motivation
DESCRIPTION
Motivation. In 2020, 85% of offshore wind turbine installations will be larger than 5 MW. BARD 5MW. Global Offshore Wind Energy Markets and Strategies,2009. Wind Turbines: Constantly Growing. How big? UpWind Project: A 20 MW Wind Turbine is Feasible. www.upwind.eu. Superconducting Machines. - PowerPoint PPT PresentationTRANSCRIPT
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Motivation
BARD 5MWGlobal Offshore Wind Energy Markets and Strategies,2009
In 2020, 85% of offshore wind turbine installations will be larger than 5 MW
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Wind Turbines: Constantly Growing How big?
UpWind Project: A 20 MW Wind Turbine is Feasible
www.upwind.eu
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Superconducting Machines
Courtesy of Siemens, Converteam (ALSTOM)
Siemens: 400 kW
Converteam (ALSTOM): 5 MW HTS
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Power Applications : Electrical Machines
36.5 MW, 120 rpm (U.S. Navy, AMSC)
Courtesy of AMSC
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Direct-Drive SolutionsEnercon4.5 MW, 13 rpm220 tonnes
Harakosan 1.5MW,18 rpm,47 tonnes
AMSC, 36.5MW, 120rpm, 75 tonnes
(*) D. Bang et.al. “Review of Generator Systems for Direct-Drive Wind Turbines,” 2008,
All data available at goo.gl/ZZivv
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Reliability of Wind Turbines
Hahn, B., & Durstewitz, M. (2007). Wind Energy-Reliability of Wind Turbines.
~1MW, 1500 onshore turbines
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Reliability?
Cooling System Cryogenic Couplers Electric Brushes Transient torques on
SC Demagnetization for
Bulk SC AC losses on SC wire
Issues with Superconducting GeneratorsSeaTitan
AMSC, 10 MW, 10 rpm
Direct-drive superconducting generator
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Transverse Flux HTSG
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Pros Single Stationary SC Coil No Brushes No Cryogenic Coupler Bidirectional flux High Torque Density
Cons Magnetic Attraction
Forces 3D Flux (Soft magnetic
composites needed)
Transverse Flux HTSG
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Electromagnetic Modelling
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Main Specifications
Power Output
70 kW
Speed 100 rpm
Diameter 1.3 m
Axial Length 0.5 m
SC Wire Current
216 A
SC Wire Length
880 m
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Next Stage: Linear Prototype
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Next Stage: Linear Prototype
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THANKS