2013 Fiscal Year Final Research Report
Quest for optimum rotor structure of low-center-of-gravity wind turbine
| Project/Area Number |
23561031
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Energy engineering
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| Research Institution | Tottori University |
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Principal Investigator |
HARA Yutaka 鳥取大学, 工学(系)研究科(研究院), 准教授 (60242822)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 低重心風車 / 風力発電 / 再生可能エネルギー / 対称翼 / キャンバー翼 / バタフライ風車 / 二重翼 / アルミ押出 |
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| Research Abstract |
The optimal rotor structure and blade section of low-center-of gravity wind turbines and its derivative butterfly wind turbines, which were characterized by simple structure without arms, had been studied by experimental and numerical analyses in order to reduce the cost and to improve the performance of small-sized vertical axis wind turbines. In the cases of large chord-to-radius ratio (c/R), cambered blade section was superior to symmetrical blade section in terms of the maximum power. Experiments of circular-blade butterfly wind turbine, whose blades had been made by aluminum extrusion, were carried out and the foothold for practical reduction in cost of small wind turbines was obtained.
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