摘要
本文针对永磁电机扁线导体受高频涡流效应影响较大的问题,以48槽8极扁线绕组永磁电机为研究对象,研究绕组损耗的影响因素。首先,建立了6层均匀扁线导体永磁电机二维场路耦合有限元模型,研究不同扁线层数、不同扁线横截面积对绕组损耗的影响。其次,基于槽内漏磁分布特性,探究扁线导体分割方式对绕组损耗的影响,从而提出一种非均匀矩形利兹线绕组结构。最后,对比分析了非均匀扁线绕组和非均匀矩形利兹线绕组这两种绕组结构的绕组损耗随频率的变化情况。研究表明,非均匀矩形利兹线绕组结构能够显著解决电机运行在高频高速时绕组损耗较大的问题,为解决新能源汽车高速电机绕组损耗的问题提供了方向。
In response to the significant influence of high-frequency eddy current effects on the flat wire conductors of permanent magnet motors,a 48 slot 8-pole flat wire winding permanent magnet motor is taken as the research object to study the factors affecting winding losses in this article.Firstly,a two-dimensional field circuit coupling finite element model of a 6-layer uniform flat wire conductor permanent magnet motor is established to study the influence of different flat wire layers and cross-sectional areas on winding losses.Secondly,based on the distribution characteristics of magnetic leakage in the slot,the influence of flat wire conductor segmentation on winding losses is explored,and a non-uniform rectangular Leeds wire winding structure is proposed.Finally,the variation of winding loss with frequency of non-uniform flat wire winding and non-uniform rectangular Leeds wire winding is compared and analyzed.The study shows that the non-uniform rectangular Leeds wire winding structure can significantly solve the problem of high winding losses when the motor operates at high frequency and high speed,providing a direction for solving the problem of winding losses in high-speed motors of new energy vehicles.
作者
冯雨
汪冬梅
梁艳萍
FENG Yu;WANG Dongmei;LIANG Yanping(Harbin University of Science and Technology,Harbin 150080,China)
出处
《大电机技术》
2025年第3期24-30,共7页
Large Electric Machine and Hydraulic Turbine
基金
黑龙江省“优秀青年教师基础研究支持计划”(YQJH2024076)。
关键词
新能源汽车
扁线电机
涡流效应
绕组损耗
new energy vehicles
flat wire motor
eddy current effect
winding losses
