Ring-shaped surface-mounted permanent magnet generators with modular stator for small wind turbines

2018 ◽  
Author(s):  
Jefferson A. Oliveira ◽  
Aly F. Flores Filho ◽  
David G. Dorrell
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Shaped Surface ◽  
Small Wind Turbines ◽  
Permanent Magnet Generators

scholarly journals Acoustic Noise of Axial Flux Permanent Magnet Generators in Locally Manufactured Small Wind Turbines

2019 ◽  
Vol 13 (15) ◽  
pp. 2922-2928 ◽  
Author(s):  
Kostas Latoufis ◽  
Alexandros Matzakos ◽  
Ilias Katsambiris ◽  
Athanasios Vassilakis ◽  
Nikos Hatziargyriou
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Acoustic Noise ◽  
Axial Flux ◽  
Small Wind Turbines ◽  
Permanent Magnet Generators

Design Technology Trend of Permanent Magnet Generators for Wind Turbines

2021 ◽  
Vol 31 (3) ◽  
pp. 109-116
Author(s):  
Gang-Hyeon Jang ◽  
Woo-Hyeon Kim ◽  
Hyo-Seob Shin ◽  
Jang-Young Choi
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Design Technology ◽  
Permanent Magnet Generators ◽  
Technology Trend

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.

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