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新型转子结构的三自由度混合磁轴承损耗分析

鞠金涛 徐澎 朱熀秋 徐通 王祥飞 居方明 杜佳慧

鞠金涛, 徐澎, 朱熀秋, 徐通, 王祥飞, 居方明, 杜佳慧. 新型转子结构的三自由度混合磁轴承损耗分析[J]. 西南交通大学学报, 2022, 57(3): 675-681. doi: 10.3969/j.issn.0258-2724.20210903
引用本文: 鞠金涛, 徐澎, 朱熀秋, 徐通, 王祥飞, 居方明, 杜佳慧. 新型转子结构的三自由度混合磁轴承损耗分析[J]. 西南交通大学学报, 2022, 57(3): 675-681. doi: 10.3969/j.issn.0258-2724.20210903
JU Jintao, XU Peng, ZHU Huangqiu, XU Tong, WANG Xiangfei, JU Fangming, DU Jiahui. Core Loss Analysis of Three Degree-of-Freedom Hybrid Magnetic Bearing with Novel Rotor Structure[J]. Journal of Southwest Jiaotong University, 2022, 57(3): 675-681. doi: 10.3969/j.issn.0258-2724.20210903
Citation: JU Jintao, XU Peng, ZHU Huangqiu, XU Tong, WANG Xiangfei, JU Fangming, DU Jiahui. Core Loss Analysis of Three Degree-of-Freedom Hybrid Magnetic Bearing with Novel Rotor Structure[J]. Journal of Southwest Jiaotong University, 2022, 57(3): 675-681. doi: 10.3969/j.issn.0258-2724.20210903

新型转子结构的三自由度混合磁轴承损耗分析

doi: 10.3969/j.issn.0258-2724.20210903
基金项目: 国家自然科学基金(61973144);江苏省高等学校自然科学研究项目(18KJA413001)
详细信息
    作者简介:

    鞠金涛(1989—),男,博士研究生,研究方向为磁悬浮轴承,E-mail:jujintao1989@163.com

  • 中图分类号: TH133.3;TM341

Core Loss Analysis of Three Degree-of-Freedom Hybrid Magnetic Bearing with Novel Rotor Structure

  • 摘要:

    为减少六极径向-轴向混合磁轴承(radial-axial hybrid magnetic bearing,RAHBM)高速下转子产生的损耗,提出了一种部分叠片的转子结构. 首先,用等效磁路法推导了六极RAHMB的悬浮力数学模型,依据该模型设计磁轴承结构参数,对不同转子叠片深度下的铁损和悬浮力进行仿真分析,选择叠片深度最优值;然后,在有限元仿真软件中设定转子转速为50000 r/min,向六极RAHMB分别施加径向和轴向最大控制电流,分析磁轴承产生最大承载力情况下实心转子与部分叠片转子的损耗;最后,对部分叠片转子在正弦扰动电流下的涡流损耗和磁滞损耗进行计算和仿真. 研究结果表明:在产生最大承载力条件下,部分叠片转子结构能够将损耗降低69.7%,虽然轴向承载力减小了14.7%,但仍能够满足设计要求;部分叠片转子可将正弦扰动电流下铁损降低55.4%.

     

  • 图 1  六极RAHMB结构示意

    Figure 1.  Structure diagram of six-pole RAHMB

    图 2  六极RAHMB三维有限元模型

    Figure 2.  3D finite element model of six-pole RAHMB

    图 3  叠片转子内径优化仿真结果

    Figure 3.  Simulation results of inner diameter optimization for laminated rotors

    图 4  最大径向电流激励下铁损与径向悬浮力对比

    Figure 4.  Comparison of core loss and radial suspension force under excitation of maximum radial current

    图 5  最大轴向电流激励下涡流损耗与悬浮力对比

    Figure 5.  Comparison of core loss and axial suspension force under excitation of maximum axial current

    图 6  最大径向、轴向电流激励下铁损与悬浮力对比

    Figure 6.  Comparison of core loss and suspension force under excitation of maximum radial and axial current

    图 7  单片硅钢片模型

    Figure 7.  Sheet steel model

    图 8  软磁材料的磁滞回线

    Figure 8.  Hysteresis loop of soft magnetic material

    图 9  正弦激励下的铁损仿真与计算结果对比

    Figure 9.  Comparison between calculation and simulation results of core loss under sinusoidal excitation

    表  1  六极RAHMB主要参数

    Table  1.   Main parameters of six-pole RAHMB

    参数
    δrδz /mm 0.5
    Sr /mm2 233
    Sz /mm2 600
    轴向线圈最大安匝数 /(A·匝) 200
    径向线圈最大安匝数 /(A·匝) 300
    Θm /(A·匝) 320
    径向饱和磁感应强度 /T 1.20
    径向偏置磁感应强度 /T 0.60
    轴向饱和磁感应强度 /T 1.15
    轴向偏置磁感应强度/T 0.70
    转子外径 /mm 46
    转子轴向宽度 /mm 27
    径向定子轭外径/mm 93
    永磁体外径/mm 107
    轴向定子盘外宽度/mm 53
    轴向定子筒外径/mm 114
    下载: 导出CSV

    表  2  正弦电流激励下铁损计算与仿真结果

    Table  2.   Calculation and simulation results of core loss excited by sinusoidal current

    转子计算值/W 仿真值/W 误差/%
    涡流
    损耗
    磁滞
    损耗
    铁损
    部分叠片转子8.160.08648.258.664.7
    实心转子18.570.177818.7519.523.9
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-11-14
  • 修回日期:  2022-03-31
  • 刊出日期:  2022-04-14

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