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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 10    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 10, October 2011 Edition
Direct - Drive Wind Turbines
Full Text(PDF, 3000)  PP.  
Zoran Ivanovski Msc
Drive Wind Turbines
The objective of this paper is to identify suitable generator concepts for direct-drive wind turbines by reviewing direct-drive and geared generator systems. Usually, in literature, comparison of different generator systems is discussed with the criteria based on the energy yield, cost, and weight. Because direct-drive permanent-magnet machines are more superior in terms of the energy yield, reliability and maintenance problem, different promising permanent-magnet machines proposed in literature are also discussed to find suitable generator type. Finally, suitable concepts to overcome the disadvantages of direct-drive are suggested considering both electromagnetic and mechanical structure
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[2] M.R. Dubois H. Polinder J.A. Ferreira “Comparison of generator topologies for direct-drive wind turbines”

[3] Staffan Engstrom “The NewGen Generator How Direct Drive helps In the Transportation of Large Wind Turbines”

[4] A.D. Hansen and L.H. Hansen, “Wind turbine concept market penetration over 10 years(1995-2004)”, Wind Energy, Vol.10, pp. 81-97, 2007

[5] Grauers A., “Design of Direct-driven Permanent-Magnet Generators for Wind Turbines”, PhD Thesis, 1996, Chalmers University, Goteborg, Sweden

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[7] M. Dubois, “Optimized permanent magnet generator topologies for direct drive wind turbines”, Ph.D. dissertation, Delft University of Technology, Delft, The Netherlands, 2004.

[8] Zhang Z., Profumo F., Tenconi A., “Axial-Flux versus Radial-Flux permanent-magnet motors”, Electromotion, vol. 3, 1996

[9] H. Polinder, “On the losses in a high-speed permanent-magnet generator with rectifier”, Ph.D. dissertation, Delft University of Technology, Delft, The Netherlands, 1998.

[10] F. Libert and J. Soulard, “Design Study of Different Direct-Driven Permanent-Magnet Motors for a Low Speed Application”, in Proceedings of the Nordic Workshop on Power and Industrial Electronics (NORpie), Trondheim, Norway, June 2004.

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