Numerical Investigation of Effects of Controlling Eccentric-Link Length of Variable-Pitch Straight-Bladed Darrieus Wind Turbine with Linkage Mechanism
Numerical Investigation of Effects of Controlling Eccentric-Link Length of Variable-Pitch Straight-Bladed Darrieus Wind Turbine with Linkage Mechanism
复制标题
连杆机构控制变桨距直叶片Darrieus风力机偏心连杆长度效果的数值研究
DOI：
10.11333/jwearonbun.46.4_29
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
小松 信義
中科院分区：
文献类型：
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作者：
定池 隆宏;河野 孝昭;木綿 隆弘;小松 信義
为了提高直叶Darrieus风力机的输出功率，课程组研制了一种由主杆、次杆、叶片杆和偏心杆组成的四杆变节距联动机构。本文通过计算流体动力学（CFD）分析，研究了控制偏心连杆长度对系统的影响。CFD计算结果表明，变偏心杆长变桨距工况下，风电机组转子上游前进侧和下游后退侧的转矩均高于定偏心杆长变桨距工况下的转矩。结果表明，变偏心连杆长度的变桨距工况比定偏心连杆长度的变桨距工况具有更高的功率系数。
In order to increase the power output of the straight-bladed Darrieus wind turbine, our research group developed a variable-pitch with a four-bar linkage mechanism that consists of a main link, second link, blade link, and eccentric link. In this study, we investigated the effects of controlling the eccentric-link length through computational fluid dynamics (CFD) analysis. The CFD results showed that the variable-pitch condition with the variable eccentric-link length during wind turbine rotation had higher torque on both the upstream advancing side and the downstream retreating side of the rotor than did the variable-pitch condition with the constant eccentric-link length. As a result, the variable-pitch condition with the variable eccentric-link length during wind turbine rotation had a higher power coefficient than did the variable-pitch condition with the constant eccentric-link length.