以大型海上风电机组前机座与其相邻系统部件为研究对象,采用有限元方法,建立仿真计算与分析模型,基于控制变量法研究前机座结构形式对各相邻系统部件的影响规律,并通过综合法分析得到相邻系统部件安全性能最优的结构设计。结果表明：相比常规结构,前机座竖向（环形）肋板位于上摩擦片,对偏航组件系统安全系数提高3.3%;其横向肋板位于轴承座与机座接触面后侧,对轴承座组件系统安全系数提高3.4%;后端法兰到轴承座与机座接触面距离适当加长（200 mm）,对后机座组件系统安全系数提高2.9%;在保证系统结构安全性的基础上,可实现最大程度上的系统结构减重,达到结构与性能最优化设计。
Abstract
Taking the main frame of a large offshore wind turbine and its adjacent system components as the research object, the simulation calculation and analysis model are established by using finite element method. The influence of the main frame structure on the adjacent system components is researched by the control variable method. And the optimal structural design of the adjacent system component security is obtained by comprehensive analysis. The results show that: Compared to the conventional structure, the vertical （circular） floor of the main frame is located on the upper friction plate. It increases the safety coefficient of the yaw component system by 3.3%. The horizontal floor is located on the rear side of the main frame and main bearing housing connection. It increases the safety coefficient of the main bearing housing component system by 3.4%. The distance between the rear end flange and contact surface between the main frame and main bearing base is properly extended （200 mm）. It increases the safety coefficient of the rear frame component system by 2.9%. On the basis of ensuring the safety of the system structure, the weight of the system structure is reduced by the maximum degree to achieve the optimization design of structure and performance.
关键词
风电机组 /
前机座 /
结构设计 /
系统优化设计 /
强度校核
Key words
wind turbines /
main frame /
structural design /
system optimization design /
strength assessment
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