风力发电机传动系统的设计doc - 图文

学号

密级 公开

xxxxxxxxx本科生毕业设计

风力发电机传动系统的设计

学院名称：培黎工程技术学院 专业名称：机械设计制造及其自动化 学生姓名：马 指导教师：同 教授

二○一三年五月

BACHELOR'S DEGREE THESIS OF LANZHOU CITY UNIVERSITY

Design of Transmission System of Wind

Power Generator

College : School of Bailie Engineering & Technology

Subject : Mechanic Design Manufacturing and Automation

Name : Ma

Directed by : Professor Tong Changhong

May 2013

郑重声明

本人呈交的学位论文，是在导师的指导下，独立进行研究工作所取得的成果，所有数据、图片资料真实可靠。尽我所知，除文中已经注明引用的内容外，本学位论文的研究成果不包含他人享有著作权的内容。对本论文所涉及的研究工作做出贡献的其他个人和集体，均已在文中以明确的方式标明。本学位论文的知识产权归属于培养单位。

本人签名： 日期：

摘 要

风电产业的飞速发展促成了风电装备制造业的繁荣，传动系统是风电机组的核心系统，而齿轮箱又为双馈式风电机组传动系统的核心部件，备受国内外风电行业和研究机构的关注。但由于国内齿轮箱的研究起步晚，技术薄弱，尤其在目前兆瓦级风力发电机中，其属于易过载和过早损坏率较高的部件，且易出故障。与之相对应的，直驱式风力发电机具备低风速时高效率、低噪音等优点，但直驱式发电机组在风力发电越来越大型化发展的今天，其过于庞大的低速发电机运输、吊装困难，制造成本较高。二者相比较，考虑到结构、经济问题，我们就不得不重新思考如何提高齿轮箱的传动效率，从而提高传动系统的传动效率。

本文在对风力发电机的结构、原理深入了解、研究的基础上，对其传动系统的齿轮增速系统进行自主设计。

先确定齿轮箱的传动型式，选取一级行星和两级平行定轴传动方案，再分配传动比，通过计算，确定各齿轮齿数，并对其进行接触强度校核，结果符合安全要求。

关键词：风力发电机；传动系统；直驱式；双馈式；齿轮增速箱

ABSTRACT

The fast development of wind power industry helps to bring about booming of wind power equipment manufacturing business. Transmission system is the core of the wind turbine system and gear box, concerned by the wind power industry and research institutions at home and abroad, is the core component of doubly-fed wind turbine transmission system. But as a result of the research of domestic gear box started late and technology is weak, especially in the megawatt wind turbine, it belongs to easy to overload and high rates of premature failure parts and is easy to out of order. And at the same time, direct drive wind turbines is with the advantages of high efficiency and low noise when low wind speed, but direct drive wind power generator in more and more large-scale development today, low-speed generator is too large to transport and hoist and the manufacturing cost is higher. After compared with them, considering the structure and the economic problems, we are going to have to rethink how to improve the transmission efficiency of gear box, so as to improve the transmission efficiency of transmission system.

On the basis of deep understanding the structure and principle of wind turbine, i have been doing an independent design about gear growth system of wind turbine transmission system and it is presented in this paper.

Firstly, determine the transmission type of the gear box, select level of planets and two level parallel fixed axle transmission scheme, distribute transmission ratio, through calculation, determine the gear teeth, and contact strength check, the result is in conformity with the safety requirements.

Keyword: wind driven generator; drive system; direct drive; doubly-fed; step-up gear

box