【作者】 张家宝；

【导师】 方红伟； 任永琴；

【作者基本信息】 天津大学 ， 电气工程， 2020， 硕士

【摘要】 发电机是波浪发电系统中的重要环节,本文以波浪发电为背景,设计了一台9 MW的超导永磁同步波浪发电机,确定了其基本结构和参数,在有限元软件中建立了电机模型,分析和验证了电机设计的合理性,然后分别利用田口算法和响应面法优化了电机的结构参数。具体的研究内容如下:(1)对超导永磁同步波浪发电机的基本结构及主要工作原理进行了深入分析,结合传统永磁同步发电机的设计方法,对电机各部分的具体结构参数进行了分析计算,确定了超导永磁同步波浪发电机的结构参数。(2)根据发电机的结构参数,在有限元软件中建立了电机模型,并对其进行了静态磁场、空载特性和负载特性分析。然后将超导永磁同步波浪发电机的超导块材替换为钕铁硼永磁体,分析了超导永磁同步波浪发电机相对传统永磁同步发电机的优越性。(3)利用田口算法对电机结构参数进行优化。确定优化目标、优化参数以及优化参数水平值,然后设计正交实验对电机性能进行分析,得到优化后的电机结构参数,并利用有限元软件验证了田口算法的有效性。(4)利用响应曲面法对电机的结构参数进行优化。确定优化目标、优化变量和样本点,对每个样本点对应的电机模型分别进行有限元分析,得到对应电机的输出性能,然后根据实验结果确定响应曲面方程,再利用粒子群算法对方程进行寻优,得到优化后的电机结构参数。然后利用有限元软件对优化方案进行仿真验证。更多还原

【Abstract】 The generator is an important part of wave power generation system.Based on wave power generation,a 9 MW superconducting permanent magnet synchronous generator is designed and the basic structure and parameters of the generator are determined in this paper.The finite element model of the generator is established and the rationality of the generator design is analyzed and verified.Then the structural parameters of the generator are optimized respectively using response surface method and Taguchi method.The specific research contents are as follows:(1)The basic structure and working principle of the superconducting permanent magnet synchronous generator are analyzed.The specific structure parameters of each part of the generator are analyzed and calculated with the design method of traditional permanent magnet synchronous generator.The structural parameters of the superconducting permanent magnet synchronous generator are determined.(2)According to the structural parameters of the generator,the finite element model of the generator is established.And the static magnetic field,no-load characteristics and load characteristics of the generator are analyzed.Then the superconducting bulks of the superconducting permanent magnet synchronous generator are replaced with Nd Fe B permanent magnets to compare the superiority of the superconducting permanent magnet synchronous generator over the traditional permanent magnet synchronous generator.(3)The structure parameters of the generator are optimized by Taguchi method.The optimization goals,optimization parameters and optimization parameter level values are determined.Then the orthogonal experiment is designed to analyze the generator performance to obtain the optimized structural parameters of the generator.The optimized model is analyzed by the finite element software to verify the effectiveness of Taguchi method.(4)The structural parameters of the generator are optimized by the response surface method.The optimization objectives,optimization variables and sample points are determined.The generator model corresponding to each sample point is respectively analyzed by finite element method to obtain the output performance of each generator model.The response surface equation is determined according to the experimental results,and the particle swarm optimization is used to optimize the equation to obtain the optimized structural parameters of the generator.The optimization result is verified through the simulation of the finite element software.更多还原