Analysis of influence of pre-bend on pitch moment of wind turbine blades

作者：Li Chuan Feng^*; Wang Zhong Xia; Xu Yu; Xu Jian Zhong

来源：Journal of Engineering Thermophysics, 2010, 31(6): 947-950.

• Attack angle
• Blade elements
• Commercial software
• Momentum theory
• Pitch angle
• Pitch moment
• Wind turbine blades

Based on the blade element-momentum theory, the qualitative expression of aerodynamic pitch moment of pre-bend wind turbine blades was obtained, and its trend under ideal conditions was analyzed. The results were compared with those of the straight blades, and were computed using commercial software FOCUS. In the normal range of attack angles, the direction of aerodynamic pitch moment is the same with that of the increasing pitch angles. Pre-bend can increase aerodynamic pitch moment to a certain extent, and thereby can decrease total pitch moment.

• 出版日期2010