High-Temperature Superconducting Generators
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High-Temperature Superconducting Generators for Direct Drive Applications OZAN KEYSAN [email protected] Institute for Energy Systems The University of Edinburgh April 2011
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A basic introduction to superconductivity and superconducting generators
Transcript of High-Temperature Superconducting Generators
High-Temperature Superconducting Generators for
Direct Drive ApplicationsOZAN [email protected] for Energy
SystemsThe University of
EdinburghApril 2011
Ozan KEYSAN [email protected] 3
MERCURYThe First Superconductor Material Discovered in 1911Critical Temp = 4.2 K (-269 C)
Ozan KEYSAN [email protected] 5
YBCO (YBa2Cu3O7 )
Current Density > 200 A/mm2
(5-10 A/mm2 for copper)
Ozan KEYSAN [email protected] 8
Applications: Large Hadron Collider
Superconducting Magnets • Up to 16 T, Normal PM ~1.5 T
Ozan KEYSAN [email protected] 10
Power Applications
Courtesy AMSC, InnoPower Superconductor
Transmission Lines Fault Current Limiter
Ozan KEYSAN [email protected] 11
Power Applications : Electrical Machines
Courtesy of Siemens, Converteam (ALSTOM)
Siemens: 400 kW
Converteam (ALSTOM): 5 MW HTS
Ozan KEYSAN [email protected] 12
Power Applications : Electrical Machines
36.5 MW, 120 rpm (U.S. Navy, AMSC)
Courtesy of AMSC
Ozan KEYSAN [email protected] 13
Wind Turbine Applications?
M. Lesser, J. Müller, “Superconductor Technology – Generating the Future of Offshore Wind Power,” BARD 5MW
Ozan KEYSAN [email protected] 14
Direct-Drive Solutions
EESM: Electrically excitedSynchronous Machine
HTSG: High-TemperatureSuperconducting Generator
PMG: Permanent-MagnetGenerator
Bubble Size: Power Rating
Ozan KEYSAN [email protected] 16
Types of HTS Machines
Rotating DC Superconducting Field Most Common Type Transient Torques on HTS wire Cryocooler Coupler + Brushes
Low Reliability Cooling Times
Magnetized Bulk HTS Very Difficult to Handle Demagnetization
All Superconducting Machines AC Losses on HTS wire
Ozan KEYSAN [email protected] 17
Reliability?
Stationary SC Coil No Cryogenic Coupler No Brushes No Transient Torque on
SC Simplified Cooling,
Isolation DC Field
No AC losses Maximized Current
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Transversal Flux HTSG
Claw PoleRotor
Superconducting Coil (Field)
Fixed Structure
Copper Coil (Armature)
Current Direction
Moving Part
x
