Superconducting magnetic bearings simulation using an H-formulation finite element model

  title={Superconducting magnetic bearings simulation using an H-formulation finite element model},
  author={Lo{\"i}c Qu{\'e}val and Kun Liu and Wenjiao Yang and V{\'i}ctor M R Zerme{\~n}o and Guangtong Ma},
  journal={Superconductor Science and Technology},
The modeling of superconducting magnetic bearings (SMBs) is of great significance for predicting and optimizing their levitation performance before construction. Although much effort has been made in this area, there still remains some space for improvements. Thus the goal of this work is to report a flexible, fast and trustworthy H-formulation finite element model. First the methodology for modeling and calibrating both bulk-type and stack-type SMBs is summarized. Then its effectiveness for… 
Numerical Studies of Dynamic Characteristics of a Stack-Type HTS Maglev System Based on H-Formulation
High temperature superconducting (HTS) magnetic levitation (maglev) is a promising technology for future high-speed transit systems. Superconducting magnetic bearings are made of a permanent magnet
Numerical Simulations on the Vertical Dynamic Characteristics of High-Temperature Superconducting Bulk
High-temperature superconducting (HTS) maglev, owing to its unique self-stability characteristic, has a wide range of application prospect in flywheel energy storage, magnetic levitation bearing,
A new benchmark problem for electromagnetic modelling of superconductors: the high-T c superconducting dynamo
The high-T c superconducting (HTS) dynamo is a promising device that can inject large DC supercurrents into a closed superconducting circuit. This is particularly attractive to energise HTS coils in
Comparison of Linear Superconducting Magnetic Bearings Using Isotropic and Anisotropic Materials
Critical current density anisotropy is a common property of high-temperature superconducting materials. We clarify here how it could impact the performances of superconducting magnetic bearings by
Efficient Modeling of High-Temperature Superconductors Surrounded by Magnetic Components Using a Reduced H–$\phi$ Formulation
Although the H-formulation has proven to be one of the most versatile formulations used to accurately model superconductors in the finite element method, the use of vector-dependent variables in
Simulation and Experiment Research on the Dynamic Levitation Force of Bulk Superconductors Under a Varying External Magnetic Field
In practical high-temperature superconducting (HTS) maglev systems, it was found that the levitation force of the onboard bulk superconductors may attenuate gradually under the inhomogeneous magnetic
A reconstructed three-dimensional HTS bulk electromagnetic model considering J c spatial inhomogeneity and its implementation in a bulks’ combination system
High-temperature superconducting (HTS) bulks in HTS Maglev systems are always arrayed in a combination to make full use of the applied magnetic field of the permanent magnet guideway (PMG). An
Dynamic Characteristics of a Linear Superconducting Magnetic Bearing Under Pulsed and Harmonic Excitations
The linear superconducting magnetic bearing (SMB) discussed in this article consists of a high-temperature superconducting bulk of YBaCuO and a permanent magnet rail to provide the excitation
Effect Laws of Different Factors on Levitation Characteristics of High-Tc Superconducting Maglev System with Numerical Solutions
The interaction between the high-temperature superconducting (HTS) bulk and permanent magnet guideway (PMG) has been a topic among the existing HTS magnetic levitation systems. Up to now, the


H-formulation for simulating levitation forces acting on HTS bulks and stacks of 2G coated conductors
Several techniques to model high temperature superconductors (HTSs) are used throughout the world. At the same time, the use of superconductors in transportation and magnetic bearings promises an
Simulations and Tests of Superconducting Linear Bearings for a MAGLEV Prototype
The complex microstructure of melt grown YBCO bulk material and the non-linear electromagnetic behavior makes it difficult to determine their thermal, electrical and magnetic properties. The
3-D Transient Modeling of Bulk High-Temperature Superconducting Material in Passive Magnetic Bearing Applications
Bulk high-temperature superconductors are being considered for use in several engineering applications, including passive magnetic bearings. These bearings, apart from being passive, i.e., inherently
Experiment and simulation of superconducting magnetic levitation with REBCO coated conductor stacks
Three superconducting stacks made of 120 REBCO coated conductor tapes were each fabricated and assembled to obtain several REBCO modules. Their levitation responses over two different permanent
Dynamic Performance of Lumped Parameter Model for Superconducting Levitation
This paper presents modeling and validation testing of the 3-D lumped parameter translational model, which describes the dynamics of a levitated permanent magnet over an array of bulk
Optimization of the Superconducting Linear Magnetic Bearing of a Maglev Vehicle
A 3D finite element model to simulate superconducting linear magnetic bearings is developed and validated and the 3D model is reduced to a 2D model in order to decrease the computing time.
3D modeling of high-Tc superconductors by finite element software
A three-dimensional (3D) numerical model is proposed to solve the electromagnetic problems involving transport current and background field of a high-Tc superconducting (HTS) system. The model is
3D-Modeling Numerical Solutions of Electromagnetic Behavior of HTSC Bulk above Permanent Magnetic Guideway
This paper presents a 3D-modeling numerical method using finite element method (FEM) to simulate the electromagnetic behavior of high-temperature superconductors (HTSC). The models are formulated by
Numerical models for AC loss calculation in large-scale applications of HTS coated conductors
Two different models for simulating realistic HTS devices composed of a large number of tapes are developed and compared: the homogenized model simulates the coil using an equivalent anisotropic homogeneous bulk with specifically developed current constraints to account for the fact that each turn carries the same current.
Considerations on the Finite-Element Simulation of High-Temperature Superconductors for Magnetic Levitation Purposes
  • G. Ma
  • Physics
    IEEE Transactions on Applied Superconductivity
  • 2013
A robust and fast numerical course for investigating the magnetic levitation (maglev) performance of high-temperature superconductors (HTSs) is proposed and implemented via finite-element methods