Superconducting electrodynamic suspension is a maglev transportation system for high-speed and ultra-high-speed oper-ation.After the design of the coil structure and electromagnetic parameters of the superconducting electrodynamic suspension system is finalized,the change patterns of the levitation force and guiding force cannot be adjusted by the onboard controller.Therefore,the size of the coil is very important.From an engineering perspective,the feasible design method for the electrodynamic suspension system was ex-pounded and analyzed in this study.Firstly,based on the dynamic circuit equation and virtual work principle,the peak value of the aver-age levitation force under a certain parameter condition was calculated.And the structure parameters of the levitation coil were obtained by conducting a process and cost analysis.Then,the relationship between the size of the"8"shaped coil and the superconducting magnet-ic poles was calculated,and the vertical offset when the vehicle weight was equal to the average levitation force was obtained,which was the steady-state working balance position of the levitation system.In addition,the influence pattern of the"8"shaped coil size on the peak value of average levitation force was determined:the half coil height exhibited an extremely large point for the peak value of the av-erage levitation force,and the winding width and coil thickness were monotonic increasing on the function of the peak value of the aver-age levitation force respectively,if other variables remain unchanged.Finally,the levitation system test was carried out on the supercon-ducting electrodynamic suspension test line of CRRC Changchun Railway Vehicles Co.,Ltd..The test results show that the difference be-tween the measured vertical average height of the vehicle and the calculated balance position is 0.56 mm,which have checked the accura-cy and effectiveness of the design method for the levitation system.
关键词
电动悬浮/悬浮系统/设计方法/试验线
Key words
electrodynamic suspension/levitation system/design method/test line
维普
万方数据