IEEE Transactions on Magnetics · 2014 · 43 citations · 17 references
EngineeringElectrical EngineeringElectric MachinesFinite Element AnalysisFinite Element MethodsElectromagnetic Torque ProductionLosses In Electric MachinesMagnetic Circuit AnalysisMagnetic ComponentsOverhang DesignPermanent Magnet MachinesElectromagnetic DesignFinite Element Analysis Of MachinesFlux Distribution AnalysisFlux Leakage In Electrical MachinesLeakageLeakage FluxOverhang EffectsSurface Permanent Magnet Machines
This paper presents a magnetic field analysis of a surface-mounted permanent magnet machine with an overhang structure wherein the rotor axial length exceeds that of the stator. A 2-D analytic method using a lumped magnetic circuit model (LMCM) is proposed for more rapid computation of the overhang effect compared with a conventional 3-D or quasi-3-D finite element analysis (FEA). In the LMCM, the effective overhang length is calculated, and a leakage flux generated in the overhang region is estimated. The accuracy and usefulness of the proposed analytic method is confirmed through the 3-D FEA and the experimental results according to the diverse overhang length, the number of slot/pole, and stator core length.
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