多工况下内装式永磁电机损耗研究与分析  

Research and analysis on loss of built-in permanent magnet motor under multiple operating conditions

作　　者：李帅耀 李家春[1] 李擎 LI Shuaiyao;LI Jiachun;LI Qing(School of Mechanical Engineering,Guizhou University,Guiyang 210018,Guizhou,China)

机构地区：[1]贵州大学机械工程学院,贵州省贵阳市550000

出　　处：《农业装备与车辆工程》2023年第10期42-45,69,共5页Agricultural Equipment & Vehicle Engineering

基　　金：贵州省科技计划项目(黔科合成果[2019]4412号,黔科合支撑[2022]一般196)。

摘　　要：针对现代工业生产中永磁同步电机(PMSM)工况复杂造成损耗难以准确计算的问题,利用Maxwell电磁仿真软件,对提升机内装式永磁电机欠工况和过工况下的损耗进行了定量分析。除额定工况外具体研究了3个不同负载下永磁同步电机各类损耗值及变化情况,并对定子铁心损耗进行了分区域分析。结果表明,在低速大转矩永磁同步电机中,绕组铜耗高达电机损耗的80%,机械损耗可根据经验值估算,定子铁心损耗主要集中在齿身齿轭上;随负载增大,绕组铜耗和铁心损耗显著增加,涡流损耗变化不明显。样机制造后实测效率达到91%,基本项误差在6.76%以内。为同类电机的能效控制和散热优化提供参考。Aiming at the problem that the losses of permanent magnet synchronous motors(PMSM)are difficult to calculate accurately due to the complex working conditions in modern industrial production,the Maxwell electromagnetic simulation software was used to quantitatively analyze the loss of hoist built-in permanent magnet motor under under-working conditions and over-working conditions.In addition to the rated conditions,the magnitude and variation of various losses of the permanent magnet synchronous motor under three different loads were specifically studied,and the sub-regional analysis of the stator core loss was carried out.The results showed that in the low-speed and high-torque permanent magnet synchronous motor,the copper loss of the winding was as high as 80%of the motor loss.Mechanical loss could be estimated according to empirical value,and the stator core loss was mainly concentrated on the gear body and yoke.With the increase of load,winding copper loss and core loss increased significantly,and eddy current loss did not change significantly.After the prototype was manufactured,the measured efficiency reached 91%,and the basic term error was within 6.76%.The research content provides a reference for the energy efficiency control and heat dissipation optimization of similar motors.

关 键 词：损耗 永磁同步电机 负载 多工况 

分 类 号：TM301.4[电气工程—电机]