Submitted by morganmccaughey on Sat, 13/03/2021 - 17:23 Duration: 00:01:46Tabs Results Flux density in airgap plotFlux density on magnet surface plotFlux density in the magnet rotor disk Blade Rotor Outputs PropertyValueVariable name RPM at the cut-in wind speed (TSR)208.997 RPMn_cut_in RPM at the nominal wind speed (TSR)1026.75 RPMn_nom Nominal tip speed ratio12.896 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.0789747 ai Inner-to-outer magnet radius0.856091 kd Flux density in airgap0.315729 TBmax Flux density on magnet surface0.664076 TBmg First harmonic of flux density in airgap0.092858 TBp Flux per pole (Calculated)0.000166072 WbFlux_pole Magnets on a rotor disk8 magnet_num Distance between magnets106.805 mmdist_magnet_Rin Magnet mass300 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet2500 mm3Vmag Volume of all magnets40000 mm3VolumeMagnet Remanent magnetic flux density1.3 TBr Magnetic coercivity1006580 A/mHc Maximum Energy Product342 KJ/m³BHmax Outer diameter347.586 mmDout Average radius161.221 mmRavg Inner radius148.721 mmRin Outer radius173.793 mmRout Effective outer radius173.721 mmRout_eff Mass of rotor disks14.9355 kgrBackIronMass Volume of rotor disks1897.78 cm3BackIronVolume Maximum flux density in the magnet rotor disk0.446251 TSaturMAX Is the magnet rotor disk saturated?No Saturation Generator Stator Outputs PropertyValueVariable name Stator thickness13 mmtw Number of phases3 nphase Number of coils per phase2 q Total number of coils in stator6 coil_num Number of turns per coil526 Nc Copper wire diameter1.12 mmdc Number of wires at hand1 No_wires_at_hand Winding fill factor0.55 kf Copper wire cross-sectional area0.99 mm2sc Copper wire cross-sectional area (Calculated)0.899252 mm²sc_theor Copper wire cross-sectional area of a sinlge wire0.99 mm²sc_multi_wires Copper wire diameter (Calculated)1.0703 mmdc_theor Coil leg width72.8308 mmwc Average length of coil turn298.689 mmlavg Stator nominal temperature62.0321 C°tc_real Stator surface area2610.45 cm²stator_surface_area Heat coefficient0.212749 cq_real Current density5.45001 AJmax_real Resistivity of copper at nominal temperature2.00353E-8 Ohm.mpt Resistance of a single coil3.17955 OhmRc Phase resistance6.35909 OhmRphase Phase inductance0.0400269 HLs Nagaoka constant0.105404 Kn Winding coefficient0.95 kw Volume of a single coil282798 mm3coil_volume Weight of a single coil1395.81 gcoil_weight_constr Coil hole at Ravg10 mmcoil_hole_Ravg Coil hole at Rin10 mmcoil_hole_Rin_constr Coil hole at Rout10 mmcoil_hole_Rout_constr Coil mass for construction9.77065 kgrmcu_constr EMF at the cut-in wind speed (Calculated)10.264 VEMF_cut_in EMF at the nominal wind speed (Calculated)50.4494 VEMF_nom Current at the nominal wind speed5.39551 AIac_nom Terminal voltage at the nominal wind speed11.2904 VV_term_line Nominal frequency68.4502 Hzfnom Generator power (Calculated)182.753 WPnom Copper losses (Calculated)555.369 WPcopper Eddy current losses (Calculated)0.809192 WPeddy Generator efficiency (Calculated)0.23292 efficiency_real AC Power at the rectifier (Calculated)164.477 WPnom_rect DC Power at the batteries (Calculated)148.03 WPnom_dc Generator Bearing Hub Outputs PropertyValueVariable name Number of bolts on hub4 No_bolts_hub Mass of bearing hub3708.65 gBearingHubMass Rotational losses (Calculated)45.685 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost280.782 EURTotalcost Total generator mass26.265 kgrTotalMass Total generator volume5.59844 dm3TotalVolume Blade rotor mass3.30317 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets35.7315 EURMagcost Magnet shipping cost2.41546 EURshippingcost Copper mass8.34312 kgrmcu Cost of copper123.144 EURcoppercost Resin mass2.68642 kgrresinmass Cost of resin37.1073 EURresincost Resin volume1975.31 cm3ResinVolume Total mass of one generator rotor7.61775 kgrTotalMassRotor Cost of iron18.3707 EURironcost Surface area of moulds0.419368 m2woodS Total cost of moulds66.4279 EURwoodcost Output files Octave/Matlab variable file: simulation-6982.mat Input parameters Blade Rotor Inputs Turbine radius: 1.20mAerodynamic coefficient: 0.30Cut-in wind speed: 3.00m/sNominal wind speed: 10.00m/sCut-in TSR: 8.75Design TSR: 7.00Air density: 1.204kg/m³ Generator Rotor Inputs AFPM rotor topology: Double RotorMagnetic material: NdFeB N42Number of generator poles: 8Magnet length: 25mmMagnet width: 10mmMagnet thickness: 10mmRotor disk thickness: CalculatedMechanical clearance: 3.00mm Generator Stator Inputs Select coil type: RectangularWinding fill factor: User definedWinding fill factor: 0.55Stator thickness: User definedStator thickness: 13mmCurrent density: 6.00A/mm2 System Inputs System voltage: 24.00VNominal voltage: 24.00VTransmission cable losses: 10.00%Rectifier losses: 10.00% Financial Copper price: 12.00€/kgIron price: 1.00€/kgResin price: 11.23€/kgPlywood price: 17.60 €/m² Simulation Inputs Also run UserAFPM: false Constants Copper resistivity: 1.678E-8 Ω·mCopper density: 8.94g/cm³Iron density: 7.87g/cm³Resin density: 1.36g/cm³