Simulation model and simulation method for superconducting electric suspension system damper

Abstract

The invention provides a simulation model and a simulation method for a superconducting electric suspension system damper, and the simulation model comprises a simulation circuit and a damping coil equivalent load. The simulation circuit comprises a damping coil module, a control module and an inverter circuit. Wherein the damping coil module is used for providing a vertical speed to the control module; the vertical speed represents the speed of the damper in the vertical direction; the control module is used for generating a first switching signal according to the vertical speed so as to control the inverter circuit; the inverter circuit is used for outputting corresponding input current to the damping coil module and the damping coil equivalent load according to the first switching signal; the damping coil module is used for generating damping force according to the input current; and the damping coil equivalent load is used for simulating the electrical characteristics of the damper according to the input current. The simulation model can control the current flowing through the damping coil module in combination with a related control strategy, and support is provided for design of the active damper.

Description

technical field [0001] The invention relates to the field of maglev trains, in particular to a simulation model and a simulation method for a superconducting dynamic suspension system damper. Background technique [0002] The high-speed flying train adopts a superconducting electric suspension system, which is essentially a passive suspension system. The on-board superconducting magnet swipes the ground suspension coil, and the suspension coil generates an induced magnetic field due to the induced current. The magnetic field interacts with the magnetic field of the superconducting magnet to provide a suspension force and a guiding force for the train. When the speed is >150km / h, the wheel The rail is out of contact, so that it can break through the constraints of the traditional wheel-rail adhesion effect and meet the application requirements of high-speed flying trains at 1000km / h. [0003] During the actual operation of high-speed flying trains, the following external ...

AI Technical Summary

Problems solved by technology

However, superconducting electric suspension is also a kind of negative damping or critical damping system. Under the external excitation disturbance, the system is easy to diverge and cause suspension instability, and the influence of the above disturbance will be amplified when the train speed is 1000km / h, resulting in severe vibration of the car body or even Phenomena such as hitting the track

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