Publication: Research - peer-review › Journal article – Annual report year: 2011
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.
|Journal||Physica C: Superconductivity and its applications|
|State||Published - 2011|
|Event||The 23rd International Symposium on Superconductivity - Tsukuba (JP), 1-3 Nov|
|Conference||The 23rd International Symposium on Superconductivity|
|City||Tsukuba (JP), 1-3 Nov|
|Period||01/01/2010 → …|
|Citations||Web of Science® Times Cited: 28|
- Superconducting generator, Offshore wind turbine, Race track coils
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