Equivalent inductance model for the design analysis of electrodynamic suspension coils for hyperloop

Abstract

Hyperloop is a new concept of ground transportation. In Hyperloop, travelling occurs in near-vacuum tubes under 0.001 atm at a subsonic speed of up to 1200 km/h. During acceleration to and driving at a subsonic speed, magnetic levitation is employed. Thus far, various levitation technologies in existing high-speed maglev trains have been considered. Among those technologies, superconducting (SC) electrodynamic suspension (EDS) is a highly effective levitation system for Hyperloop owing to its advantages of a large levitation gap, levitation stability, and control being unnecessary. However, analyzing an EDS system requires the electromagnetic transient analysis of complex three-dimensional (3D) features, and its computational load generally limits the use of numerical methods, such as the 3D finite element method (FEM) or dynamic circuit theory. In this study, a novel model that can rapidly and accurately calculate the frequency-dependent equivalent inductance was developed. The developed model was then applied to design an EDS system using the decoupled resistance-inductance equations of levitation coils. Next, levitation coils of SC-EDS were designed and analyzed for use in Hyperloop. The obtained results were compared with the FEM results to validate the developed model. In addition, the model was experimentally validated by measuring currents induced by moving pods.

Design and optimization of nine degrees of freedom suspension model for hyperloop pods

“…Electromagnetic suspension system (EMS) and Electrodynamic suspension system (EDS) are two of such systems, which are ascertained as suitable for Hyperloop design. [6][7][8][9][10] Extensive research has been reported to make these compatible with the Hyperloop environment. The EMS uses magnetic effects to maintain a levitation gap.…”

Recurrent neural network based high-precision position compensation control of magnetic levitation system

“…Benefiting from its superiority of the contactless, frictionless, and noiseless, magnetic levitation system has been successfully applied to many fields 1 , 2 , such as high-speed maglev trains 3 , maglev wind turbines 4 , and frictionless magnetic bearings 5 . With the open-loop unstable and inherent nonlinear characteristics, it is a constant challenge to design the high-performance control scheme for position control of the magnetic levitation system 6 , 7 .…”