Print Email Facebook Twitter Investigation into Multi-Phase Armature Windings for High-Temperature Superconducting Wind Turbine Generators Title Investigation into Multi-Phase Armature Windings for High-Temperature Superconducting Wind Turbine Generators Author Liu, D. (TU Delft DC systems, Energy conversion & Storage; Hohai University) Song, X. (TU Delft DC systems, Energy conversion & Storage) Deng, Fujin (Southeast University) Dong, J. (TU Delft DC systems, Energy conversion & Storage) Date 2020-06-01 Abstract High-Temperature superconducting (HTS) generators are being considered as a competitive candidate in large direct-drive (DD) wind turbines because of their features of being lightweight and compact. Normally a large air gap is inevitable in partially HTS generators, sacrificing the torque producing capability. In this paper, multi-phase armature windings for HTS generators are investigated to reduce the air gap length in HTS generators while not compromising generators' performance. Therefore, the torque density of HTS generators can be improved without any added costs. Five different multi-phase armature winding schemes are studied in the paper. Their performance regarding torque production and rotor losses in a 10 MW DD HTS generator are examined. The findings show that employing multi-phase armature windings can reduce the mechanical air gap without generating extra eddy current losses in the rotor, and the torque production can be improved by up to 9.1%. In addition, the alternating magnetic field reaching the HTS field winding are also reduced by using multi-phase armature windings, resulting in lower AC losses and cooling costs. Subject AC losseddy current lossHTS generatormulti-phasetorquewind turbine To reference this document use: http://resolver.tudelft.nl/uuid:e9c436c6-17c9-414b-bcc7-c76c57f51de9 DOI https://doi.org/10.1109/TASC.2020.2967286 Embargo date 2021-01-01 ISSN 1051-8223 Source IEEE Transactions on Applied Superconductivity, 30 (4) Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2020 D. Liu, X. Song, Fujin Deng, J. Dong Files PDF Investigation_Into_Multi_ ... rators.pdf 992.65 KB Close viewer /islandora/object/uuid:e9c436c6-17c9-414b-bcc7-c76c57f51de9/datastream/OBJ/view