Abstract
In this paper, a new dual-rotor permanent magnet synchronous reluctance machine (PM-SynRM) with toroidal windings is proposed for high electromagnetic torque by fully utilizing the permanent magnet torque and reluctance torque through the special assembling angle design of two rotors. Both rotor, the surface-mounted PM rotor and the reluctance rotor, featuring robust rotor structure, contribute to one shaft output. To evaluate the contribution of the proposed machine, the finite element method (FEM) is utilized to analyze the machine characteristics and performance, including torque with assembling and current phase angles, torque and power density, efficiency, and torque ripple. Finally, the demagnetization analysis confirms that the proposed dual-rotor PM-SynRM have superior endurance against the magnet irreversible demagnetization within five times of the rated current excitation.
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