[1]胡永攀,王志强,龙志强.永磁电动悬浮系统单目标性能优化[J].交通运输工程学报,2023,23(06):180-192.[doi:10.19818/j.cnki.1671-1637.2023.06.011]
　HU Yong-pan,WANG Zhi-qiang,LONG Zhi-qiang.Single-objective performance optimization of PM EDS system[J].Journal of Traffic and Transportation Engineering,2023,23(06):180-192.[doi:10.19818/j.cnki.1671-1637.2023.06.011]
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永磁电动悬浮系统单目标性能优化()
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《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

卷:
第23卷
期数:
2023年06期
页码:
180-192
栏目:
载运工具运用工程
出版日期:
2023-12-30

文章信息/Info

Title:
Single-objective performance optimization of PM EDS system
文章编号:
1671-1637(2023)06-0180-13
作者:
胡永攀1; 2; 王志强1; 3; 龙志强1; 3
(1.国防科技大学 智能科学学院,湖南 长沙 410073; 2.同济大学 国家磁浮交通工程技术研究中心,上海 201804; 3.国防科技大学 电磁悬浮与推进技术湖南省重点实验室,湖南 长沙 410073)
Author(s):
HU Yong-pan1; 2;  WANG Zhi-qiang1; 3;  LONG Zhi-qiang1; 3
(1. College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, Hunan, China; 2. National Maglev Transportation Engineering R & D Center, Tongji University, Shanghai 201804, China; 3. Hunan Provincial Key Laboratory of Electromagnetic Levitation and Propulsion Technology, National University of Defense Technology, Changsha 410073, Hunan, China)
关键词:
磁悬浮列车;  永磁电动悬浮;  永磁阵列;  浮重比;  浮阻比;  悬浮刚度;  电磁力
Keywords:
maglev train;  PM EDS;  permanent magnet array;  lift-to-weight ratio;  lift-to-drag ratio;  suspension stiffness;  electromagnetic force
分类号:
U270.2
DOI:
10.19818/j.cnki.1671-1637.2023.06.011
文献标志码:
A
摘要:
针对超高速永磁电动悬浮系统浮重比、浮阻比和悬浮刚度的优化问题,划分了求解域,建立了边界条件,明确了电磁力的表达式; 采用了控制变量法,选取了5组相互独立的特征参数,分析了特征参数对各优化指标的影响,指出了不同优化指标的可优化变量; 研究了不同悬浮间隙下浮重比最大时,永磁阵列波长、厚度、宽度和感应板宽度、厚度的取值,探讨了不同悬浮间隙下浮阻比最大时,永磁阵列波长和感应板厚度的取值,分析了不同悬浮间隙下悬浮刚度最大时,永磁阵列波长、厚度、宽度和感应板厚度的取值; 开展了永磁电动悬浮系统试验研究,得到了电磁力随永磁阵列线速度的变化规律。研究结果表明:超高速情况下,浮重比随永磁阵列剩磁的增加而显著增加,随单位波长永磁体个数的增加而单调增加,随永磁阵列波长和宽度的增加大体上先增加后减少,浮重比受永磁阵列厚度的影响明显; 浮阻比受永磁阵列剩磁、永磁阵列宽度、感应板宽度、悬浮间隙的影响较小,受感应板厚度影响明显,永磁阵列波长、厚度和速度越大对提高浮阻比越有利; 悬浮刚度随永磁阵列剩磁、永磁阵列宽度及厚度的增加单调递增,随永磁阵列波长的增加先增加后减少,随导体板厚度的增加先迅速增加然后缓慢下降,随悬浮间隙的增加变化显著,随速度几乎不发生变化; 以浮重比为优化指标,当悬浮间隙从0.012 m增加至0.020 m时,永磁阵列厚度、波长、感应板宽度的最优取值逐渐增加,而永磁阵列宽度的最优取值逐渐减小,浮重比最优值下降了约50.00%; 以浮阻比为优化指标,当永磁阵列波长从0.050 m增加至0.500 m时,感应板厚度的最优值逐渐增加,浮阻比的最优值提高了约2倍; 以悬浮刚度为优化指标,当悬浮间隙从0.012 m增加至0.020 m时,永磁阵列波长的最优取值逐渐增加,永磁阵列宽度最优值等于感应板宽度,感应板厚度的最优取值约为0.001 m,悬浮刚度的最优值下降约50.00%; 试验得到的线速度为0～50.00 m?s-1时的电磁力变化趋势与理论计算、仿真结果一致,悬浮力随速度的增加先迅速增加,然后逐渐平稳; 磁阻力随速度的增加先迅速增加,在线速度为4.00 m?s-1附近时达到最大,然后缓慢下降。
Abstract:
In view of the optimization of the lift-to-weight ratio, lift-to-drag ratio, and suspension stiffness of the ultra-high speed permanent magnet(PM)electrodynamic suspension(EDS)system, the solution domain was divided, and boundary conditions were established. In addition, the expression of the electromagnetic force was clarified. The control variable method was adopted, five groups of independent characteristic parameters were selected, the influences of characteristic parameters on each optimization indicator were analyzed, and the optimizable variables of different optimization indicators were pointed out. The values of wavelength, thickness, and width of the permanent magnet array and the width and thickness of the induction plate were studied when the lift-to-weight ratio was the maximum under different suspension gaps. The values of wavelength of the permanent magnet array and the thickness of the induction plate were studied when the lift-to-drag ratio was the maximum under different suspension gaps. The wavelength, thickness, and width of the permanent