Optimization and Design of the Permanent Magnet Guideway With the High Temperature Superconductor

Song, Honghai; Zheng, Jun; Liu, Minxian; Zhang, L.; Lu, Yao; Huang, Yin; Deng, Zigang; Zhang, Jianghua; Jing, Hua; Wang, Suyu; Wang, Jiasu

doi:10.1109/tasc.2006.871307

Cited by 26 publications

(12 citation statements)

References 8 publications

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“…The world's first poeple carrying HTS Maglev vehicle adopted a singlepeak PMG, which was composed of two permanent magnets (PMs) with opposite magnetization directions and iron plates. A series of size optimization studies were then carried out [10]. The HTS maglev system in Germany used a similar PMG [7].…”

Section: Introductionmentioning

confidence: 99%

Optimization study of the Halbach permanent magnetic guideway for high temperature superconducting magnetic levitation

Deng

Zhang

Cui

et al. 2020

Supercond. Sci. Technol.

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Due to the combined advantages of no-contact friction and self-stable levitation, high temperature superconducting magnetic levitation (HTS Maglev) has significant potential for rail transit applications. In order to further improve the carrying capacity of the HTS maglev system, it is necessary to optimize the permanent magnet guideway (PMG). In this paper, the original Halbach PMG was optimized and a new PMG with better performance was designed and manufactured. The magnetic field and magnetic forces were calculated by the finite element method, and the size and magnetization direction of each PM in the PMG were optimized. Then, the magnetic field above the optimized PMG were measured and compared with the original Halbach PMG as well as the levitation and guidance force of the bulk high temperature superconductors. Experimental data show that the magnetic field above the optimized PMG is effectively enhanced and the levitation and guidance force of the superconductors increase by 12.2% and 11.3%, respectively. This study can provide the foundation for the further optimization of PMGs and the research of large load HTS Maglev technology.

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Section: Introductionmentioning

confidence: 99%

Optimization study of the Halbach permanent magnetic guideway for high temperature superconducting magnetic levitation

Deng

Zhang

Cui

et al. 2020

Supercond. Sci. Technol.

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“…Therefore, it is necessary to optimize the design of the PMG of the HTS maglev vehicle system. In previous studies, many methods have been used to calculate the magnetic field distribution of PMG [17][18][19]. In order to simulate the aerodynamic resistance of high temperature superconductor maglev ETT in the future, finite element method (FEM) is used to calculate the magnetic field distribution in this paper.…”

Section: Numerical Calculation Of the Pmgmentioning

confidence: 99%

Design consideration of a super-high speed high temperature superconductor maglev evacuated tube transport (I)

Jiang

Bai

et al. 2012

J. Mod. Transport.

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The super-high speed high temperature superconductor (HTS) maglev evacuated tube transport (ETT) is a promising transport mode for the future. As a key component of the HTS maglev vehicle, the permanent magnet guideways (PMGs) with different geometrical configurations and iron yoke widths are analyzed by finite element method (FEM). The levitation force of a single onboard HTS maglev device over the designed PMG at different field cooling heights (FCH) is measured by magnetic levitation measurement system. Based on the designed PMG and experimental results, a preliminary scheme of subterranean super-high speed HTS maglev ETT is described in this paper. The HTS maglev ETT is mainly composed of an evacuated tube, HTS maglev vehicle, PMG, propulsion system, station, emergency rescue system, etc. In addition, a subterranean tube that consists of foundation tube and vacuum airproof layer is introduced. In order to convert the stress caused by the air pressure difference between inside and outside of the vehicle, a multi-circular vehicle body is designed. The vehicle is driven by a linear motor propulsion system under the control of a ground controlling system. The scheme of long-distance super-high speed passenger transportation is accomplished by the connection of different vehicles.

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“…(vii) We consider that the PMs have a magnetization M PM = 7.95 × 10 5 A m −1 , which corresponds to μ 0 M PM = 1 T, and are separated a distance d PM = 0.05 m. The SC has a critical current density J c = H 0 /0.075 [31], where H 0 is the magnetic field created by a single PM, of crosssectional dimensions 0.05 × 0.05 m 2 , at the center of its surface perpendicular to the magnetization. The vertical working distance is d = 0.025 m, and, in the FC case, the cooling height is d FC = 0.05 m. These quantities, as well as the parameters that will remain fixed in the following sections, are the same as those used in our previous works [13,26], and they are chosen from those found in typical values used in experiments and other theoretical works [10,14]. Thus, the results obtained in this paper will complement our previous works and can also be compared with results from other theoretical and experimental works.…”

Section: Modelingmentioning

confidence: 99%

“…A large number of works, both theoretical and experimental, have studied the change of levitation and guidance forces when one of the components of the levitating system is modified. On the one hand, studies can be found where different types of guideways are used, by changing the orientation or size of the permanent magnets [8][9][10][11][12][13][14][15][16]. On the other hand, there are also studies in which the superconducting part is changed, by modifying the dimensions or arrangements of the bulks [11,[16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

A theoretical study of the influence of superconductor and magnet dimensions on the levitation force and stability of maglev systems

Del-Valle

Sanchez

Navau

et al. 2008

Supercond. Sci. Technol.

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The levitation force and stability of superconducting levitation devices are strongly dependent on both the geometry and dimensions of the components and the cooling process of the superconductor. In this work we study these effects in levitating systems consisting of an infinitely long superconductor and a guideway of different arrangements of infinitely long parallel permanent magnets. Using a model based on the critical-state model and a magnetic-energy minimization procedure, taking into account the demagnetization fields, we analyze the influence of parameters of the system such as the width and height of the superconductor and those of the permanent magnets on the levitation force and stability for two different cooling processes, field cooling and zero-field cooling. The theoretical predictions are compared with existing experimental data. From the results obtained, we provide some general trends on how the dimensions of the components of maglev systems could be chosen to improve both the levitation force and the stability.

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Optimization and Design of the Permanent Magnet Guideway With the High Temperature Superconductor

Cited by 26 publications

References 8 publications

Optimization study of the Halbach permanent magnetic guideway for high temperature superconducting magnetic levitation

Optimization study of the Halbach permanent magnetic guideway for high temperature superconducting magnetic levitation

Design consideration of a super-high speed high temperature superconductor maglev evacuated tube transport (I)

A theoretical study of the influence of superconductor and magnet dimensions on the levitation force and stability of maglev systems

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