作　　者： ; ; (万保中）;

机构地区： 哈尔滨工业大学

出　　处： 《液压气动与密封》 2017年第3期11-13,共3页

摘　　要： 采用液压伺服技术控制大型风力发电机变桨距可提高其发电效率。风力发电机使用环境恶劣,绝大部分风场的气温一年四季变化大。为研究在低温下大型风机液压变桨距控制系统的性能,设计了相应实验台,进行了不同温度正弦响应特性的对比实验,分析了不同温度下的输入在不同频率时产生相位差的原因。实验表明温度对大型风机液压变桨距控制系统响应的相位差无明显影响。 The power generation efficiency of large wind turbine could be improved with hydraulic servo pitch control system. Wind turbine usually works under adverse environment, and its operating temperature has significant variations throughout a year. Test bench is designed to observe the performance of the hydraulic pitch control system under low temperature. Sinusoidal response experiments with different working temperatures are carried out and the reason for the system phase lag with different temperatures and input frequency is analyzed.Experimental results show that the low working temperature has little effect on the frequency characteristic of large wind turbine's hydraulic pitch control system.

关 键 词： 风力发电机组 液压变桨距 正弦特性对比实验 低温实验

领　　域： [机械工程]