改变定子铁芯面积对分数槽集中绕组永磁同步电机铁耗的影响  

Influence of changing core area of stator on iron loss of FSCW permanent magnet synchronous machine

作　　者：王艾萌[1] 李大双 李小双 Wang Aimeng;Li Dashuang;Li Xiaoshuang(School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电测与仪表》2022年第1期45-50,共6页Electrical Measurement & Instrumentation

基　　金：北京自然科学基金资助项目(3172037);河北省自然科学基金资助项目(E2017502025)。

摘　　要：为研究改变定子铁芯面积对分数槽集中绕组永磁同步电机中铁耗的影响,针对定子槽提出了两组研究方案。在8极9槽永磁电机的基础上使用有限元软件,搭建了保证定子槽数不变仅增加定子槽宽整数倍和不改变每个定子槽尺寸仅增加定子槽数的两组电机。介绍了铁耗计算原理并通过仿真对比了两组电机谐波含量、定子轭部磁通密度和在不同转速下的铁耗与永磁体涡流损耗。分析结果表明,与增加电机定子槽数相比,适当地增加电机定子槽宽能有效降低电机铁耗、磁体涡流损耗和谐波含量,在不显著降低性能的情况下进行优化可确定定子槽的宽度。另外,与改变每个槽的面积相比,转矩脉动受电机定子槽数的影响更大。To study the effect of changing the core area of the stator on the iron loss in the fractional slot concentrated winding(FSCW)permanent magnet(PM)synchronous machine,two sets of research schemes are proposed for the stator slots,which are based on the 8-pole 9-slot PM machine,including only increasing integer multiple of the stator slot width and the number of stator slots without changing the stator slot size by finite element analysis(FEA).Then,the principle of iron loss calculation and detailed comparisons of the performance characteristics of the machines are presented that include important issues such as the harmonic of back EMF,stator yoke flux density,iron loss and eddy current losses in the magnets.The analysis results show that an optimization is carried out to determine the width of stator slot,which reduces the iron loss,magnet eddy current loss and harmonic content without significant decreases in the performance.It is found that properly increasing the width of the stator slot to reduce the influence of iron loss is better than increasing the number of stator slots of the machine.In addition,the torque ripple is more affected by the number of slots in the motor stator than by changing the area of stator slots.The filtering algorithm is applied to the magnetic flux leakage signal collected in the experiment.The results show that the filtering algorithm can filter the noise well.

关 键 词：分数槽集中绕组永磁同步电机 定子铁芯面积 定子槽宽 定子槽数 谐波 铁耗 

分 类 号：TM341[电气工程—电机]