中文摘要：

针对传统风力发电机机械传动部件易损坏、维修成本高等问题，首先对行星齿轮机构功率流进行分析与计算，然后以某典型1．5MW传统风力发电机为基础，提出一种基于机械液压混合传动的新型风力发电机结构并对其进行功率流计算及分析，验证了行星齿轮速度分布图法的正确性，说明只有在一定结构以及一定速度范围内才能保证风力发电机实现功率分流。进一步通过联合仿真对功率分流风力发电机与封闭功率流风力发电机进行建模及仿真分析，证明封闭功率流结构会使得机械部分损耗增加，系统效率降低，对混合传动系统的结构设计具有一定的参考意义。

英文摘要：

In conventional wind turbines, the mechanical is high. transmission parts are vulnerable and the cost of maintenance On account of these problems, the power flow of planetary gear set was calculated, a novel hydraulic-mechanical transmission wind turbine based on a representative 1.5 MW wind turbine was proposed and the power flow of it was analyzed. The velocity profile method was validated through calculation, proving that wind turbine power split is guaranteed only in a certain structure and velocity range. This paper further modelled and simulated the power split wind turbine and closed power flow wind turbine using co-simulation. The simulation indicated that the closed power flow structure would increase the mechanical wear and lower the system efficiency, which is of certain reference significance to the design of hybrid transmission structure.