摘要
以一台117kW、60000r/min背绕式定子绕组的高速永磁同步发电机为例,建立电机三维电磁场全域数学模型,给出了求解域内的基本假设及相应的边界条件;采用有限元法,计算了电机空载及额定负载状态下端部区域的磁密分布,并与部分实测数据进行了对比。同时,以气隙磁密为主要研究对象,定量分析气隙磁密在端部区域的变化情况,然后对发电机端面附近区域的转子护套、气隙、定子齿顶及定子轭部磁密径向分量和轴向分量进行分析,给出了磁密径向分量和轴向分量沿电机轴向的变化曲线。最后,对高速永磁同步发电机不同转速下背绕式定子绕组端部漏磁场进行计算,研究端部漏磁随转速的变化关系。得到了一些有益的结论,为深入研究高速永磁电机提供了理论依据。
Taking a 117 kW, 60 000 r/min high-speed permanent magnet generator winding as an example, the （HSPMG） with back around mathematical model for 3-D electromagnetic field analysis was established, and the basic assumptions and boundaries were given. The end region flux distributions in the generator operating at non-load and rated load were calculated by using the finite element method, some of which were compared with the test data. Taking the air gap flux density as the main study object, the variation of the flux density in the end region was obtained after the quantitative analysis, and then the radial component and the axial component of the flux density in sleeve, air-gap, tooth-top and stator yoke were analyzed. Based on the above analysis, the variation of the radial component density and the axial component density along the axial direction were obtained. Lastly the end region flux leakage of the generator running at different speeds was calculated and the relationship between the flux leakage and speed was studied. The obtained conclusions may provide useful reference for the design and research of HSPMG.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2012年第24期80-87,14,共8页
Proceedings of the CSEE
基金
国家863高技术基金项目(2007AA050501)~~
关键词
高速永磁电机
端部电磁场
背绕式定子绕组
漏磁
high speed permanent magnetic generator （HSPMG）
end magnetic field
back around winding
flux leakage
