Journal article
Superconducting wind turbine generators
Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Electric Components, Department of Electrical Engineering, Technical University of Denmark4
Department of Electrical Engineering, Technical University of Denmark5
Wind Energy Systems, Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark6
Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark7
Electric Energy Systems, Department of Electrical Engineering, Technical University of Denmark8
We have examined the potential of 10 MW superconducting direct drive generators to enter the European offshore wind power market and estimated that the production of about 1200 superconducting turbines until 2030 would correspond to 10% of the EU offshore market. The expected properties of future offshore turbines of 8 and 10 MW have been determined from an up-scaling of an existing 5 MW turbine and the necessary properties of the superconducting drive train are discussed.
We have found that the absence of the gear box is the main benefit and the reduced weight and size is secondary. However, the main challenge of the superconducting direct drive technology is to prove that the reliability is superior to the alternative drive trains based on gearboxes or permanent magnets.
A strategy of successive testing of superconducting direct drive trains in real wind turbines of 10 kW, 100 kW, 1 MW and 10 MW is suggested to secure the accumulation of reliability experience. Finally, the quantities of high temperature superconducting tape needed for a 10 kW and an extreme high field 10 MW generator are found to be 7.5 km and 1500 km, respectively.
A more realistic estimate is 200–300 km of tape per 10 MW generator and it is concluded that the present production capacity of coated conductors must be increased by a factor of 36 by 2020, resulting in a ten times lower price of the tape in order to reach a realistic price level for the superconducting drive train.
Language: | English |
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Publisher: | IOP Publishing |
Year: | 2010 |
Pages: | 034019 |
ISSN: | 13616668 and 09532048 |
Types: | Journal article |
DOI: | 10.1088/0953-2048/23/3/034019 |
ORCIDs: | Abrahamsen, Asger Bech , Mijatovic, Nenad , Træholt, Chresten and Østergaard, Jacob |