Submitted by fromwastetowind on Thu, 27/02/2025 - 14:48 Duration: 00:00:38Tabs 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)159.236 RPMn_cut_in RPM at the nominal wind speed (TSR)340.878 RPMn_nom Nominal tip speed ratio3.56785 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.664434 ai Inner-to-outer magnet radius0.58614 kd Flux density in airgap0.181256 TBmax Flux density on magnet surface0.199217 TBmg First harmonic of flux density in airgap0.176904 TBp Flux per pole (Calculated)0.000486973 WbFlux_pole Magnets on a rotor disk12 magnet_num Distance between magnets4.4937 mmdist_magnet_Rin Magnet mass5184 gMagnetMass Magnet density5 g/cm3mag_density Volume of a single magnet43200 mm3Vmag Volume of all magnets1036800 mm3VolumeMagnet Remanent magnetic flux density0.39 TBr Magnetic coercivity227950 A/mHc Maximum Energy Product30 KJ/m³BHmax Outer diameter292.699 mmDout Average radius114.977 mmRavg Inner radius84.9766 mmRin Outer radius146.35 mmRout Effective outer radius144.977 mmRout_eff Mass of rotor disks10.591 kgrBackIronMass Volume of rotor disks1345.75 cm3BackIronVolume Maximum flux density in the magnet rotor disk0.520416 TSaturMAX Is the magnet rotor disk saturated?No Saturation Generator Stator Outputs PropertyValueVariable name Stator thickness18 mmtw Number of phases3 nphase Number of coils per phase3 q Total number of coils in stator9 coil_num Number of turns per coil296 Nc Copper wire diameter0.75 mmdc Number of wires at hand1 No_wires_at_hand Winding fill factor0.75 kf Copper wire cross-sectional area0.44 mm2sc Copper wire cross-sectional area (Calculated)0.418823 mm²sc_theor Copper wire cross-sectional area of a sinlge wire0.44 mm²sc_multi_wires Copper wire diameter (Calculated)0.730433 mmdc_theor Coil leg width9.64741 mmwc Average length of coil turn230.293 mmlavg Stator nominal temperature90.4688 C°tc_real Stator surface area399.911 cm²stator_surface_area Heat coefficient0.326974 cq_real Current density4.75935 AJmax_real Resistivity of copper at nominal temperature2.13852E-8 Ohm.mpt Resistance of a single coil3.31309 OhmRc Phase resistance9.93926 OhmRphase Phase inductance0.0230008 HLs Nagaoka constant0.296996 Kn Winding coefficient0.95 kw Volume of a single coil39991.1 mm3coil_volume Weight of a single coil269.952 gcoil_weight_constr Coil hole at Ravg40 mmcoil_hole_Ravg Coil hole at Rin40 mmcoil_hole_Rin_constr Coil hole at Rout40 mmcoil_hole_Rout_constr Coil mass for construction2.69952 kgrmcu_constr EMF at the cut-in wind speed (Calculated)29.0813 VEMF_cut_in EMF at the nominal wind speed (Calculated)62.1849 VEMF_nom Current at the nominal wind speed2.09412 AIac_nom Terminal voltage at the nominal wind speed39.5164 VV_term_line Nominal frequency34.0878 Hzfnom Generator power (Calculated)248.256 WPnom Copper losses (Calculated)130.761 WPcopper Eddy current losses (Calculated)0.299866 WPeddy Generator efficiency (Calculated)0.630812 efficiency_real AC Power at the rectifier (Calculated)223.43 WPnom_rect DC Power at the batteries (Calculated)201.087 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)14.2332 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost223.823 EURTotalcost Total generator mass20.8454 kgrTotalMass Total generator volume5.38299 dm3TotalVolume Blade rotor mass1.39353 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets82.8287 EURMagcost Magnet shipping cost62.6087 EURshippingcost Copper mass2.41326 kgrmcu Cost of copper35.6198 EURcoppercost Resin mass2.65716 kgrresinmass Cost of resin36.703 EURresincost Resin volume1953.79 cm3ResinVolume Total mass of one generator rotor7.88751 kgrTotalMassRotor Cost of iron13.027 EURironcost Surface area of moulds0.351293 m2woodS Total cost of moulds55.6447 EURwoodcost Output files Octave/Matlab variable file: simulation-9686.mat Input parameters Blade Rotor Inputs Turbine radius: 0.90mAerodynamic coefficient: 0.35Cut-in wind speed: 3.00m/sNominal wind speed: 9.00m/sCut-in TSR: 5.00Design TSR: 6.00Air density: 1.204kg/m³ Generator Rotor Inputs AFPM rotor topology: Double RotorMagnetic material: Ferrite C8Number of generator poles: 12Magnet length: 60mmMagnet width: 40mmMagnet thickness: 18mmRotor disk thickness: User DefinedRotor disk thickness: 10mmMechanical clearance: 3.00mm Generator Stator Inputs Select coil type: RectangularWinding fill factor: User definedWinding fill factor: 0.75Stator thickness: User definedStator thickness: 18mmCurrent density: 5.00A/mm2 System Inputs System voltage: 68.00VNominal voltage: 84.00VTransmission 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