Study of HTS Magnetic Coupler Using Analytical and Numerical Computations

Lamia Belguerras (1) , Larbi Hadjout (2) , Smail Mezani (1) , Thierry Lubin (1) , Abderrezak Rezzoug (1)

1 GREEN - Groupe de Recherche en Electrotechnique et Electronique de Nancy
2 LSEI - Laboratoire des Systèmes Electriques et Industriels

In this paper, we propose a method to calculate the magnetic field in Flux Concentration Superconducting Magnetic Coupling (FCSMC) with rectangular permanent magnets (PMs). The inner rotor is composed of rectangular PMs and the external one is made of High Temperature Superconducting (HTS) coils supplied by DC current. Firstly, an exact 2-dimensional analytical computation is developed in polar coordinates for calculating the magnetic field distribution in FCSMC with sector PMs having the same volume as the rectangular ones. The model is validated by finite element computations. The analytical model is then used to predict the performances of FCSMC. The electric loadability of the FCSMC is determined by considering the dependence of the critical current vs. the flux density distribution. A parametric study showed that the analytical model can predict the torque with a reasonable precision. Therefore, this model can usefully be used for optimization purposes where reductions in computation time are needed.

Mots clés: Analytical solution; BSCCO tape; flux concentration; high temperature superconductors; magnetic coupler; permanent magnet

Domaines: Energie électrique; Electromagnétisme; Supraconductivité [cond-mat.supr-con]

Lamia Belguerras, Larbi Hadjout, Smail Mezani, Thierry Lubin, Abderrezak Rezzoug. Study of HTS Magnetic Coupler Using Analytical and Numerical Computations. IEEE Transactions on Applied Superconductivity, 2014, 14 p. ⟨10.1109/TASC.2014.2326923⟩. ⟨hal-01011510⟩