A New Approach Toward Power Output Enhancement Using Multirotor Systems With Shrouded Wind Turbines
A New Approach Toward Power Output Enhancement Using Multirotor Systems With Shrouded Wind Turbines
复制标题
使用带护罩风力涡轮机的多旋翼系统增强功率输出的新方法
DOI：
10.1115/1.4042235
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Koichi Watanabe
中科院分区：
文献类型：
--
作者：
Yuji Ohya;Koichi Watanabe
多旋翼系统是指在一个结构中包含多个旋翼的系统。磁流变阻尼器作为风力涡轮机系统具有很大的潜力，可以节省质量和成本，并显示出规模化能力。与裸风力涡轮机相比，对于给定的涡轮机直径和风速，具有边缘扩散器增强的风力涡轮机（B-DAWT）的带罩风力涡轮机已经证明了功率增加约2-5倍。在本研究中，B-DAWT用于多转子系统。在以前的工作中，已经研究了在各种配置中使用两个和三个B-DAWT的MRS的功率输出性能。在本研究中，MRS的空气动力学与五个B-DAWT，间隔在同一垂直平面垂直于均匀流的附近，进行了分析。与单机配置相比，五转子MRS配置的平均功率输出增加高达21%。因此，当采用B-DAWT作为MRS的单元时，总功率输出显著增加。随着MRS的单元数量从两个增加到五个，功率输出的增加变得越来越大。这是因为MRS中B-DAWT之间的差距流被加速，并由于边缘扩散器后面的涡流相互作用而导致压力降低区域。因此，具有更多B-DAWT的MRS可以将更多的风吸入涡轮机中，从而显示出更高的功率输出。
A multirotor system (MRS) is defined as containing more than one rotor in a single structure. MRSs have a great potential as a wind turbine system, saving mass and cost, and showing scale ability. The shrouded wind turbine with brimmed diffuser-augmented wind turbines (B-DAWT) has demonstrated power augmentation for a given turbine diameter and wind speed by a factor of about 2–5 compared with a bare wind turbine. In the present research, B-DAWTs are used in a multirotor system. The power output performance of MRSs using two and three B-DAWTs in a variety of configurations has been investigated in the previous works. In the present study, the aerodynamics of an MRS with five B-DAWTs, spaced in close vicinity in the same vertical plane normal to a uniform flow, has been analyzed. Power output increases of up to 21% in average for a five-rotor MRS configuration are achieved in comparison to that for the stand-alone configuration. Thus, when B-DAWTs are employed as the unit of a MRS, the total power output is remarkably increased. As the number of units for an MRS is increased from two to five, the increase in power output becomes larger and larger. This is because that the gap flows between B-DAWTs in a MRS are accelerated and cause lowered pressure regions due to vortex interaction behind the brimmed diffusers. Thus, a MRS with more B-DAWTs can draw more wind into turbines showing higher power output.
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DOI：
10.1016/j.jweia.2005.09.003
发表时间：
2005-12-01
影响因子：
4.8
作者：
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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