Investigation of Magnetic Gear System Based on the Use of Superconductor and Permanent Magnet

Magnetic gears claim to represent the latest technology in power transmission, offering many advantages over mechanical gear systems. Combined with superconductivity, these innovative structures have the potential to provide efficiency, low energy loss and good performance for industrial applications. This article examines the principles and applications of magnetic gears associated with the superconductivity. Magnetic gear works on the principle of utilizing magnetic fields between rotating elements to transmit mechanical force. Unlike traditional gear systems that rely on physical contact between gears, magnetic gears transmit torque through the interaction of magnetic forces. With the presence of superconductivity, stronger magnetic fields and lower energy losses can be achieved in magnetic gears. In this context, a superconducting magnetic gear system was examined for various configurations based on the finite element method using Comsol Multiphysics software. First of all, a standard magnetic gear was presented to establish benchmarking for the use of bulk superconductor in light of the experimental and theoretical analysis. Accordingly, the superconductor was incorporated into the stator layer to observe the Meissner effect in the gear mechanism. In addition, the superconducting model in the rotor layer of the magnetic gear was also introduced based on the magnetized bulk superconductor approach. Both results associated with the use of superconductor in the rotors and stator indicate that quantitative improvement can be achieved for the torque transfer performance in comparison with standard magnetic gear.