Abstract
This paper proposes a new self-decelerating permanent magnet (SDPM) wheel motor for Electric Vehicles (EVs). SDPM can be utilized for direct-driving areas by the advantages of the high torque density and high efficiency. In this paper, the key is the halbach array is not traditional and can be optimized, it can offer higher effective harmonic components of the magnetic field as well as the pull-out torque than the radial magnetized self-decelerating permanent-magnet (RSDPM) motor. In addition, the adoption of halbach arrays can reduce the flux density of the rotor yoke, the Iron losses can be reduced too. The magnetic field distributions and steady-state characteristics of these two topologies are compared by using the finite element method (FEM). The comparative analysis results shows that the new SDPM motor is particularly suitable for direct driving wheel motor in EVs.
Published Version
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