STUDY ON INFLUENCE OF SUCTION CONTROL STRATEGY ON AERODYNAMIC PERFORMANCE OF VERTICAL AXIS WIND TURBINE

Luo Shuai; Miao Weipao; Liu Qingsong; Li Chun; Zhang Wanfu

doi:10.19912/j.0254-0096.tynxb.2020-0946

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (5) : 287-295. DOI: 10.19912/j.0254-0096.tynxb.2020-0946

STUDY ON INFLUENCE OF SUCTION CONTROL STRATEGY ON AERODYNAMIC PERFORMANCE OF VERTICAL AXIS WIND TURBINE

Luo Shuai¹, Miao Weipao^1,2, Liu Qingsong¹, Li Chun^1,2, Zhang Wanfu²

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Abstract

Aiming at the complex aerodynamic characteristics of vertical axis wind turbine, the air intake holes are placed on the upper and lower surfaces of the wind wing type, and different control strategies for air intake are proposed to improve its aerodynamic performance. Based on CFD method, the influences of suction strategies with different tip speed ratios on wind energy utilization rate, blade tangential force coefficient and flow field characteristics of wind turbines were studied, and energy consumption and wind turbine output power were comprehensively considered. The results show that the three control strategies can greatly improve the aerodynamic efficiency of the whole machine at low tip ratio. The optimal approach of alternating suction in the windward and leeward zones can significantly delay the separation point, delay the occurrence of dynamic stall of airfoil, and reduce the loss caused by periodic shedding of separation vortex. In addition, the strategy has a good control effect on the dynamic wake effect, reduces the torque fluctuation amplitude of the whole machine, eliminates the negative torque of the wind turbine under medium and low tip ratio, thus improving the energy efficiency and prolonging the service life of the wind turbine.

Key words

VAWTs / flow control / CFD / aerodynamic characteristics / suction strategy

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Luo Shuai, Miao Weipao, Liu Qingsong, Li Chun, Zhang Wanfu. STUDY ON INFLUENCE OF SUCTION CONTROL STRATEGY ON AERODYNAMIC PERFORMANCE OF VERTICAL AXIS WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2022, 43(5): 287-295 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0946

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