Studies on Horizontal Axis Wind Turbine with Passive Teetered Brake & Damper Mechanism
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概要
- 論文の詳細を見る
In order to improve the reliability of megawatt wind turbines, the passive teetered brake & damper mechanism is applied. Its two unique effects, as its name implies, are braking and damping. The passive brake & damper mechanism is useful for variable speed control of the large wind turbine. It is comprised of teetering and feathering mechanisms. When the wind speed exceeds the rated wind speed, the blade is passively teetered in a downwind direction and, at the same time, a feathering mechanism, linked to toe teetering mechanism through a connecting rod is activated. In this study, two kinds of blades, a twisted tapered blade and a non-twisted rectangular one, are used with this passive mechanism. Testing of the model horizontal axis wind turbine in a wind tunnel showed that the passive mechanism can suppress the over-rotational speed of the rotor. The velocity distribution around the rotating blade is measured by a two-dimensional laser Doppler velocity meter. It is found that the passive teetered brake & damper mechanism can suppress the over-rotational speed of the rotor, and the braking effect is caused by the reduction of the angle of inflow for the blade.
- 一般社団法人日本機械学会の論文
- 1998-02-15
著者
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Maeda T
Department Of Mechanical Engineering Mie University
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Kamada Yasunari
Department Of Mechanical Engineering Mie University
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SHIMIZU Yukimaru
Department of Mechanical Engineering, Mie University
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MAEDA Takao
Department of Mechanical Engineering, Mie University
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Shimizu Yukimaru
Department Of Mechanical Engineering Mie University
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Maeda Takao
Department Of Electrical Engineering Faculty Of Engineering Science University Of Tokyo
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Maeda Takao
Department of Computer Software, School of Computer Science and Engineering, University of Aizu
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