Ansoft聚磁式横向磁通永磁盘式发电机空载特性研究
本文首先介绍永磁材料和横向磁通永磁电机的运行原理，给出基于磁路法的电机设计方法，设计了一台300V、200W的横向磁通电机样机。
其次，利用有限元法对电机磁场进行计算，用Maxwell Ansoft软件对电机的三文模型进行仿真，根据结果研究电机中的磁场分布。通过改变电机转速，分析电机磁链与感应电动势的变化，得到电机的空载特性。30141
最后，分别改变定子内外齿的角度和转子永磁体的角度来优化磁链波形，达到优化感应电动势波形的目的。
关键词 永磁电机 横向磁通 有限元分析 空载特性 优化
毕业论文设计说明书外文摘要
Title Research on no-load characteristic of flux-concentrated
transverse flux permanent magnet disk generator
Abstract
The permanent magnet motor is applied widely with the development of permanent magnet (PM) and control technology. Transverse flux permanent magnet motor is a new topology of electric motors, in which the magnetic circuit and electric circuit is decoupled to improve the power density effectively. Moreover, the structure of this machine can be conveniently designed and constructed.
Firstly, the PMs and the operating principle of this proposed machine are introduced. Based on the magnetic circuit method, a rated voltage 300V and rated power 200W prototype is designed.
Secondly, the Maxwell's equations is applied in electromagnetic calculation and the finite element method (FEM) is introduced. The 3D model of this machine is built to analyze the electromagnetic distribution by adopting FEM by using Maxwell Ansoft Software. The change of flux linkage and induced voltage is analyzed by adjusting the speed to obtain the no-load characteristics.
Finally, the flux waveform can be optimized by changing the angles of the teeth and the PM respectively to obtain the optimal EMF waveform.
Keywords permanent magnet motor transverse flux finite element method
no-load characteristic optimization
目 次
1绪论 1
1.1永磁电机的研究背景及意义 1
1.2横向磁通永磁电机的研究现状 2
1.3论文主要研究内容 5
2 电机设计 6
2.1永磁体基本特性 6
2.2电机结构和工作原理 7
2.3电机的等效磁路 10
3 电机有限元建模及分析 14
3.1 有限元软件介绍 14
3.2 有限元分析方法 14
3.3有限元建模过程 16
4仿真与优化 20
4.1空载特性 20
4.2感应电动势波形优化 24
结 论 30
致 谢 32
参考文献33
1 绪论
1.1 永磁电机的研究背景及意义
电机是以法拉第电磁感应定律和安培定律为基础，利用气隙磁场来进行电能和机械能交换的电磁装置。目前，产生励磁磁场的方法主要有两种，一种是永磁体励磁，另一种是电励磁。世界上第一台电机即为永磁体励磁电机，但因当时的永磁体磁能密度低，导致电机体积大，性能差，所以逐渐被电励磁电机取代[1]。