Most small wind turbines use permanent magnet (PM) generators. The generators are usually direct-drive (i.e., no gearbox is required). Direct-drive PM generators are characterized by low maintenance and high efficiency. Small wind turbines are usually self-starting and require very simple controls. Cogging torque is an inherent characteristic of PM generators and is caused by the geometry of the generator. Cogging torque affects self-start ability and produces noise and mechanical vibration. Thus, minimizing cogging torque is important in improving the operation of small wind turbines. In this paper, we investigate three design options to minimize cogging torque: uniformity of air gap, pole width, and skewing. Although the design improvement is intended for small wind turbines, it is also applicable to larger wind turbines.
Skip Nav Destination
Close
Sign In or Register for Account
ASME 2002 Wind Energy Symposium
January 14–17, 2002
Reno, Nevada, USA
Conference Sponsors:
- ASME
ISBN:
1-56347-476-X
PROCEEDINGS PAPER
Cogging Torque Reduction in a Permanent Magnet Wind Turbine Generator
E. Muljadi
,
E. Muljadi
National Renewable Energy Laboratory, Golden, CO
Search for other works by this author on:
J. Green
J. Green
National Renewable Energy Laboratory, Golden, CO
Search for other works by this author on:
E. Muljadi
National Renewable Energy Laboratory, Golden, CO
J. Green
National Renewable Energy Laboratory, Golden, CO
Paper No:
WIND2002-56, pp. 340-342; 3 pages
Published Online:
February 24, 2009
Citation
Muljadi, E, & Green, J. "Cogging Torque Reduction in a Permanent Magnet Wind Turbine Generator." Proceedings of the ASME 2002 Wind Energy Symposium. ASME 2002 Wind Energy Symposium. Reno, Nevada, USA. January 14–17, 2002. pp. 340-342. ASME. https://doi.org/10.1115/WIND2002-56
Download citation file:
- Ris (Zotero)
- Reference Manager
- EasyBib
- Bookends
- Mendeley
- Papers
- EndNote
- RefWorks
- BibTex
- ProCite
- Medlars
Close
Sign In
3
Views
0
Citations
Related Proceedings Papers
Related Articles
Investigation of Different Methods to Control a Small Variable-Speed Wind Turbine With PMSM Drives
J. Energy Resour. Technol (September,2007)
Condition Monitoring the Drive Train of a Direct Drive Permanent Magnet Wind Turbine Using Generator Electrical Signals
J. Sol. Energy Eng (May,2014)
Electric Design of Wind-Electric Water Pumping Systems
J. Sol. Energy Eng (November,1996)
Related Chapters
Effect of Skewing on Pulsating Torque and Radial Force Minimization in Brushless Permanent Magnet Motors
International Conference on Computer and Automation Engineering, 4th (ICCAE 2012)
Physiology of Human Power Generation
Design of Human Powered Vehicles
Reduction of Cogging Torque in Permanent Magnet Motor Based on the Pole Width Modulation Method
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3