中低速磁悬浮列车悬浮电磁铁悬浮力补偿方法研究
王滢刘方麟刘世杰陈邵宗吴谦
Levitation Force Compensation Methods for Suspension Electromagnets of Medium-Low Speed Maglev Trains
WANG YingLIU FanglinLIU ShijieCHEN ShaozongWU Qian
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作者信息:1.西南交通大学电气工程学院， 610097， 成都
2.磁浮技术与磁浮列车教育部重点实验室， 610097， 成都
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Affiliation:1.School of Electrical Engineering, Southwest Jiaotong University, 610097, Chengdu, China
2.Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, 610097, Chengdu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.20230131
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中图分类号/CLCN:U266.4
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栏目/Col:车辆制造与列车控制
摘要:
［目的］随着列车运行速度提升，中低速磁悬浮交通的轨道涡流效应会导致列车头部悬浮电磁铁的悬浮力减小，且速度越高，悬浮力减小越明显，因此有必要对中低速磁悬浮列车悬浮电磁铁悬浮力补偿方法进行研究。［方法］以中低速磁悬浮列车的单电磁铁为例，提出了一种考虑电磁铁非线性磁特性的悬浮力计算方法。利用电磁场有限元软件建立了电磁铁三维模型，分析了在200 km/h速度下，原有电磁铁在增加补偿电磁铁和头部电磁铁极长两种方法下的悬浮力。［结果及结论］两种电磁铁悬浮力的补偿方法为：在列车头部电磁铁前增加1块长300 mm左右的补偿电磁铁，并与列车头部两个主电磁铁串联；列车头部电磁铁极长增加300 mm左右。两种补偿悬浮力的方法分别可以提高悬浮力3.11 kN和3.5
Abstracts:
［Objective］ As the train speed increases, the eddy current effect of medium-low speed maglev transportation tracks leads to a reduction in the suspension force of the head suspension electromagnets. The higher the speed, the more significant the reduction in suspension force of suspension electromagnets for medium-low speed maglev trains. ［Method］ Taking the single electromagnet of a medium-low speed maglev train as example, a suspension force calculation method considering the nonlinear magnetic characteristics of the electromagnet is proposed. A three-dimensional model of the electromagnet is established using finite element electromagnetic field software. The suspension force is analyzed under a speed of 200 km/h, two compensation methods are compared: the original electromagnet adding a compensation electromagnet, and the original electromagnet extending the pole length of the head electromagnet. ［Result & Conclusion］ Two compensation methods for suspension force are identified: one is to add a compensation electromagnet about 300 mm length in front of the head electromagnet, connected in series with the two main electromagnets at the train head; the other is to extend the pole length of the head electromagnet by approximately 300 mm. These two levitation force compensation methods can increase the suspension force by 3.11 kN and 3.50 kN, respectively. The electromagnet module meets the levitation force requirements for train operation at a speed of 200 km/h.
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