多相电机定子绕组改进绕组函数的有限元分析  

Finite element analysis of improved winding function of stator winding in multiphase alternator

作　　者：林鹏[1] 戈宝军[1] 陶大军[1] 吕艳玲[1] 

机构地区：[1]哈尔滨理工大学电气与电机工程学院,黑龙江哈尔滨150080

出　　处：《电机与控制学报》2015年第2期53-59,65,共8页Electric Machines and Control

基　　金：国家自然科学基金(51407050)

摘　　要：提出改进绕组函数的有限元算法,解决了改进绕组函数的准确计算问题。根据有限元算法和叠加原理,分析了线圈和多相电机相绕组的改进绕组函数的基本特征,并根据该基本特征研究了多相电机气隙磁动势分布和气隙电感。结果表明,多相电机相绕组的改进绕组函数与绕组函数之间的差别为与多相电机结构有关的函数,电机正常运行时,该函数通常只含偶次谐波,并会影响电机气隙磁动势分布的计算,进而影响交、直轴电感曲线的谐波,但对交、直轴电感曲线的直流分量影响较小,基本可以忽略。In order to settle the problem in accurately calculating the improved winding function （IWF）,an algorithm for calculating the IWF based on finite element method （FEM） was proposed.According to the algorithm and the superposition principle,the IWF characteristics of one coil and one phase winding in the multiphase alternator were analyzed.Based on these characteristics,the distribution of the air-gap magneto motive force （MMF） and the air-gap inductances of the multiphase alternator were studied.It can be concluded from the results that,the difference between the IWF and the winding function （WF） is a function related to the structure of the multiphase alternator.When the alternator is under the normal operation condition,the function generally contain only even harmonics,and have an influence on the calculation of the air-gap MMF distribution,which has a further impact on the harmonic components of the d-axis and q-axis inductance curves,and a little impact on the dc components of the d-axis and q-axis inductance curves,which can be ignored basically.

关 键 词：多相电机 绕组函数 磁动势 电感 有限元法 

分 类 号：TM341[电气工程—电机]