【作者】 王勇；

【导师】 张立勋；

【作者基本信息】 哈尔滨工程大学 ， 机械工程， 2016， 硕士

【摘要】 随着石油等不可再生能源供需矛盾的加剧,开发可再生新能源成为各国战略研究趋势,而风能因为其具有资源丰富、开发性价比高、无污染等优点从而成为最具开发价值的绿色新能源之一。相对于发展成熟的水平轴风力机,直翼立轴风力机具有结构简单重心低、无对风装置、易安装维护等优点受到关注,但是局限于启动性能差、风能利用率低等缺点无法得到广泛商业应用。针对直翼立轴风力机存在的问题本文设计了一种可变桨距直翼立轴风力机,通过变桨距规律的应用提升风力机启动性能和低风速下风能利用率。根据国内外研究现状,在分析直翼立轴风力机运行原理的基础上完成了一种可变桨距小型直翼立轴风力机机电一体设计方案,结构方案设计包括传动设计、变桨距机构设计等,控制系统方案设计包括变桨伺服系统、数据通信与采集等硬件软件设计。通过对直翼立轴风力机运动与受力分析,在理论上验证了变桨距对直翼立轴风力机性能有提高作用,并基于ANSYS Workbench完成了所设计风力机强度、刚度、模态等结构性能分析与校核。通过对变桨距原理分析与桨叶气动实验相结合的方式完成了变桨距规律设计验证与优化,基于MATLABSimulink工具对变桨距控制系统进行建模仿真,完成对控制系统参数模拟调节验证了变桨距规律应用可行性,并对变桨距存在误差进行了分析。完成变桨距直翼立轴风力机样机研制与实验平台搭建,基于DESPACE半物理仿真平台在风场下对其变桨距闭环伺服控制系统进行调节并通过实际相位补偿实验提高变桨跟随性能,通过对比实验验证了直翼立轴风力机的启动性能并测验其发电性能,完成了变桨距误差对其性能影响实验。更多还原

【Abstract】 With the intensification of the contradiction between supply to demand of oil and other non-renewable energy, the development of new renewable energy is becoming the strategic research trend to various countries, and wind energy is becoming the one of the most valuable green energy because of the advantages of rich in resources,cost-effective,no pollution. Relative to the mature development of horizontal axis wind turbine, the straight-bladed vertical axis wind turbine was concerned of the advantage including simple structure with lower center of gravity, collecting wind with no yaw device, easy to install and maintain,but limited to the poor startup performance and low utilization rate of wind power it couldn’t be widely commercial applied. Aiming at the problem of the straight bladed vertical axis wind turbine,a variable pitch vertical wind turbine was designed in this paper to improve the startup performance and the utilization rate of wind power through the application of the variable pitch law.Complete the electromechanical integration design of the straight-bladed vertical wind turbine with variable-pitch according to the domestic and foreign development and based on the analysis of the operation principle.The structure design including the design of transmission, pitch-controlled structure and so on. The control system design including pitch-controlled servo system, data communication system and other hardware and software design.Through the analysis of the movement and force to the straight-bladed vertical wind turbine, it can be verified that the application of variable-pitch improve the performance of the straight-bladed vertical wind turbine. Based on the ANSYS Workbench to complete the strength, stiffness and modal analysis and checking of the straight-bladed vertical axis wind turbine.Complete the design and optimization of the variable-pitch law by analysist of the theory of the variable-pitch wind turbine in combination with the aerodynamic experiment of the blade. Complete the modeling and simulation of the variable-pitch control system based on the MATLAB Simulink tool and adjus the parameters of the simulation control system to verify the application of variable-pitch law is feasibility and have analysed the error of the variable-pitch.Complete the manufacture of the variable-pitch vertical axis wind turbine prototype and set up the experiment platform, adjustet the closed-loop servo control system in the wind field and improve the performance of variable-pitch following by the actual phase compensation experiment. Verify the startup performance of variable-pitch vertical axis wind turbine through the contrast experiment and and test its power performance. Complete the impact experiment of the variable-pitch error to its performance.更多还原