Innovative Hub Motor Architecture Featuring Dual Lamination Structure to Minimize Core Loss – For Electric Two Wheeler Application

Electric two-wheelers for low- to medium-speed applications often use hub motors for their compactness and direct-drive capability. Conventional designs with a laminated stator and solid rotor ring featuring surface-mounted magnets suffer from high core losses, increased rotor inertia, and poor thermal management, limiting torque and efficiency. This paper introduces a novel hub motor architecture inspired by PMSM principles, featuring both a laminated stator and a laminated rotor with embedded magnets. The stacks are assembled by the welding method and it reduces eddy current losses in the rotor. This design reduces core losses, lowers inertia, and improves heat dissipation, enhancing torque density and overall efficiency. Preliminary simulations indicate its potential as a next-generation solution for electric twowheeler hub motors.