吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (4): 991-997.doi: 10.13229/j.cnki.jdxbgxb201404014

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Self-starting capacity of vertical axis wind turbine with collective pitch control

ZHANG Li-xun, LIANG Ying-bin, ZHANG Song, WANG Kang, GUO Jian   

  1. College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
  • Received:2013-01-07 Online:2014-07-01 Published:2014-07-01

Abstract: In order to improve the self-starting capacity of Vertical Axis Wind Turbine (VAWT), the variation rule of blade pitch angle, which is suitable for the cases of low Tip Speed Ratio (TSR), is proposed; an actuator for collective pitch control is designed, which can change the blade pitch angle of multiple blades. A prototype is presented from the aspects of actuator of collective pitch control, airfoil selection, structure of wind wheel and control system. The performance tests of the prototype were carried out. The results show that the best thickness of the symmetrical airfoil is 15%, while the maximum thickness of asymmetrical airfoil is less than 10.4%. The theoretical data show similar variation trend but is 20%-30% higher than experimental data. The results also show that, to improve the self-starting toque, it is effective to increase the frontal area of the blade at downwind region of upstream.

Key words: power machinery and engineering, vertical axis wind turbine, collective pitch control, self-starting capacity

CLC Number: 

  • TK83
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