The 13th International Symposium on Linear Drives for Industry Application (LDIA2021)

6 / 2021-06-18 14:22:07

The transient state analysis of changing step of long stator linear synchronous motor for maglev vehicle

LS-LSM， high speed maglev， change-step， mathematic model

Long stator linear synchronous motor（LS-LSM）
is used to drive high speed maglev train. Change-step is an
important operating mode of maglev vehicle. In order to
simulate the change-step process, this paper established a
simulation system for LS-LSM, the change of motor parameters
during the process of step changing is introduced into the
mathematical model of LS-LSM to approach the real condition.
On this basis, this paper proposed an optimal time to switch
current and a method of thrust compensation to reduce the
thrust loss. Finally, the correctness of the theoretical analysis is verified by simulation results.