IEEE Transactions on Industry Applications · 2013 · 95 citations · 12 references
EngineeringElectrical EngineeringElectric MachinesFinite Element AnalysisFinite Element MethodsBrushless Dc MachinesElectric MotorsElectromagnetic Torque ProductionLosses In Electric MachinesMagnetic Circuit AnalysisPermanent Magnet MachinesEddy Current AnalysisEddy Current LossesEnd EffectsIron LossesMagnet Loss AnalysisPermanent Magnet LossesPermanent Magnet Synchronous MachinesPermanent Magnet Synchronous Motors
The proposed hybrid method combines computationally efficient finite-element analysis (CE-FEA) with a new analytical formulation for eddy-current losses in the permanent magnets (PMs) of sine-wave current-regulated brushless synchronous motors. The CE-FEA only employs a reduced set of magnetostatic solutions yielding substantial reductions in the computational time, as compared with the conventional FEA. The 3-D end effects and the effect of pulsewidth-modulation switching harmonics are incorporated in the analytical calculations. The algorithms are applied to two fractional-slot concentrated-winding interior PM motors with different circumferential and axial PM block segmentation arrangements. The method is validated against 2-D and 3-D time-stepping FEA.
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