Optimization strategy of permanent magnet electrodynamic wheel for magnetic levitation car

To improve the basic performance of the magnetic levitation car, based on the current research situation of permanent magnet electrodynamic suspension (PMEDS), this paper propose a better annular structure of permanent magnet electrodynamic wheel (PMEDW) . In term of theoretical analysis, this paper analyzes the theoretical rationality of Halbach array magnetization varying by different magnetization angle, the number of permanent magnets in the monopole pair can be increased to increase the peripheral magnetic field intensity by optimizing the magnetization angle, a more concise analytical formula is derived by using the equivalent surface current method, and the structural relationship, magnetic field characteristics and eddy current distribution characteristics between the PMEDW and the conductor plate are obtained through analysis. In terms of 3D simulation optimization, different types of PMEDW were established in ANSYS Maxwell. The magnetic field, levitation force, propulsion force, levitation to weight ratio and levitation to propulsion ratio were compared respectively in simulation analysis and analytical calculation results to verify whether the new type of PMEDW is able to improve the function of levitation-propulsion integration simultaneously, the accuracy and reliability of the 3D electromagnetic simulation are verified from the perspectives of analytical calculation and experimental testing. The optimization scheme of Halbach array permanent magnet electric wheel will contribute to improve the basic performance of the magnetic levitation concept car, and provide a feasible technical choice for the formation of new green and environmentally friendly vehicles under the background of emission peak and carbon neutrality . © 2024 Harbin Institute of Technology. All rights reserved.