IEEE Transactions on Applied Superconductivity · 2020 · 20 citations · 10 references
EngineeringElectrical EngineeringMechanical EngineeringElectromagneticsMachine DesignMagnetic MaterialsElectromagnetic Torque ProductionMachine WindingsMagnetic Circuit AnalysisMagnetic ComponentsPermanent Magnet MachinesPermanent MagnetsAir Gap AnalysisAir-gap Magnetic Field AnalysisElectromagnetic DesignGearing SystemsMagnetic GearsRotor Topology DesignTorqueTorque Output
In order to improve the output torque and transmission stability of coaxial magnetic gear (CMG), a novel CMG with unequal Halbach arrays of the inner rotor and non-uniform air gap is proposed in this paper. According to the principle of magnetic field modulation and “one-sided flux” structures, the unequal Halbach arrays could augment the magnetic field in the inner air gap. Moreover, the permanent magnets (PMs) of the eccentric structure could obtain non-uniform air gap, which is helpful to enhance the flux-modulation effect. The proposed CMG topology with 4 inner and 17 outer pole pairs is established. The topology performance is assessed and calculated by finite element analysis (FEA).
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