Modelling and Analysing the Hydraulic Variable-Pitch Mechanism for a Variable-Speed Wind Turbine
Modelling and Analysing the Hydraulic Variable-Pitch Mechanism for a Variable-Speed Wind Turbine
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DOI：
10.1260/030952407783418711
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发表时间：
2007-10
期刊：
影响因子：
1.5
通讯作者：
Y. Kong;Zhixin Wang
中科院分区：
文献类型：
--
作者：
Y. Kong;Zhixin Wang
现代风力涡轮机通过用于功率控制的叶片变桨来控制变化的风速。为了满足变桨距机构驱动力和力矩大、响应快、刚度高等要求，通常将液压技术应用于变桨距机构。液压变桨距机构的数学模型大多简化为一阶惯性系统。这种简化的表示方法忽略了HVPM的实际特性，是不精确和不合理的。因此，HVPM建模的实现和分析，本文。仿真结果表明，变速涡轮机在额定风速以上时性能良好。
Modern wind turbines are controlled in varying wind speed by blade pitching for power control. To satisfy the requirement of large driving forces and torques, fast response and high stiffness, hydraulic technology is usually used in the variable-pitch mechanism. The model of the hydraulic variable-pitch mechanism (HVPM) is simplified by a first-order inertia system in most literature. This simplified representation neglects the actual characteristics of the HVPM, and it is not precise and reasonable. Therefore, HVPM modelling is implemented and analyzed in this paper. Simulation results show that consequently the variable-speed wind turbine performs well at above-rated wind speeds.