2MW风力发电机组变桨传动系统设计研究

发布时间：2018-04-28 15:33

本文选题：变桨传动系统 + 载荷计算及处理技术　；参考：《大连理工大学》2015年硕士论文

【摘要】：随着风力发电机组向大型化、大叶轮直径、低风速风资源地区发展,风力发电机组对风力发电机组变桨系统可靠性的要求也随之越来越高,进而对风力发电机组变桨传动系统在技术设计方面的要求也更加精益求精。变桨轴承、变桨驱动齿轮箱、变桨伺服电机以及连接驱动和轴承间传动的开式齿轮是变桨传动系统的重要零部件,这些零部件是否能满足风力发电机组20年使用寿命,是否能满足50年一遇极端阵风,是否能在设计载荷条件下满足风力发电机组叶片的驱动,从而能否保证风力发电机组的功率调节和气动刹车,以上这些对整个风力发电机组能否安全运行是十分必要。近些年,大兆瓦级风力发电机组变桨系统设计过程中存在许多现实工程的问题,针对此类问题,为提高风力发电机组变桨传动系统可靠性,本文以2MW变桨传动系统设计为研究对象,改变传统对于齿轮承载能力计算的简单工程算法和方法,优化设计应用一种能够满足GL导则设计认证要求的载荷分析处理方法、开式齿轮承载能力计算方法。首先,建立系统可靠度评估模型,对齿轮传动系统进行了体积优化设计,提出一种风力发电机组变桨系统叶片根部载荷处理方法,将复杂、随机的疲劳载荷分布(LDD)处理成为可以直接用于设计计算的当量载荷,为整个传动系统的设计计算以及各个零部件的校核提供理论依据；其次,基于宏观参数优化结果对齿轮进行承载性能研究；接着,以选定的轴承和开齿系统设计参数作为输入条件,设计了轴承和轴承内圈的开式齿轮传动副。最后,根据设计结果,参考GL导则,进一步评估风力发电机组变桨系统的设计安全要求对变桨传动系统可靠性的支撑作用。为大功率风电机组开发提供了新的设计思路、方法和技术手段参考。
[Abstract]:With the development of wind turbine in large scale, large impeller diameter and low wind speed, the demand of wind turbine on the reliability of wind turbine propeller system becomes higher and higher. Furthermore, the technical design requirements of the variable propeller drive system of wind turbine are also improved. Variable propeller bearings, variable propeller drive gearboxes, variable propeller servo motors, and open gears connected to drive and interbearing drive are important parts of the variable propeller drive system. Can these parts meet the 20 years service life of wind turbines? Whether it can meet the extreme gust in 50 years, whether it can satisfy the blade drive of wind turbine under the condition of design load, so as to ensure the power regulation and pneumatic brake of wind turbine, It is necessary for the whole wind turbine to run safely. In recent years, there are many practical engineering problems in the design of large megawatt wind turbine variable propeller system. In order to improve the reliability of variable propeller transmission system of wind turbine, This paper takes the design of 2MW variable propeller transmission system as the research object, changes the traditional simple engineering algorithm and method for the calculation of gear bearing capacity, and optimizes the design and application of a load analysis and processing method that can meet the requirements of GL guide design certification. Calculation method of load capacity of open gear. First of all, the reliability evaluation model of the system is established, and the volume optimization design of the gear transmission system is carried out, and a method to deal with the load at the blade root of the variable propeller system of the wind turbine is proposed, which will be complicated. The random fatigue load distribution (LDD) treatment becomes the equivalent load that can be directly used for design and calculation, which provides the theoretical basis for the design and calculation of the whole transmission system and the verification of each component. Secondly, Based on the results of macroscopic parameter optimization, the bearing performance of gear is studied. Then, the open gear transmission pair of bearing and bearing inner ring is designed with the selected design parameters of bearing and open gear system as input conditions. Finally, according to the design results and referring to the GL guidelines, the supporting role of the design safety requirements of the variable propeller system for the reliability of the variable propeller drive system of the wind turbine is further evaluated. It provides a new design idea, method and technical reference for the development of high power wind turbine.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM315

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