Numerical Simulation Of Levitation Force Of Non-ideal High Temperature Superconducting Maglev Orbit System

In recent years,due to the gradual maturity of magnetic levitation trains,the exploration of magnetic levitation has been continuously updated,and many researchers have continuously carried out research on the force between high-temperature superconductors and permanent magnets,which is the magnetic levitation force.At present,the research of suspension force is mostly concentrated in the part of experimental research.With the consumption and wear of materials,permanent magnets are not intact.There are relatively few researches on the levitation force of defected permanent magnets and non-ideal high-temperature superconducting magnetic levitation systems.For the non-ideal rectangular permanent magnet-superconducting levitation system,this paper conducts theoretical and simulation research on the magnetic field distribution of the non-ideal rectangular permanent magnet,and simulates the levitation force of the non-ideal high temperature superconducting maglev orbit system.The content and conclusion are as follows.First,the analytical expressions of the ideal single rectangular permanent magnet and the permanent magnet track are deduced and verified again.Simultaneously,the simulation software is used to establish a simulation model.Combining the simulation results,the main characteristics of the rectangular permanent magnet's magnetic field distribution are obtained.On this basis,a possible way to obtain a larger suspension force is proposed.The three-dimensional electromagnetic constitutive equation is deduced,and the calculation method of the magnetic levitation force of the system when moving vertically is obtained,and the reliability of the theory is verified by the combination with simulation software.Combined with theoretical derivation,a corresponding simulation model is established,and the magnetic field distribution law of an ideal rectangular permanent magnet is studied.At the same time,the theoretical model and the corresponding simulation model of the non-ideal rectangular permanent magnet are established,and the corresponding electromagnetic analysis is carried out on the surface defects and internal defects respectively,and the changing law of the magnetic field of the non-ideal single rectangular permanent magnet under different defects is obtained.According to the three-dimensional electromagnetic field control equation derived above,combined with experiments and simulations,the levitation force of the ideal HTS suspension system is calculated,and the simulation model of the non-ideal HTS suspension system is established to complete the suspension force for the non-ideal HTS suspension system According to the simulation calculation,the variation law of suspension force under different defects is obtained.The ideal high-temperature superconducting mangle orbit system was calculated through a combination of experiment and simulation,and the conclusion that the second type of permanent magnet orbit was better than the first type of permanent magnet orbit was obtained.At the same time,the accuracy of the model was verified by simulation software.On this basis,through the simulation calculation of two different non-ideal permanent magnet orbits and non-ideal high-temperature superconducting mangle orbit systems,the effects of different defects on the electromagnetic characteristics and magnetic levitation force of permanent magnets are obtained.The simulation results provide a theoretical reference value for the suspension performance of the suspension system,and at the same time provide a theoretical reference basis for the optimal design of the high-temperature superconducting suspension system.