低速直驱永磁潜油电动机分析与设计  

Analysis and design of low-speed direct-drive permanent magnet submersible motor

作　　者：孟雨竹 曹建平 MENG Yuzhu;CAO Jianping(JiLin Railway Technology College,Jinlin 132299,China;CRRC Dalian R&D Co.,Ltd.,Dalian 116046,China)

机构地区：[1]吉林铁道职业技术学院,吉林吉林132299 [2]中车大连电力牵引研发中心有限公司,辽宁大连116046

出　　处：《电气应用》2022年第11期62-68,I0007,共8页Electrotechnical Application

基　　金：国家重点研发计划(2017YFB1201003)。

摘　　要：简要地介绍了低速永磁潜油电动机的结构,当定子外径与电动机长度确定时,对定子内径与电动机铜耗之间的关系进行了分析,得到了电动机铜耗最小时的定子内径大小,分析了永磁体磁化方向长度与相电流大小的关系。运用以上所得关系指导电动机设计,在电动机定子外径受限的情况下,为了实现电动机的低速直驱性能,选用分数槽集中绕组进行电动机设计,并设计了一台16极18槽永磁潜油电动机。运用有限元方法对其气隙磁场、空载反电动势和电磁转矩等性能进行了计算,以验证电动机设计的合理性。The structure of low-speed permanent magnet submersible motor is briefly introduced,and the relationship between stator inner diameter and copper loss is analysed when the stator outer diameter and the length of the motor are determined.The inner diameter of the stator with the minimum copper loss of the motor is obtained.The relationship between PM length and phase current is analyzed.Use the above relationship to guide the motor design.In order to realizing the motor’s low-speed direct-drive performance,choose fractional slot concentrated winding for motor design,and a 16-pole 18-slot fractional slot permanent magnet submersible motor was designed.The air gap magnetic field,EMF,electromagnetic torque are calculate by finite element method to verify the rationality of the design.

关 键 词：永磁潜油电动机 低速直驱 分数槽集中绕组 电磁性能 

分 类 号：TM351[电气工程—电机] TE93[石油与天然气工程—石油机械设备]