摘要
为了保障高速列车的制动安全,需要改进现有磁轨制动器来增加制动力。首先,基于电磁场理论和气隙结构的变化推导出电磁吸力的计算公式,得到电磁吸力的影响因素并对其进行优化;再采用三维软件CATIA建立优化后的模型;然后,采用有限元软件Ansoft Maxwell对优化后的模型进行电磁场仿真;最后,把优化后制动力的公式计算结果、仿真结果和原有制动力大小进行比较。结果表明:磁轨制动器采用极靴向外扩展、多组低压励磁线圈并联和纵向励磁回路(钢轨的纵向)等优化以后,制动力可以提高约40%,从而验证了优化模型的合理性,为磁轨制动器的电磁场分析和优化提供了参考依据。
To ensure the braking safety of high speed train, the existing electromagnetic track brake should be improved to increase the braking force. First of all, based on the electromagnetic field theo- ry and the change of gap structure,we derived the formula of electromagnetic suction, optimized fac- tors which influenced the electromagnetic suction and used CATIA to establish the optimal model. Then, the Ansoft Maxwell was used to simulate the 3D model of electromagnetic field, and analyzed the simulation results. Finally, the calculated results and the simulation results were compared with the original braking parameters. The result shows that the optimal electromagnetic track brake which has outward expansion pole shoes, low voltage exciter coils and vertical excitation circuit can increase nearly 40% of braking force, This verifies the rationality of the optimization model, and provides the reference for the electromagnetic field analysis and optimization of electromagnetic track brake.
出处
《重庆理工大学学报（自然科学）》
CAS
2014年第6期19-24,37,共7页
Journal of Chongqing University of Technology：Natural Science
关键词
高速列车
磁轨制动器
有限元仿真
优化
high speed train
electromagnetic track brake
finite element analysis
optimization
