摘要
以1.25 MW风力发电机组传动系统为研究对象,使用集中参数法建立传动系统的动力学模型,并对动力学模型方程进行求解,对求解结果进行分析,分析了传动系统的固有频率特性和响应特性,分析结果表明:传动系统在启动阶段发生较小的扭转变形,并网阶段发生较大的扭转变形;并网运行中,当风力和电网发生突变时,传动系统发生较大的扭转变形,其中电网突变对传动系统的影响更大;在不同的气动转矩作用下,气动转矩越大,风力发电机组传动系统受到的冲击也越大;传动系统的固有频率比较大,在工作频率附近不会发生共振。
Taking the drive-train for 1.25 MW wind turbine as objective, the paper expounds how dynamic model for drive-train system of the turbine is built by means of lumped mass method, and how the equation of dynamic model is solved. Furthermore, it analyzes behaviors of inherent frequency and response of the drive-train system. The analysis result indicates that the torsional deformation of the drive-train system is smaller at the starting stage, and larger in grid connected stage. If sudden change in wind and power net＇s load happens, the larger deformation will appear. The larger the wind torque, the greater the impact upon the drive-train system. The resonance will not happen in the vicinity of running frequency due to the higher inherent frequency.
出处
《起重运输机械》
2009年第5期79-83,共5页
Hoisting and Conveying Machinery
基金
上海市重点科技攻关项目资助(编号:071105116)
关键词
风力发电机
传动系统
振动
集中参数法
wind turbine
drive-train system
vibration
lumped mass method
