to minimize other parameters, e.g. space required for the coils. The results are inherently highly dependent on the HTS properties, which at 20 K seem to be in favor of the 1 G tape. The maximal HTS savings achieved allowing multiple current supplies in the excitation system are investigated and estimated to be in the range of 50% for highly nonlinear J-B dependence HTS tapes.

KW - Topology optimization

KW - Materials for fusion reactors

KW - HTS machines

KW - HTS coil optimization

KW - Materialer til fusionsreaktorer

U2 - 10.1109/TASC.2010.2094171

DO - 10.1109/TASC.2010.2094171

M3 - Journal article

VL - 21

SP - 1136

EP - 1140

JO - I E E E Transactions on Applied Superconductivity

T2 - I E E E Transactions on Applied Superconductivity

JF - I E E E Transactions on Applied Superconductivity

SN - 1051-8223

IS - 3

ER -