Submitted by tieole on Sat, 25/02/2023 - 16:12 Duration: 00:01:27Tabs 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)309.818 RPMn_nom Nominal tip speed ratio9.72829 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.146117 ai Inner-to-outer magnet radius0.86615 kd Flux density in airgap0.490972 TBmax Flux density on magnet surface0.643668 TBmg First harmonic of flux density in airgap0.166798 TBp Flux per pole (Calculated)0.000643803 WbFlux_pole Magnets on a rotor disk16 magnet_num Distance between magnets107.059 mmdist_magnet_Rin Magnet mass2400 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet10000 mm3Vmag Volume of all magnets320000 mm3VolumeMagnet Remanent magnetic flux density1.265 TBr Magnetic coercivity982324 A/mHc Maximum Energy Product326 KJ/m³BHmax Outer diameter747.374 mmDout Average radius348.553 mmRavg Inner radius323.553 mmRin Outer radius373.687 mmRout Effective outer radius373.553 mmRout_eff Mass of rotor disks69.0512 kgrBackIronMass Volume of rotor disks8773.97 cm3BackIronVolume Maximum flux density in the magnet rotor disk0.782836 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 phase4 q Total number of coils in stator12 coil_num Number of turns per coil124 Nc Copper wire diameter1.7 mmdc Number of wires at hand2 No_wires_at_hand Winding fill factor0.58 kf Copper wire cross-sectional area4.54 mm2sc Copper wire cross-sectional area (Calculated)4.44357 mm²sc_theor Copper wire cross-sectional area of a sinlge wire2.27 mm²sc_multi_wires Copper wire diameter (Calculated)2.3792 mmdc_theor Coil leg width74.6631 mmwc Average length of coil turn374.442 mmlavg Stator nominal temperature109.975 C°tc_real Stator surface area6709.69 cm²stator_surface_area Heat coefficient0.394393 cq_real Current density6.85132 AJmax_real Resistivity of copper at nominal temperature2.22864E-8 Ohm.mpt Resistance of a single coil0.227924 OhmRc Phase resistance0.911696 OhmRphase Phase inductance0.00640833 HLs Nagaoka constant0.0966084 Kn Winding coefficient0.95 kw Volume of a single coil363441 mm3coil_volume Weight of a single coil1914.91 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 construction24.8939 kgrmcu_constr EMF at the cut-in wind speed (Calculated)20.528 VEMF_cut_in EMF at the nominal wind speed (Calculated)55.6478 VEMF_nom Current at the nominal wind speed31.105 AIac_nom Terminal voltage at the nominal wind speed27.2851 VV_term_line Nominal frequency41.3091 Hzfnom Generator power (Calculated)2546.11 WPnom Copper losses (Calculated)2646.25 WPcopper Eddy current losses (Calculated)19.6829 WPeddy Generator efficiency (Calculated)0.480656 efficiency_real AC Power at the rectifier (Calculated)2291.5 WPnom_rect DC Power at the batteries (Calculated)2062.35 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)85.1095 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost1035.28 EURTotalcost Total generator mass101.621 kgrTotalMass Total generator volume25.8832 dm3TotalVolume Blade rotor mass51.6121 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets227.164 EURMagcost Magnet shipping cost19.3237 EURshippingcost Copper mass22.6142 kgrmcu Cost of copper445.047 EURcoppercost Resin mass7.55579 kgrresinmass Cost of resin104.367 EURresincost Resin volume5555.73 cm3ResinVolume Total mass of one generator rotor35.7256 kgrTotalMassRotor Cost of iron84.9329 EURironcost Surface area of moulds1.09699 m2woodS Total cost of moulds173.764 EURwoodcost Output files Octave/Matlab variable file: simulation-8130.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: 16Magnet 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