【作者】 陶诗骏；

【导师】 刘少克；

【作者基本信息】 国防科学技术大学 ， 控制科学与工程， 2010， 硕士

【摘要】 低速磁浮列车采用直线感应电机牵引车辆,电机的特性影响着列车的牵引性能;磁浮列车与轮轨列车存在诸多不同,现有的《列车牵引计算规程》没有相关的计算支持。因此,针对低速磁浮列车直线感应电机的特性计算分析与牵引计算软件开发都具有重要的意义。主要工作如下:(1)针对解析方法和有限元数值方法的不足,采用多层理论,建立了磁浮列车用直线感应电机的计算模型,优化了模型参数,通过计算结果与实验测量对比验证了该理论计算的有效性与准确性。(2)针对工程应用中在次级复合材料间添加一层绝缘层材料的情况,分析了添加绝缘层对电机次级电磁场分布的影响,得出了绝缘层厚度与功率因数、牵引力的关系。针对列车运行过程中经常发生的初级与次级横向错位情况,探讨了错位对电机性能的影响。(3)针对中低速磁浮列车工程应用中牵引计算的空白,建立了其牵引计算模型:包括单质点受力模型、运动方程、电流和能耗计算、约束条件。分析了牵引策略特点,重点讲述了不同牵引策略下的算法流程的设计,解决了软件核心算法的实现问题。(4)提出了牵引计算软件功能设计方案,并进行了软件界面设计和数据库设计。使用本文所编制软件对唐山试验线进行牵引计算,通过计算结果与实验测试结果的比较,初步论证了软件的可行性与准确性。最后,对拟建中的北京S1线西段进行了牵引计算,得出的结果对线路设计优化具有借鉴价值。更多还原

【Abstract】 The low speed maglev train utilizes linear induction motor (LIM) as its traction system, thus the characteristics of the motors affect the performance of the traction; there are many differences between the low speed maglev train and the conventional wheel-rail train, so the“Traction Calculation Rules for Trains”does not support the calculation for the maglev train. Therefore, the work of calculating the characteristics of the LIM and developing a traction calculation software has a significant meaning. The main work is listed below:(1) For the disadvantages of the theoretical analysis method and the finite element method, in this thesis, the multi-layer theory is employed to establish the LIM model, and the model parameters are optimized using this model; the effectiveness and accuracy of theoretical calculation method are validated by a comparison of the calculation results and the experiments.(2) For the case of adding a layer with insulated materials into the composite materials of the secondary motor, the influences of the insulated layer on the secondary are analyzed, and the relationship among the thickness of insulated layer, the power factor, and the propulsive force is obtained. The influences on the performance of the LIM due to the lateral displacement between the primary and the secondary of the motor, which occurs when the vehicle is running, are discussed as well.(3) For the blank of traction calculation for the maglev train, a traction calculation model is established, which includes single particle maglev train model, motion equations, current and energy consumption calculations, and constraints. The characteristics of the traction strategies are analyzed. The flow charts of the algorithms using different traction strategies are presented, which solves the software implementation problems of the core algorithms.(4) A design scheme for the functions of the traction calculation software is presented, and the software interface and a database are designed. The traction of the low speed maglev vehicle in the Tangshan maglev test line is calculated using the calculation software developed in this dissertation; by comparison of the calculation result and the experimental result, the feasibility and the accuracy of the software are preliminarily validated. Finally, the west segment of the Beijing S1 route, which is to be constructed, is calculated using the software, and the result is of important significance for the optimization of the maglev routes.更多还原