ABSTRACT Pitch angle greatly affects the performance of VAWT. Aiming at the maximum value of CT, this study first obtains the theoretical optimal angles of attack, i.e., 17.7° and −18.4° in upwind and downwind zones. A 2.5D model is simulated using Fluent to determine the magnitude and direction of induced velocity, and an initial pitch angle adjustment law is obtained combining the proposed local TSR. Compared with a prototype wind turbine, CP is increased by 2.69% after applying the initial adjustment law. The fitting curve angle δ at the abrupt part of pitch angle is analyzed. The smaller the angle δ is, the more evident the performance improvement of VAWT becomes. CP is increased by 11.68% when the angle is δ=0°. On this basis, the adjustment law corresponding to δ=0° of 100°

中文翻译：

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H型垂直轴风力机叶片桨距角调整规律的合理性研究

摘要 俯仰角极大地影响了 VAWT 的性能。针对CT的最大值，本研究首先得到理论最佳攻角，即上风区和下风区的17.7°和-18.4°。使用 Fluent 模拟 2.5D 模型以确定诱导速度的大小和方向，并结合所提出的局部 TSR 获得初始俯仰角调整规律。与原型风力机相比，应用初始调整规律后，CP 增加了 2.69%。分析了俯仰角突变部分的拟合曲线角δ。角度δ越小，VAWT的性能提升越明显。当角度δ=0°时，CP增加11.68%。在此基础上，100°对应δ=0°的调整规律