Abstract
Surface permanent magnet (SPM) motors are often used for high-speed motor applications because it is possible to increase their peripheral speed by preventing magnet scattering; however, it is difficult to utilize reluctance torque when using SPM motors. Thus, novel rotor structures for use in SPM motors are proposed in this study. The proposed SPM motor employs the shape freedom of bonded magnets to utilize reluctance torque, providing maximum magnet and reluctance torques at the same current phase. Finite element method modeling confirms that the proposed motor provides approximately 20% more peak torque than a base SPM design, even for an identical magnet volume and drive current. This motor could be used as the foundation for developing SPM motors for next-generation e-mobilities.
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