大型双馈风力发电机设计和制造工艺
发布时间：2019-05-07 10:53
【摘要】：随着一系列优惠政策的出台和《可再生能源法》的颁布，我国风电装机容量已跃居世界第一，风电相关行业步入了高速发展时期，形成较为完备的上下游产业链。目前，风力发电机种类很多，其中占据主流的有两种：双馈风力发电机和永磁同步发电机。双馈风力发电机因可靠性高、技术日臻完善，成为当下风力发电机组中应用最多、装机容量最大，风电市场占有率最大的产品。然而，由于风力发电机应用场合特殊，维修成本极高以及市场竞争日益激烈，对风力发电机的结构设计和制造工艺要求越来越高。因此，为实现风力发电机系列化产品高质、高效开发与生产，不断提升大型双馈风力发电机设计和制造工艺水平将具有重要的工程实际指导意义。为此，本文以1.5MW双馈风力发电机为研究对象，运用电机设计与制造工艺基本理论和有限元分析等方法，探索双馈风力发电机结构的解析与数值综合设计方法和改进传统制造工艺的数控加工及装夹方法，具体研究内容如下： （1）综述风力发电、风力发电机组主流技术、双馈风力发电机的国内外研究现状；并系统阐述了双馈风力发电机的基本工作原理，重点分析了该发电机的内部电磁关系和功率特性关系，以及考虑超同步和亚同步两种运行状态下的功率流向，为后续的设计分析奠定理论基础。 （2）双馈风力发电机的综合设计方法。分析双馈风力发电机的极数、气隙长度和定转子槽型等电磁参数的选择方法，对转子的强度进行详细解析计算；同时运用ANSYS有限元软件对转子冲片与转轴过盈配合、以及转子强度进行仿真分析，解析与数值计算结果对比分析确保发电机结构设计可靠。 （3）双馈风力发电机的制造工艺改进。在双馈风力发电机的传统工艺设计基础上，运用数控设备建立改进转子线圈成型工艺的数控加工方法，同时建立发电机定子的翻身及吊装独特改进工艺，确保生产高质、高效。 综上，本文的设计分析为1.5MW双馈风力发电机的结构设计及制造工艺水平提升提供有效途径，，对大型同类发电机的开发应用亦具重要参考价值。
[Abstract]:With the introduction of a series of preferential policies and the promulgation of the Renewable Energy Law, the installed capacity of wind power in China has leapt to the top of the world, and wind power-related industries have entered a period of high-speed development, forming a relatively complete upstream and downstream industrial chain. At present, there are many kinds of wind turbines, among which there are two main types: doubly-fed wind generators and permanent magnet synchronous generators. Due to its high reliability and perfect technology, doubly-fed wind power generator has become the most widely used, installed capacity and the largest market share of wind power generation. However, due to the special applications of wind turbines, high maintenance costs and increasingly fierce market competition, the requirements for structural design and manufacturing process of wind turbines are becoming higher and higher. Therefore, in order to realize the high-quality, high-efficiency development and production of series products of wind turbines, it is of great significance to improve the design and manufacturing process level of large-scale doubly-fed wind turbines. Therefore, this paper takes 1.5MW doubly-fed wind generator as the research object, uses the basic theory of motor design and manufacture technology and finite element analysis, etc. The analytical and numerical integrated design method of doubly-fed wind generator structure and the numerical control machining and clamping method for improving traditional manufacturing process are explored. The specific research contents are as follows: (1) the main technologies of wind power generation and wind turbine are summarized, and the main technologies of wind power generation and wind turbine are summarized. The research status of doubly-fed wind generator at home and abroad; The basic working principle of doubly-fed wind generator is systematically described, and the internal electromagnetic relation and power characteristic relation of the generator are emphatically analyzed, and the power flow direction under the conditions of super-synchronous and sub-synchronous operation is also considered. It lays a theoretical foundation for the follow-up design analysis. (2) Comprehensive design method of doubly-fed wind generator. The selection methods of electromagnetic parameters such as pole number, air gap length and slot shape of doubly-fed wind generator are analyzed, and the strength of rotor is calculated in detail. At the same time, the ANSYS finite element software is used to simulate and analyze the interference fit between the rotor punch and the rotor shaft, and the strength of the rotor. The analytical and numerical results are compared to ensure the reliability of the generator structure design. (3) the manufacturing process of doubly-fed wind generator is improved. Based on the traditional process design of doubly-fed wind generator, the NC machining method for improving the forming process of rotor coil is established by using numerical control equipment. At the same time, the unique improvement process of generator stator turning over and hoisting is established to ensure the high quality and high efficiency of production. In summary, the design and analysis of this paper provide an effective way to improve the structure design and manufacturing process level of 1.5MW doubly-fed wind generator, and also have important reference value for the development and application of large-scale similar generators.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM315
本文编号：2471016
[Abstract]:With the introduction of a series of preferential policies and the promulgation of the Renewable Energy Law, the installed capacity of wind power in China has leapt to the top of the world, and wind power-related industries have entered a period of high-speed development, forming a relatively complete upstream and downstream industrial chain. At present, there are many kinds of wind turbines, among which there are two main types: doubly-fed wind generators and permanent magnet synchronous generators. Due to its high reliability and perfect technology, doubly-fed wind power generator has become the most widely used, installed capacity and the largest market share of wind power generation. However, due to the special applications of wind turbines, high maintenance costs and increasingly fierce market competition, the requirements for structural design and manufacturing process of wind turbines are becoming higher and higher. Therefore, in order to realize the high-quality, high-efficiency development and production of series products of wind turbines, it is of great significance to improve the design and manufacturing process level of large-scale doubly-fed wind turbines. Therefore, this paper takes 1.5MW doubly-fed wind generator as the research object, uses the basic theory of motor design and manufacture technology and finite element analysis, etc. The analytical and numerical integrated design method of doubly-fed wind generator structure and the numerical control machining and clamping method for improving traditional manufacturing process are explored. The specific research contents are as follows: (1) the main technologies of wind power generation and wind turbine are summarized, and the main technologies of wind power generation and wind turbine are summarized. The research status of doubly-fed wind generator at home and abroad; The basic working principle of doubly-fed wind generator is systematically described, and the internal electromagnetic relation and power characteristic relation of the generator are emphatically analyzed, and the power flow direction under the conditions of super-synchronous and sub-synchronous operation is also considered. It lays a theoretical foundation for the follow-up design analysis. (2) Comprehensive design method of doubly-fed wind generator. The selection methods of electromagnetic parameters such as pole number, air gap length and slot shape of doubly-fed wind generator are analyzed, and the strength of rotor is calculated in detail. At the same time, the ANSYS finite element software is used to simulate and analyze the interference fit between the rotor punch and the rotor shaft, and the strength of the rotor. The analytical and numerical results are compared to ensure the reliability of the generator structure design. (3) the manufacturing process of doubly-fed wind generator is improved. Based on the traditional process design of doubly-fed wind generator, the NC machining method for improving the forming process of rotor coil is established by using numerical control equipment. At the same time, the unique improvement process of generator stator turning over and hoisting is established to ensure the high quality and high efficiency of production. In summary, the design and analysis of this paper provide an effective way to improve the structure design and manufacturing process level of 1.5MW doubly-fed wind generator, and also have important reference value for the development and application of large-scale similar generators.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM315
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