Development of downwind horizontal axis wind turbine for low wind speed condition

低风速条件下顺风水平轴风力发电机的研制

• 批准号: 18560167
• 负责人: MAEDA Takao
• 金额: $ 2.43万
• 依托单位: Mie University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560167/
• 关键词: Wind Energy; Fluid Engineering; New Energy; Renewable Energy; Environmental Technology

An experimental research work on the small horizontal axis wind turbine of the downwind-type, which the rotor rotates on the tower downstream side, is done for obtaining high power with stability corresponding to the change of wind speed and wind direction in the low wind speed regionInstallation of large wind turbines is limited by the problem of a site space, an aerodynamic noise and the electric power fluctuation. Therefore, the development of the small wind turbine is expected as the local energy, which can be setup also in the city area where a lot of electric power demands exist However, installation space should be small, and the condition such as being able to expect the output even in a low wind speed be overcome as a condition because of popularization in the city areaThe performance of the downwind type horizontal axis wind turbine was evaluated as solution to these problems in this research. The blade pitch angle of the downwind type wind turbine was changed in the experiment and the performance was evaluated. Moreover, the airfoil sweepback and the advancing angles were variously changed to correspond to wide use and it experimented. In addition, the performance that applied the rotor used to experiment to clarify the feature of the downwind type to the upwind type horizontal axis wind turbineAs a result, the optimum pitch angle in the downwind type is different from those of the upwind type. Moreover, the downwind type and the upwind type have understood it is sensitive for the change in the advancing angle though are mild the change in the performance into the sweepback The downwind type was obtained in the optimum pitch angle than the upwind type, and moreover, the influence of the sweepback and the advancing angle was obtained and the appearance regret tendency was obtained

对转子在塔筒下游侧旋转的顺风式小型水平轴风力发电机组进行了实验研究，以在低风速下稳定地响应风速和风向的变化而获得高功率。大型风力发电机的安装受到场地空间、气动噪声和电力波动问题的限制。因此，小型风力发电机作为当地能源的发展是值得期待的，在电力需求较多的城市地区也可以安装小型风力发电机，但安装空间要小，并且能够满足诸如由于在城市地区的普及，即使在低风速下的输出也被克服作为一个条件。本研究中对顺风型水平轴风力发电机的性能进行了评估，作为解决这些问题的方法。实验中改变顺风式风力机叶片桨距角并对其性能进行评价。此外，为了适应广泛的使用，对翼型后掠角和前进角进行了各种改变并进行了实验。另外，为了阐明顺风型水平轴风力机的特点，采用该转子的性能进行了实验，结果导致顺风型和逆风型的最佳桨距角不同。此外，顺风型和逆风型虽然后掠角性能的变化较小，但对前进角的变化很敏感。顺风型比逆风型获得了最佳桨距角，而且，得到了后掠角和前进角的影响，并得到了外观遗憾趋势