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首页> 外文期刊>International journal of green energy >Starting improvement of micro-wind turbines operating in low wind speed regions
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Starting improvement of micro-wind turbines operating in low wind speed regions

机译：开始改进在低风速区域运行的微型风力涡轮机

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摘要

The study deals with the design and optimization of external and internal geometry of micro-wind turbines blades. A specified objective function which consists of the power coefficient and the starting time was defined and the genetic algorithm optimization technique in conjunction with the blade-element momentum theory was adopted to find the geometry of the blades including the distributions of the chord, the twist angle and also the shell thickness. Moreover, the allowable stress of the blades was considered as a constraint to the objective function. Results show that a reasonable compromise is achievable such that the starting time of the blades reduces noticeably in return for a small drop in the power coefficient. The significant improvement of the hollow blades over the solid ones indicates that the power coefficient and the starting performance could be improved through the appropriate distributions of the considered decision variables, i.e. the chord, the twist angle and also the shell thickness.
机译：该研究涉及微型风力涡轮机叶片的外部和内部几何形状的设计和优化。定义了一个由功率系数和启动时间组成的目标函数，并结合遗传算法优化技术，结合叶片动量理论，求出叶片的几何形状，包括弦的分布，扭转角还有外壳的厚度而且，叶片的容许应力被认为是对目标函数的约束。结果表明，可以实现合理的折衷，以使叶片的启动时间显着减少，以换取功率系数的小幅下降。中空叶片相对于实心叶片的显着改进表明，可以通过考虑的决策变量（即弦，扭转角以及壳体厚度）的适当分布来提高功率系数和启动性能。

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