afpma variables

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An Excel File listing the variables of a AFPMA

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Abbreviations UsedS/NDescriptionNotationValueUnits1Pole Arc to Pole Pitch Ratioai2Magnetic Flux Density on Magnet SurfaceBmgTesla T3Peak Value of Fundamental Component of airgap Flux DensityBpTesla T4Remanent Magnetic Flux DensityBrTesla T5Maximum Power CoefficientCpmax6Heat CoefficientCqw/cm^27Copper Diameterdcmm8Generator Inner DiameterDinmm9Generator Outer DiameterDoutmm10Electro Magnetic ForceEfVolts11Generator Nominal FreuqencyfnomHz12Mechanical Air Gapgmm13Coercive Field StrengthHcA/m14Permanent Magnet Thicknesshmmetres15Back Iron Thicknesshrmetres16Nominal AC CurrentIacamps17Maximum AC CurrentIacmaxamps18Maximum Current DensityJmaxa/mm^219Inner to Outer Radius Ratiokd20Coil Fill Factorkf21Saturation Factorksat22Active LengthLametres23Average Coil LengthLavgmetres24End Turn LengthLecmetres25Generator InductanceLsmH26Generator RPMn27Number of Turns per CoilNc28Nominal Generator RPMnnom29Number of Turns per PhaseNph30Pole PairPwatts31aerodynamic PowerPairwatts32Generator Nominal PowerPnomwatts33Ohmic Losses (Copper Losses)Pcuwatts34Copper Densitypcukg/m^335Number of Coils per Phaseq36Total Number of CoilsQ37Coil ResistanceRcOhms38Inner RadiusRinmetres39Outer RadiusRoutmetres40Wind Turbine RadiusRturbmetres41Copper Crosssectionscmm^242Permanent Magnet Surface AreaSPMm^243Stator Coil Axial Thicknesstwmetres44Wind Speedvwm/s45Coil Side Widthwcmetres46Permanent Magnet Widthwmmetres47Generator Efficiencyeff48Optimum Tip Speed Ratioopt49Vaccum Permeability0Wb/(A.m)50Recoil Permabilityrrec51Density of Air1.2kg/m^352Electrical Resistivity of CoppercuOhms-m53Maximum Magnetic FluxmaxWb54Electrical Speed in Electrical Radianserad

Variables

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