5MW风机增速箱的效率优化

以MAAG型5 MW风力发电用增速箱为研究对象,根据无摩擦条件下的传动比和力矩分配公式,分析齿轮啮合损失、轴承损失和搅油损失,推导出有摩擦条件下的效率公式,并以此为依据在5 MW的输入功率下,分别对采用三行星轮、四行星轮、五行星轮及混合行星轮的结构形式进行了配齿。以增速箱效率为主优化目标,以重量为辅优化目标,进行了配齿优化。对优化后效率排在前列的行星轮结构,进行齿轮模数的计算,并根据强度条件进行了校核,提取了满足所有条件的最大效率的行星轮结构。使用Matlab软件在增速箱的总传动比不变的前提下,以效率最优为目标,对齿轮模数及效率进行了优化,并对优化后的结构进行了校核和检验。

Efficiency Optimization of 5 MW Wind Turbine Gearbox

With MAAG-type of wind turbine gearbox for 5 MW wind-mill generator as the research objective,the gear meshing losses,bearing losses and stirring oil loss are analyzed in terms of transmission ratio and torque distribution formula under the friction-free conditions.And the efficiency formula under the friction conditions is deduced,on the basis of which,the different planetary gear structures(3,4,5 and mixing) in the case of 5 MW input power are carried out respectively.With the gearbox efficiency as the major optimization objective,and the gearbox weight as the auxiliary optimization objective,gear matching optimization is carried out.The planetary structure with maximized efficiency in the front row is calculated in its gear module and checked in terms of strength conditions,whereby the planetary structure with the maximum efficiency to satisfy all the conditions is derived.Matlab software is used to carry out the optimization of gear module and efficiency in the pre-requisite for unchanges in total transmission ratio of gearbox and with the efficiency as the sptimization dojective,and the optimized structure is checked and tested.