基于角度计算的 10 千瓦风力涡轮机叶片推力确定方法

J. R. Dorrego-Portela, A. E. Ponce-Martínez, Eduardo Pérez-Chaltell, Jaime Peña-Antonio, Carlos Alberto Mateos-Mendoza, J. Robles-Ocampo, P. Y. Sevilla-Camacho, Marcos Aviles, J. Rodríguez-Reséndíz
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摘要

本文通过考虑特万特佩克地峡的特征风速,获得了 10 千瓦风力涡轮机叶片上推力的行为。由于推力与位置点和叶片旋转有关,因此分析机械力对于高效、安全地设计组成风力涡轮机的不同元件至关重要。为此,我们分析了小功率风力涡轮机三个叶片各自产生的推力。每个叶片的角度位置 (θ) 从 0° 到 120° 不等,叶片被分段 (r),并测试了不同的风速,如切割风速、设计风速、平均风速和最大风速。结果表明,推力随风速和高度的增加而成正比增加,但在每个叶片段和每个角度位置上的推力表现不同。这种方法可以确定发生最小和最大推力的角度位置和确切的叶片段。位于 90° 角位置的叶片 1 是 P15 上受推力影响最大的叶片。当叶片旋转 180° 时,推力减少了 9.09 N,即减少了 66.74%。此外,这项研究还能让设计人员了解推力导致的叶片偏转。这一信息可用于避免与塔架发生碰撞。就本研究中使用的转子半径而言,推力造成的叶片偏转为 10% 至 13%。这些结果保证了测试发电机在工作条件下的运行。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Angle Calculus-Based Thrust Force Determination on the Blades of a 10 kW Wind Turbine
In this article, the behavior of the thrust force on the blades of a 10 kW wind turbine was obtained by considering the characteristic wind speed of the Isthmus of Tehuantepec. Analyzing mechanical forces is essential to efficiently and safely design the different elements that make up the wind turbine because the thrust forces are related to the location point and the blade rotation. For this reason, the thrust force generated in each of the three blades of a low-power wind turbine was analyzed. The angular position (θ) of each blade varied from 0° to 120°, the blades were segmented (r), and different wind speeds were tested, such as cutting, design, average, and maximum. The results demonstrate that the thrust force increases proportionally with increasing wind speed and height, but it behaves differently on each blade segment and each angular position. This method determines the angular position and the exact blade segment where the smallest and the most considerable thrust force occurred. Blade 1, positioned at an angular position of 90°, is the blade most affected by the thrust force on P15. When the blade rotates 180°, the thrust force decreases by 9.09 N; this represents a 66.74% decrease. In addition, this study allows the designers to know the blade deflection caused by the thrust force. This information can be used to avoid collision with the tower. The thrust forces caused blade deflections of 10% to 13% concerning the rotor radius used in this study. These results guarantee the operation of the tested generator under their working conditions.
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