Conference paper
Comparison of 10 MW superconducting generator topologies for direct-drive wind turbines
Large wind turbines of 10 MW or higher power levels are desirable for reducing the cost of energy of offshore wind power conversion. Conventional wind generator systems will be costly if scaled up to 10 MW due to rather large size and weight. Direct drive superconducting generators have been proposed to address the problem with generator size, because the electrical machines with superconducting windings are capable of achieving a higher torque density of an electrical machine.
However, the topology to be adopted for superconducting wind generators has not yet been settled, since the high magnetic field excitation allows for lightweight non-magnetic composite materials for machine cores instead of iron. A topology would probably not be a good option for an offshore wind turbine generator if it demands a far more expensive active material cost than others, even if it has other advantages such as light weight or small iron losses.
This paper is to provide a preliminary quantitative comparison of 10 MW superconducting MgB2 generator topologies from the perspective of active material. The results show that iron-cored topologies have a cheaper active material and their sizes are relatively smaller than the others.
Language: | English |
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Publisher: | IEEE |
Year: | 2015 |
Pages: | 174-180 |
Proceedings: | 2015 IEEE International Electric Machines & Drives Conference |
ISBN: | 1479979406 , 1479979414 , 1479979422 , 9781479979400 , 9781479979417 and 9781479979424 |
Types: | Conference paper |
DOI: | 10.1109/IEMDC.2015.7409056 |
ORCIDs: | Abrahamsen, Asger Bech |
Comparison Cost Direct drive Finite element Magnesium diboride Optimization Superconducting generator Topology Wind turbine
Generators Iron MgB<sub>2</sub> Superconducting filaments and wires Superconducting magnets Wind turbines Windings active material composite materials cost direct drive direct-drive wind turbines electrical machines finite element generator size high magnetic field excitation iron-cored topologies lightweight nonmagnetic composite materials machine cores magnesium compounds magnesium diboride magnetic fields offshore wind power conversion offshore wind turbine generator optimization power 10 MW power levels superconducting generator superconducting generator topologies superconducting windings topology torque density wind generator systems wind turbine wind turbines