Feasibility study of 5MW superconducting wind turbine generator

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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The feasibility of installing a direct drive superconducting generator in the 5MW reference offshore wind turbine of the National Renewable Energy Laboratory (NREL) has been examined. The engineering current densities Je obtained in a series of race track coils have been combined with magnetization measurements to estimate the properties of suitable field coils for a synchronous generator, which is more light weight than the conventional used combination of a gear box and a fast rotating generator. An analytical model and finite element simulations have been used to estimate the active mass of generators with varying number of poles. A 24 pole machine with an outer diameter of 4.2m and active length and mass of 1.2m and 34 tons is suggested possible, if a Je=300A/mm2 can be obtained in B=4T pointing to an operation temperature around 40K.
Original languageEnglish
JournalPhysica C: Superconductivity and its applications
Publication date2011
Volume471
Journal number21-22
Pages1464-1469
ISSN0921-4534
DOIs
StatePublished

Conference

ConferenceThe 23rd International Symposium on Superconductivity
CityTsukuba (JP), 1-3 Nov
Period01/01/10 → …
CitationsWeb of Science® Times Cited: 16

Keywords

  • Superconducting generator, Offshore wind turbine, Race track coils
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