Research on pitch control strategy and aerodynamic performance of vertical axis wind turbine

被引：0

作者：

Zhang Q. ^{[1
]}

Miao W. ^{[1
]}

Liu Q. ^{[1
]}

Li C. ^{[1
,2
]}

Zhang W. ^{[1
,2
]}

机构：

[1] School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai

[2] Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 10期

关键词：

Aerodynamic performance; Control strategy; Pitch; Vertical axis wind turbines;

D O I：

10.19912/j.0254-0096.tynxb.2021-0234

中图分类号：

学科分类号：

摘要：

The attack angle of the vertical axis wind turbine changes periodically during the operation. The blades are often in a dynamic stall state at low tip speed ratios, which greatly reduces their aerodynamic performance. Adjusting the angle of attack of the blades to control flow separation can improve its operating performance effectively. This paper takes the H-type Darrieus vertical axis wind turbine as the research object. Based on the rule that the variation of the angle of attack with the phase angle at different tip speed ratios, a pitch angle control strategy is proposed. That is when the angle of attack is larger, the amplitude of the change is larger, and when it is smaller, the amplitude of change is smaller, and then the influence of its control method on aerodynamic performance is verified through numerical calculation, the variation of vortex field of wind turbine is analyzed under different rotation angles, and the reason of aerodynamic load variation is also discussed. The results show that this pitch angle control strategy can significantly improve the power coefficient, and the lifting effect is more significant when the tip speed ratio is lower, at a TSR of 1.25, the power coefficient increases by 146%. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.

引用

页码：296 / 303

页数：7

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