Modeling and Analysis of a Novel Guidance Magnet for High-Speed Maglev Train

Abstract

This paper proposes a novel guidance magnet with 7 magnet poles for application in high speed maglev train. Its configuration and working principle are introduced in detail. Mathematical models of the guidance force and moment are established accurately by equivalent magnetic circuit method (EMCM), from which the relationships of guidance force -control current -guidance gap and moment -current changeangular deflection are derived. Finite element method (FEM) is also applied to analyze the performances and characteristics of the novel guidance magnet. The analysis results are in good agreement with those calculated by EMCM, which is helpful in designing, optimizing and controlling the guidance system. The comparisons are carried out between the novel and conventional guidance magnets. The contrast results indicate that the proposed novel guidance magnet possesses better performances compared to the conventional structure, especially the superior guidance capability and lower power loss. Finally, the relationship of guidance forcecontrol current under the nominal guidance gap is validated by a test bench for magnet performance.

Development of new electromagnetic suspension–based high‐speed Maglev vehicles in China: Historical and recent progress in the field of dynamical simulation

“…Thereby, the simulation models scale from, for example, single magnet consideration 40 through multibody system models 41 to coupled mechatronic models of the whole vehicle, 34 customized in each case for the specific research question 42 . Parallel to the recent developments in China described in Section 1, studies on the Maglev vehicle system dynamics are increasing significantly 35,43–49 …”

“…42 Parallel to the recent developments in China described in Section 1, studies on the Maglev vehicle system dynamics are increasing significantly. 35,[43][44][45][46][47][48][49] The models referenced in Section 4 were created to a great extent using these toolboxes.…”

Modeling and Analysis of a Linear Generator for High Speed Maglev Train

“…The performance test bench of magnet shown in Fig. 15 is applied on the measurement of magnetic flux density [25]. Firstly, make sure the nominal magnetic gap 12.5mm through adjusting the stator of bench.…”

Modeling of Coupled Electric and Magnetic Circuits in Electromagnetic Suspension Vehicles

“…While these models are helpful for magnet design they tend to be too complex for usage in control applications, are computationally expensive and can lack interpretability. Many research groups use equivalent magnetic circuits (EMC) to model the force and flux relations [5], [6], [7]. However, the aforementioned EMC approaches neglect the material's saturation behavior and thus have a limited application range, which is a hindrance at higher loads and speeds.…”