600 km/h高速磁浮牵引系统的配置及其关键参数的选择
林滢秦峰
Configuration for 600 km/h Highspeed Maglev Traction System and Selection of Key Parameters
LIN YingQIN Feng
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作者信息:同济大学磁浮交通工程技术研究中心， 201804， 上海
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Affiliation:Maglev Transportation Engineering and Technology R & D Center, Tongji University, 201804, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.08.019
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中图分类号/CLCN:U266.23∶U237
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栏目/Col:研究报告
摘要:
目的：目前上海磁浮列车示范运营线设计的最高运行速度为505 km/h，为适应600 km/h的高速运行，须对既有常导高速磁浮牵引系统的配置进行分析和优化设计。方法：站在牵引供电系统的角度，从直线电机稳态数学模型出发，在不改变直线电机基本结构和参数的前提下，提出了600 km/h高速磁浮牵引系统的优化方向：提高变流器的输出电压及容量，以及适当缩短牵引分区和定子段长度。基于以往工程可行性研究，对既有磁浮系统中牵引供电系统的相关边界条件进行了分析，认为馈电电缆和定子电缆限制了既有电机的输入电压和电流，而列车长度和定子开关站的数量又限制了定子段的长度，进一步明确了600 km/高速磁浮牵引系统关键参数的选取原则，并给出了建议的参数。以一条平直轨道的线路为例设计了牵引系统，并以此为基础进行了牵引仿真计算。结果及结论：对于5节编组的常导高速磁浮列车，适当缩短分区长度至20 km，定子段长度至800 m，采用32 MVA的变流器，则列车可在加速运行35 km后达到600 km/h的运行速度。
Abstracts:
Objective: The current design of Shanghai maglev train demonstration line has a maximum operational speed of 505 km/h. To adapt to the highspeed operation at 600 km/h, the configuration of existing normal conducting maglev traction system needs to be analyzed and optimized in design. Method: From the perspective of traction power supply system, based on the steadystate mathematical model of linear motors, the optimization direction for the 600 km/h highspeed maglev traction system is proposed without altering linear motor basic structure and parameters: i.e, increasing the output voltage and capacity of converter, as well as appropriately shortening the traction sections and stator segments. Based on previous engineering feasibility studies, an analysis of the relevant boundary conditions of the traction power supply system in the existing maglev system is conducted. It is found that the feeding cables and stator cables limit the input voltage and current of the existing motors, while the train length and the number of stator switch stations limit the length of stator segments. This further clarifies the principles for selecting key parameters of the 600 km/h highspeed maglev traction system and provides recommended parameters. A traction system is designed based on a straight track and traction simulation calculations are performed consequently. Result & Conclusion: For a 5car formation normal conducting maglev train, by appropriately reducing section length to 20 km and stator segment length to 800 m, and adopting a 32 MVA inverter, the train can reach an operating speed of 600 km/h after accelerating for 35 km.
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