magnet array and the thickness of the induction plate were studied when the suspension stiffness was the maximum under different suspension gaps. An experimental study of the PM EDS system was carried out, and the variation rules of electromagnetic force with the linear velocity of the permanent magnet array were obtained. Research results show that at an ultra-high speed, the lift-to-weight ratio increases significantly with the increase in the remanence of the permanent magnet array, increases monotonically with the increase in the number of permanent magnets per unit wavelength, and generally increases initially and then decreases as the wavelength and width of the permanent magnet array increase. The lift-to-weight ratio is significantly affected by the thickness of the permanent magnet array. The lift-to-drag ratio is less affected by the remanence of the permanent magnet array, the widths of the permanent magnet array and the induction plate, and the suspension gap. In addition, the lift-to-drag ratio is significantly affected by the thickness of the induction plate. Greater wavelength, thickness, and speed of the permanent magnet array are more beneficial to improve the lift-to-drag ratio. The suspension stiffness increases monotonically with the increase in the remanence, width, and thickness of the permanent magnet array, initially increases and then decreases with the increase in the wavelength of the permanent magnet array, and initially increases rapidly and then slowly decreases with the increase in the thickness of the conductor plate. The suspension stiffness changes significantly with the increase in the suspension gap and changes little with speed. By taking the lift-to-weight ratio as the optimization indicator, when the suspension gap increases from 0.012 m to 0.020 m, the optimal thickness and wavelength of the permanent magnet array and the width of the induction plate gradually increase, while the optimal width of the permanent magnet array gradually decreases. The optimal lift-to-weight ratio drops by about 50.00%. By taking the lift-to-drag ratio as the optimization indicator, when the wavelength of the permanent magnet array increases from 0.050 m to 0.500 m, the optimal thickness of the induction plate gradually increases, and the optimal lift-to-drag ratio triples approximately. By taking the suspension stiffness as the optimization indicator, when the suspension gap increases from 0.012 m to 0.020 m, the optimal wavelength of the permanent magnet array gradually increases, and the optimal width of the permanent magnet array is equal to the width of the induction plate. Furthermore, the optimal thickness of the induction plate is around 0.001 m, and the optimal suspension stiffness decreases by approximately 50.00%. Through experiments, the changing trend of electromagnetic forces at linear speeds of 0-50.00 m?s-1 is consistent with the theoretical calculation and simulation results. The lift force first increases rapidly with the increase in speed and then gradually becomes stable. The detent force increases sharply with the increase in speed, reaches the maximum value when the linear speed is about 4.00 m?s-1, and then decreases slowly. 3 tabs, 19 figs, 30 refs.

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备注/Memo

备注/Memo:
收稿日期:2023-06-03
基金项目:国家自然科学基金项目(52232013)
作者简介:胡永攀(1988-),男,河南许昌人,同济大学博士后,工学博士,从事磁悬浮技术及直线电机研究。
通讯作者:龙志强(1967-),男,江西吉安人,国防科技大学研究员,工学博士。
更新日期/Last Update: 2023-12-30