Abstract
The SUPRAPOWER, an EU FP7 funded research project, is developing an innovative 10 MW class superconducting generator to provide an important breakthrough in the offshore wind industry. The 10 MW generators adopts modular concept to the superconducting coil and associated cryogenic systems. And the modular superconducting coil and cryostat of this novel generator will be validated through a scale-down rotating magnetic validator (RMV). The cryogenic cooling system for the RMV consists of two modular cryostats: a distributing cryostat and the corresponding rotating cryocooler system with a self-developed rotary joint. In order to achieve the SC coils’ working temperature of 20 K, a two-stage G–M cryocooler will be applied and linked to the two modular cryostats by way of a conductive copper connection. The distributing cryostat was developed to envelop the cold head of the cryocooler, thermal link, and three binary current leads to electrically feed the coils. A rotary joint with Ferrofluid sealing was developed to transfer the helium gas between the rotating cold head and stationary oil-lubricated compressor. In this paper, the design, manufacture, and assembly of this cryogenic system for RMV will be presented in detail.
Original language | English |
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Article number | 5201105 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 28 |
Issue number | 3 |
DOIs | |
Publication status | Published - Apr 2018 |
Funding
Manuscript received October 3, 2017; accepted November 26, 2017. Date of publication December 4, 2017; date of current version December 27, 2017. This work was supported by the European Union Seventh Framework Program (FP7/2007-2013) under Grant 308793. (Corresponding author: Jiuce Sun.) J. Sun is with the Karlsruhe Institute of Technology, Karlsruhe 76131, Germany (e-mail: [email protected]). H. Neumann is with the Institute of Technical Physics, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen 76344, Germany. S. Sanz was with Tecnalia, Derio 48160, Spain (e-mail: santiago. [email protected]). G. Sarmiento and I. Marino are with Tecnalia, Marine Energy Area, Derio E-48160, Spain. M. Tropeano is with Columbus Superconductors, Genova 16133, Italy (e-mail: [email protected]). A. Pujana and J. M. Merino are with Tecnalia, Energy Department, Derio 48160, Spain. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2017.2779499 Fig. 1. Schematic layout of the cryogenic cooling system for the 10 MW offshore wind turbine.
Funders | Funder number |
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European Union Seventh Framework Program | |
FP7/2007 | 308793 |
Keywords
- Cryogenics
- Superconducting generators
- Wind turbine