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高温超导磁悬浮以其独特的自稳定优势被认为是未来超高速地面交通以及电磁发射理想的悬浮方式之一。通过对各类直线电机的比较,提出了以动磁式无刷直流直线电机作为高温超导磁悬浮车/发射驱动系统的执行元件,利用有限元分析软件,通过对磁钢阵列、电机极距、磁钢厚度等研究,给出了磁钢的排放结构以及驱动电机的优化参数,随后研究不同电机极数以及初级线圈占空比下电机的推力波动情况,给出能满足系统推力要求的电机参数。对电机推力与气隙的变化关系以及驱动电机对系统悬浮性能的影响研究表明,电机适合于大气隙运行并对系统的悬浮性能影响较低。
Due to its unique self-stability advantage, HTS magnetic suspension is considered as one of the ideal suspension methods for ultra-high speed ground transportation and electromagnetic launch in the future. Based on the comparison of various linear motors, the paper presents the implementation of the magnetomotive brushless DC linear motor as a high temperature superconducting magnetic suspension / launch drive system. By using the finite element analysis software, Magnet thickness and other studies, the structure of the magnet and the optimal parameters of the drive motor are given. Then the different motor poles and the thrust fluctuation of the motor under the primary coil duty cycle are studied, and the motor parameters that can meet the thrust requirements of the system are given . The relationship between the thrust of the motor and the air gap and the influence of the driving motor on the suspension performance of the system show that the motor is suitable for the air gap operation and has a low impact on the suspension performance of the system.