Submitted by tieole on Sat, 25/02/2023 - 16:15 Duration: 00:01:25Tabs 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)114.65 RPMn_cut_in RPM at the nominal wind speed (TSR)267.834 RPMn_nom Nominal tip speed ratio8.40998 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.188046 ai Inner-to-outer magnet radius0.862465 kd Flux density in airgap0.490548 TBmax Flux density on magnet surface0.643378 TBmg First harmonic of flux density in airgap0.211043 TBp Flux per pole (Calculated)0.000643538 WbFlux_pole Magnets on a rotor disk20 magnet_num Distance between magnets78.5029 mmdist_magnet_Rin Magnet mass3000 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet10000 mm3Vmag Volume of all magnets400000 mm3VolumeMagnet Remanent magnetic flux density1.265 TBr Magnetic coercivity982324 A/mHc Maximum Energy Product326 KJ/m³BHmax Outer diameter727.364 mmDout Average radius338.544 mmRavg Inner radius313.544 mmRin Outer radius363.682 mmRout Effective outer radius363.544 mmRout_eff Mass of rotor disks65.403 kgrBackIronMass Volume of rotor disks8310.42 cm3BackIronVolume Maximum flux density in the magnet rotor disk0.78533 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 phase5 q Total number of coils in stator15 coil_num Number of turns per coil79 Nc Copper wire diameter1.5 mmdc Number of wires at hand3 No_wires_at_hand Winding fill factor0.58 kf Copper wire cross-sectional area5.31 mm2sc Copper wire cross-sectional area (Calculated)5.16566 mm²sc_theor Copper wire cross-sectional area of a sinlge wire1.77 mm²sc_multi_wires Copper wire diameter (Calculated)2.56524 mmdc_theor Coil leg width55.6353 mmwc Average length of coil turn314.695 mmlavg Stator nominal temperature112.725 C°tc_real Stator surface area5252.44 cm²stator_surface_area Heat coefficient0.403371 cq_real Current density6.80973 AJmax_real Resistivity of copper at nominal temperature2.3073E-8 Ohm.mpt Resistance of a single coil0.108025 OhmRc Phase resistance0.540127 OhmRphase Phase inductance0.00282398 HLs Nagaoka constant0.118796 Kn Winding coefficient0.95 kw Volume of a single coil227606 mm3coil_volume Weight of a single coil1210.06 gcoil_weight_constr Coil hole at Ravg20 mmcoil_hole_Ravg Coil hole at Rin20 mmcoil_hole_Rin_constr Coil hole at Rout20 mmcoil_hole_Rout_constr Coil mass for construction19.3609 kgrmcu_constr EMF at the cut-in wind speed (Calculated)20.528 VEMF_cut_in EMF at the nominal wind speed (Calculated)47.869 VEMF_nom Current at the nominal wind speed36.1596 AIac_nom Terminal voltage at the nominal wind speed27.2851 VV_term_line Nominal frequency44.639 Hzfnom Generator power (Calculated)2959.86 WPnom Copper losses (Calculated)2118.68 WPcopper Eddy current losses (Calculated)38.2497 WPeddy Generator efficiency (Calculated)0.57044 efficiency_real AC Power at the rectifier (Calculated)2663.88 WPnom_rect DC Power at the batteries (Calculated)2397.49 WPnom_dc Generator Bearing Hub Outputs PropertyValueVariable name Number of bolts on hub6 No_bolts_hub Mass of bearing hub14290.7 gBearingHubMass Rotational losses (Calculated)71.9433 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost975.053 EURTotalcost Total generator mass92.9888 kgrTotalMass Total generator volume24.5157 dm3TotalVolume Blade rotor mass51.6121 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets283.955 EURMagcost Magnet shipping cost24.1546 EURshippingcost Copper mass17.7027 kgrmcu Cost of copper348.389 EURcoppercost Resin mass6.88309 kgrresinmass Cost of resin95.0754 EURresincost Resin volume5061.1 cm3ResinVolume Total mass of one generator rotor34.2015 kgrTotalMassRotor Cost of iron80.4457 EURironcost Surface area of moulds1.05548 m2woodS Total cost of moulds167.187 EURwoodcost Output files Octave/Matlab variable file: simulation-8132.mat Input parameters Blade Rotor Inputs Turbine radius: 3.00mAerodynamic coefficient: 0.30Cut-in wind speed: 4.00m/sNominal wind speed: 10.00m/sCut-in TSR: 9.00Design TSR: 6.00Air density: 1.225kg/m³ Generator Rotor Inputs AFPM rotor topology: Double RotorMagnetic material: NdFeB N40Number of generator poles: 20Magnet length: 50mmMagnet width: 20mmMagnet thickness: 10mmRotor disk thickness: User DefinedRotor disk thickness: 10mmMechanical clearance: 3.00mm Generator Stator Inputs Select coil type: RectangularWinding fill factor: User definedWinding fill factor: 0.58Stator thickness: User definedStator thickness: 13mmCurrent density: 7.00A/mm2 System Inputs System voltage: 48.00VNominal voltage: 58.00VTransmission cable losses: 10.00%Rectifier losses: 10.00% Financial Copper price: 16.00€/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