Static and Dynamic Modeling of the Electromagnets of the Maglev Vehicle Transrapid

Schmid, Patrick; Schneider, G.; Dignath, Florian; Liang, Xiaobin; Eberhard, Peter

doi:10.1109/tmag.2020.3039950

Cited by 23 publications

(33 citation statements)

References 20 publications

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“…The novel aspect of this contribution is the infinite elastic guideway formed by a repeating sequence of a few guideway elements combined with a detailed model of a complete Transrapid maglev vehicle consisting of three sections. Furthermore, this is the first complete vehicle model making use of the detailed magnet model from [12] and a model predictive control (MPC) scheme from [13], proving the usability of such kind of magnet models in combination with an MPC approach for the simulation of large maglev vehicle models. This novel model allows to investigate the differences in dynamics at the magnets at the front and rear end of the vehicle compared to the magnets in the middle.…”

Section: Introductionmentioning

confidence: 92%

Modeling and Simulation of a High-speed Maglev Vehicle on an Infinite Elastic Guideway

Schneider¹,

Schmid²,

Dignath³

et al. 2021

Proceedings of the 10th ECCOMAS Thematic Conference on MULTIBODY DYNAMICS

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For magnetic levitation transport systems with pillared tracks, detailed simulation models of the coupled system of vehicle and guideway offer a valuable contribution to find a tradeoff between stiff/heavy guideway elements, required to keep disturbances small for the controller, and low material consumption. This work provides a novel model of a detailed rigid multibody Transrapid maglev vehicle with three sections moving along an infinite periodically pillared elastic guideway mapping the two-dimensional heave-pitch motion of the vehicle and the elastic bending of the guideway elements. The infinite guideway is realized by moving system boundaries, i.e., the same few Euler-Bernoulli beams representing the current track segment are used repeatedly to form an infinite sequence of guideway elements. The equations of motion of the elastic beams and the rigid multibody vehicle are obtained from the multibody modeling and simulation toolbox Neweul-M 2 . A detailed magnet model in combination with a model predictive control scheme are used for the first time in a large maglev vehicle model in this contribution. All model components are combined and coupled in a Simulink model. Simulation results show more severe overshoots and oscillations of the guideway deflection below the vehicle the faster the vehicle passes, which is resulting in bigger control errors and magnet motions at the rear end of the vehicle compared to the vehicle mid and front. Therefore, in contrast to previous presumptions, the most critical situations are to be expected at the rear end magnet, not at the front end.

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Section: Introductionmentioning

confidence: 92%

Modeling and Simulation of a High-speed Maglev Vehicle on an Infinite Elastic Guideway

Schneider¹,

Schmid²,

Dignath³

et al. 2021

Proceedings of the 10th ECCOMAS Thematic Conference on MULTIBODY DYNAMICS

Self Cite

View full text Add to dashboard Cite

show abstract

“…In Figure 2, the stator with the three‐phase windings around the teeth and the rotor are shown. In [11] a detailed approach of modeling the magnets in a long stator motor is described. The modeling approach of the synchronous motor in this study is quite similar regarding the mathematical formulation and transformation of the differential equation, so details can be found there.…”

Section: Modelingmentioning

confidence: 99%

“…The reluctances

R_{Fe, St, i}

and

R_{Fe, R, i}

describe the flux per pole along the stator back and the iron rotor. The reluctance

R_{σ, i}

characterizes the loss across the stator teeth to the next winding and

R_{L, i}

the reluctance in the air gap 11 . The magnetic voltage sources

boldΘ = {MathClass-open[Θ_{1}, Θ_{2}, …, Θ_{24} MathClass-close]}^{T}

describe the magnetic voltages through the air gap.…”

Section: Modelingmentioning

confidence: 99%

“…Handling IDEs is not an easy task. Therefore, using a transformation presented in Schmid et al 11 this IDE is transformed into a differential algebraic equation (DAE)…”

Section: Modeling Of the Magnetic Circuitmentioning

confidence: 99%

“…The reluctance  R i , characterizes the loss across the stator teeth to the next winding and R L i , the reluctance in the air gap. 11 The magnetic voltage sources…”

Section: Modeling Of the Magnetic Circuitmentioning

confidence: 99%

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Simplified modeling of electromagnets for dynamic simulation of transient effects for a synchronous electric motor

Bechler

Kesten

Wittemann

et al. 2021

Int Journal of Mech Sys Dyn

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This study aims to show an approach for the dynamic simulation of a synchronous machine. The magnetic forces in the air gap are calculated efficiently using simplified approaches without neglecting important effects. For the modeling of the magnetic forces, an equivalent magnetic circuit is constructed in which the magnetic saturation and the leakage flux are taken into account and coupled with the electrical circuit at the end. The calculated magnetic forces are then passed to a mechanical model of the motor. Together with a predefinable load torque, the resulting motor rotation and the forces in the bearings are identified.The presented model is then investigated in a small example. This novel approach is intended to provide a method of calculating dynamically the forces transmitted from the shaft to the motor housing and to create the basis for evaluating electric motors for vibrations, noise, and harshness under varying loads and input voltages.

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System dynamics in structural strength and vibration fatigue life assessment of the swing bar for high‐speed maglev train

Guo

et al. 2022

Int Journal of Mech Sys Dyn

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High-speed maglev trains are subjected to severe dynamic loads, thus posing a failure hazard. It is necessary to account for the vehicle dynamics to improve the structural strength and fatigue life assessment approach under harsh routes and super highspeed grades. As the most critical load-carrying part between the vehicle body and levitation frames, the swing bar was taken as an example to demonstrate the significance of vehicle dynamics to integrate classical structural strength and fatigue life with the service conditions. A multiphysics-coupled dynamic model of an alpha improvement scheme for an electromagnetic suspension maglev train capable of 600 km/h was established to investigate the complex dynamic loads and fatigue spectra. Using this model, the structural strength and fatigue life of the wrought swing

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Static and Dynamic Modeling of the Electromagnets of the Maglev Vehicle Transrapid

Cited by 23 publications

References 20 publications

Modeling and Simulation of a High-speed Maglev Vehicle on an Infinite Elastic Guideway

Modeling and Simulation of a High-speed Maglev Vehicle on an Infinite Elastic Guideway

Simplified modeling of electromagnets for dynamic simulation of transient effects for a synchronous electric motor

System dynamics in structural strength and vibration fatigue life assessment of the swing bar for high‐speed maglev train

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