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A novel structure of dual permanent magnet machine with PMs on both stator and rotor is presented as an effective option for high torque density direct-driven applications. The novel machine has PMs on both sides of rotor and stator. The PMs on the stator are designed as cylinder and can be rotated by an external driven system. Field can be regulated by the rotation of stator PMs. The structure and...
Magnetic gears promise the benefits of mechanical gears with added advantages from contactless power transfer. Although most literature focuses on minimizing the size of magnetic gears, their material costs must also be reduced to achieve economic feasibility. This work compares the active material costs of NdFeB and ferrite radial flux magnetic gears with surface permanent magnets through a parametric...
The vast majority of the existing literature on magnetic gears focuses primarily on radial flux topologies; however, axial flux magnetic gears (AFMG) offer a variety of unique advantages such as the potential for multi-stage designs and the ability to easily interface with hermetically isolated systems. This paper provides a comprehensive theoretical and 3D finite element simulation analysis of the...
In this paper, a multi-power-terminals permanent magnet (PM) machine with magnetic field modulation is proposed. The advantage of this new integrated configuration includes not only the characters of permanent magnet synchronous motor (PMSM), but also the features of the no-contact transmission permanent magnet gear. Its topology and operation principle are introduced. Some techniques are employed...
In this paper, a novel coaxial magnetic gear (CMG) using bulk high temperature superconductors (HTS) is proposed. By substituting bulk HTS for ferromagnetic material, a novel stationary ring is resulted, which can not only provide the desired field modulation effect but also suppress the end-effects that commonly occurred in the traditional CMG. The performance of the proposed bulk HTS CMG is assessed...
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