Analysis of magnetic field characteristics for mechanical elastic electric wheel

This paper presents the development of a mechanical elastic electric wheel, which integrates an in-wheel motor with a non-pneumatic mechanical elastic wheel. The magnetic field characteristics of this innovative wheel are thoroughly analyzed through both theoretical examination and simulation testing. Initially, parametric design and modeling of the integrated permanent magnet synchronous in-wheel motor are conducted, taking into account the unique structure of the non-pneumatic mechanical elastic wheel. Subsequently, Maxwell finite element software is employed to simulate and investigate the magnetic field characteristics of the mechanical elastic wheel. The findings indicate that the magnetic field line distribution in the no-load condition forms a closed curve around the designed built-in permanent magnet synchronous motor, with no significant magnetic leakage, thereby fulfilling the design criteria for the wheel motor. The maximum magnetic density at the hub of the mechanical elastic electric wheel skeleton reaches 1.351e5 A/m, while the magnetic field strength varies at the hinge joint, aligning with the design specifications for the corresponding vehicle. This study holds practical significance for the commercial advancement of mechanical elastic electric wheels.