# Design and in-field testing of the world’s first ReBCO rotor for a 3.6 MW wind generator

Article · Anne Bergen, Rasmus S. Andersen, Markus Bauer, Hermann Boy, Marcel ter Brake, Patrick Brutsaert, Carsten Bührer, Marc Dhalle, Jesper Hansen, Herman H.J. ten Kate, J. Kellers, Jens Krause, Erik J. G. Krooshoop, Christian Kruse, Hans Kyling, Martin Pilas, Hendrik Pütz, Anders V. Rebsdorf, Michael Reckhard, Eric Seitz, Helmut Springer, Xiaowei Song, Nir Tzabar, Sander Wessel, Jan Wiezoreck and 2 more

- Archive id: doi:10.1088/1361-6668/ab48d6
- Published: 2019-10-25
- Venue: Superconductor Science and Technology
- DOI: https://doi.org/10.1088/1361-6668/ab48d6
- Citations: 129
- Source URL: https://doi.org/10.1088/1361-6668/ab48d6
- PDF: https://iopscience.iop.org/article/10.1088/1361-6668/ab48d6/pdf
- Provenance: openalex

## Abstract

Abstract The main aim of the EU H2020 project EcoSwing was to demonstrate a technical readiness level of 6–7 for high-temperature superconducting (HTS) technology operating in a wind generator. To reach this goal, a full-scale synchronous HTS generator was successfully designed, built and field-tested in a 3.6 MW turbine. The generator has a rotor with 40 superconducting coils of 1.4 m long. The required \>20 km of coated conductor was produced within the project’s time schedule. All coils were tested prior to assembly, with \>90% of them behaving as expected. The technical readiness level of HTS coils was thus increased to level 7. Simultaneously, the maturing of cryogenic cooling technology over the last decade was illustrated by the several Gifford-McMahon cold-heads that were installed on-board the rotor and connected with the stationary compressors through a rotating coupling. The cryogenic system outperformed design expectations, enabling stable coil temperatures far below the design temperature of 30 K after only 14 d of cool-down. After ground-based testing at the IWES facility in Bremerhaven, Germany, the generator was installed on an existing turbine in Thyborøn, Denmark. Here, the generator reached the target power range and produced power for over 650 h of grid operation.

_Abstract reproduced under CC-BY (publisher license, via OpenAlex)._

Topics: [Applied Superconductivity & HTS Magnets](https://space-kitty.com/topics/applied-superconductivity)

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