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中文摘要：
为了提高变桨距控制的功率稳定性和减小机组的振动,在空气动力学研究的基础上,设计合理的风力机变桨距桨叶节距角变化率.建立了真实的电液比例变桨距执行机构,并与风力机设计软件BLADED相联组建成数字式半物理试验台.在此试验台上,通过改变泵的输出流量产生一系列的节距角变化率进行变桨距控制试验.试验结果表明,当节距角变化率为8°/s-10°/s时,不仅能够满足功率控制的要求,而且桨叶塔架的振动幅值不大.
英文摘要：
The appropriate pitch rate was investigated based on the wind turbine aerodynamic characteristics in order to improve the stability of output power and decrease the wind turbine vibration. A semiphysical simulation test-bed was built by designing a real electro-hydraulic proportional pitch-controlled system combined with the BLADED software for wind turbine design. Pitch-controlled tests were carried out at different pitch rates by changing the output flux of pump. The experimental results show that when the pitch rate is from 8°/s to 10°/s, the demand of power control is satisfied and the vibration amplitude of blades and tower are low.
同期刊论文项目
同项目期刊论文
NUMERICAL STUDIES ON THE PROPULSION AND WAKE STRUCTURES OF FINITE-SPAN FLAPPING WINGS WITH DIFFERENT
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