特种车辆轮毂电机铁心损耗计算研究
Research on Calculation of Iron Losses of In-wheel Motor for Special Vehicle
刘浩 1吴学雷 1李洪彪 1白锦洋 1张冉1
作者信息
- 1. 北京航天发射技术研究所,北京,100076
- 折叠
摘要
铁心损耗在特种车辆轮毂电机损耗中占据较大比例,直接影响驱动系统的效率和温升.为准确计算铁心损耗,以一台额定功率70 kW的轮毂电机为研究对象,通过时步有限元分析得到定子铁心各个区域的磁密波形,并分别对径向磁密、切向磁密波形进行谐波分析,进而研究旋转磁化和谐波磁场对轮毂电机定子铁耗的影响.在进行磁密波形及其谐波分析后,采用3种铁耗计算方法分别计算轮毂电机定子铁耗,从轮毂电机效率及损耗试验数据中分离出定子铁耗值,并与不同方法的计算结果进行比对分析,结果表明同时考虑旋转磁化及谐波磁场影响的计算方法精度最高,其计算结果与试验值最相近,验证了计算方法的有效性.
Abstract
Iron loss occupies a large proportion of the losses of in-wheel motor for special vehicle,which directly affects the efficiency and temperature rise of the drive system.In order to accurately calculate the iron loss,time-stepping finite element analysis is adopted to analyze the flux density waveforms at different regions of the stator core by taking the in-wheel motor with rated power of 70 kW for example.Harmonic analysis of radial and tangential flux density waveforms at different regions of the stator core is carried out.The impact of rotating magnetic field and harmonic component on the stator iron loss is further studied.Three different iron loss calculation methods are adopted to calculate the stator iron loss after the flux density waveforms and harmonic analysis are carried out.The stator iron loss values separated from the efficiency and loss test of the in-wheel motor are compared with the calculation values of different calculation methods.The results show that the calculation method in consideration of the effect of rotating magnetic field and harmonic component has the highest accuracy and its calculation result is the closest to the test result,which verifies the validity of the calculation method.
关键词
特种车辆/轮毂电机/时步有限元分析/铁耗/旋转磁场Key words
special vehicle/in-wheel motor/time-stepping finite element analysis/iron loss/rotating magnetic field引用本文复制引用
出版年
2024
NETL
NSTL
万方数据