Abstract
The feasibility of installing a direct drive superconducting generator in the 5MW reference offshore wind turbine of the National Renewable Energy Laboratory (NREL) has been examined. The engineering current densities Je obtained in a series of race track coils have been combined with magnetization measurements to estimate the properties of suitable field coils for a synchronous generator, which is more light weight than the conventional used combination of a gear box and a fast rotating generator. An analytical model and finite element simulations have been used to estimate the active mass of generators with varying number of poles. A 24 pole machine with an outer diameter of 4.2m and active length and mass of 1.2m and 34 tons is suggested possible, if a Je=300A/mm2 can be obtained in B=4T pointing to an operation temperature around 40K.
| Original language | English |
|---|---|
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 471 |
| Issue number | 21-22 |
| Pages (from-to) | 1464-1469 |
| ISSN | 0921-4534 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | The 23rd International Symposium on Superconductivity - Tsukuba, Japan Duration: 1 Nov 2010 → 3 Nov 2010 Conference number: 23 |
Conference
| Conference | The 23rd International Symposium on Superconductivity |
|---|---|
| Number | 23 |
| Country/Territory | Japan |
| City | Tsukuba |
| Period | 01/11/2010 → 03/11/2010 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Superconducting generator
- Offshore wind turbine
- Race track coils
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