Download presentation
Presentation is loading. Please wait.
Published byBrendan Ferguson Modified over 9 years ago
1
Superconducting Generators for Large Wind Turbines Markus Mueller Ozan Keysan – Joe Burchell markus.mueller@ed.ac.uk o.keysan@ed.ac.uk Institute for Energy Systems The University of Edinburgh 19/03/2012
2
Motivation BARD 5MW Global Offshore Wind Energy Markets and Strategies,2009 In 2020, 85% of offshore wind turbine installations will be larger than 5 MW
3
Wind Turbines: Constantly Growing How big? UpWind Project: A 20 MW Wind Turbine is Feasible www.upwind.eu
4
Mass of Direct-Drive Generators Harakosan 1.5MW,18 rpm,47 tonnes (*) D. Bang et.al. “Review of Generator Systems for Direct-Drive Wind Turbines,” 2008, All data available at goo.gl/ZZivv goo.gl/ZZivv Enercon 4.5 MW, 13 rpm 220 tonnes
5
All data available at goo.gl/ZZivv goo.gl/ZZivv Mass of Direct-Drive Generators
6
Reliability of Wind Turbines Hahn, B., & Durstewitz, M. (2007). Wind Energy-Reliability of Wind Turbines. ~1MW, 1500 onshore turbines
7
Types of HTS Machines Rotating DC Superconducting Field Most Common Type Transient Torques on HTS wire Cryocooler Coupler + Electrical Brushes Low Reliability + Maintenance Magnetized Bulk HTS Very Difficult to Handle Demagnetization? All Superconducting Machines AC Losses on HTS wire
8
Reliability? Cooling System Cryogenic Couplers Electric Brushes Transient torques on SC Demagnetization for Bulk SC AC losses on SC wire Issues with Superconducting Generators SeaTitan AMSC, 10 MW, 10 rpm Direct-drive superconducting generator
10
Homopolar HTSG
11
Pros Stationary SC Field No Brushes No Transient Torque on SC Simplified Cooling, Isolation
12
Homopolar HTSG Cons Uni-directional flux density Reduced power density
13
Bipolar HTSG
15
Pros Bidirectional Flux Increased Power Density Cons Double SC field winding Mechanical Issues
16
Transverse Flux HTSG
17
Pros Single Stationary SC Coil Bidirectional flux High Torque Density Cons Magnetic Attraction Forces 3D Flux (Soft magnetic composites needed) Transverse Flux HTSG
18
3D FEA Verification
19
Main Specifications Power Output70 kW Speed100 rpm Diameter1.3 m Axial Length0.5 m SC Wire Current216 A SC Wire Length880 m
20
Next Stage: Linear Prototype
22
Some Publications "A Homopolar HTSG Topology for Large Direct-Drive Wind Turbines", Keysan O., and Mueller M., 2011. IEEE Transactions on Applied Superconductivity, 21(5), 3523 - 3531. doi:10.1109/TASC.2011.2159005.A Homopolar HTSG Topology for Large Direct-Drive Wind Turbines "Superconducting Generators for Renewable Energy Applications", Keysan O., and Mueller M., 2011, IET Renewable Power Generation Conference, Edinburgh.Superconducting Generators for Renewable Energy Applications "A Transverse Flux High-Temperature Superconducting Generator Topology for Large Direct Drive Wind Turbines", Keysan O., and Mueller M., 2011. Superconductivity Centennial Conference, 2011, Den Haag, The Netherlands.A Transverse Flux High-Temperature Superconducting Generator Topology for Large Direct Drive Wind Turbines THANKS
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.