混合励磁风力发电机的三维磁场分析及磁路等效  

3D Magnetic Field Analysis and Magnetic Circuit Equivalent of Hybrid Excitation Wind Generator

作　　者：刘万振[1] 李岩[1] 安忠良[1] 唐任远[1] 

机构地区：[1]沈阳工业大学国家稀土永磁电机工程技术研究中心,沈阳110178

出　　处：《电气技术》2010年第1期1-5,共5页Electrical Engineering

摘　　要：为了确定混合励磁风力发电机的稳压调节范围,本文应用三维有限元方法对文中所采用结构混合励磁发电机磁场分布进行了分析,根据分析结果对原有磁路等效模型进行了改进,并通过样机试验验证了改进后磁路模型的正确性。研究得出:当无电励磁作用时,永磁体磁路可完全独立考虑,可忽略铁磁极的分流作用。但当加入电励磁进行磁场调节时,永磁体对电励磁磁路的分流作用则不能忽略,其影响发电机的最大稳压调节范围。In the paper, determining relationship between exciting current and speed of the hybrid excitation wind generator with constant-voltage, magnetic field distribution of the generator is obtained by using three-dimensional finite element method. According to results of the analysis, original equivalent magnetic circuit model is modified, and the new model is verified by the test results. The conclusions from this research: When no exciting current, permanent magnet magnetic circuit can be considered independently, and the traffic diversion effect of permanent magnet could be neglected. However, when adding exciting current to adjust the magnetic field, the traffic diversion effect of permanent magnet can not be neglected, and it can affect maximum adjustable speed range of the generator.

关 键 词：混合励磁 风力发电 变速恒压 有限元 等效磁路 

分 类 号：TM315[电气工程—电机]