scholarly journals Development of a Direct Drive Permanent Magnet Generator for Small Wind Turbines

2004 ◽  
Author(s):  
Allan Chertok ◽  
David Hablanian ◽  
Paul McTaggart
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Direct Drive ◽  
Small Wind Turbines ◽  
Permanent Magnet Generator

Cogging Torque Reduction in a Permanent Magnet Wind Turbine Generator

2002 ◽  
Author(s):  
E. Muljadi ◽  
J. Green
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
High Efficiency ◽  
Mechanical Vibration ◽  
Direct Drive ◽  
Turbine Generator ◽  
Cogging Torque ◽  
Wind Turbine Generator ◽  
Small Wind Turbines ◽  
Design Options

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.

Axial Flux Permanent Magnet Generator Design for Low Cost Manufacturing of Small Wind Turbines

2012 ◽  
Vol 36 (4) ◽  
pp. 411-431 ◽  
Author(s):  
K.C. Latoufis ◽  
G.M. Messinis ◽  
P.C. Kotsampopoulos ◽  
N.D. Hatziargyriou
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Low Cost ◽  
Axial Flux ◽  
Small Wind Turbines ◽  
Generator Design ◽  
Low Cost Manufacturing ◽  
Permanent Magnet Generator
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