Submitted by Kostas on Thu, 20/10/2022 - 20:25 Duration: 00:00:36Tabs 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)139.331 RPMn_cut_in RPM at the nominal wind speed (TSR)257.715 RPMn_nom Nominal tip speed ratio4.85535 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.425758 ai Inner-to-outer magnet radius0.772762 kd Flux density in airgap0.578116 TBmax Flux density on magnet surface0.645245 TBmg First harmonic of flux density in airgap0.436543 TBp Flux per pole (Calculated)0.000894873 WbFlux_pole Magnets on a rotor disk16 magnet_num Distance between magnets31.4304 mmdist_magnet_Rin Magnet mass3312 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet13800 mm3Vmag Volume of all magnets441600 mm3VolumeMagnet Remanent magnetic flux density1.265 TBr Magnetic coercivity982324 A/mHc Maximum Energy Product326 KJ/m³BHmax Outer diameter405.973 mmDout Average radius179.431 mmRavg Inner radius156.431 mmRin Outer radius202.986 mmRout Effective outer radius202.431 mmRout_eff Mass of rotor disks20.3746 kgrBackIronMass Volume of rotor disks2588.89 cm3BackIronVolume Maximum flux density in the magnet rotor disk1.11445 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 coil73 Nc Copper wire diameter1.8 mmdc Number of wires at hand1 No_wires_at_hand Winding fill factor0.55 kf Copper wire cross-sectional area2.54 mm2sc Copper wire cross-sectional area (Calculated)2.50233 mm²sc_theor Copper wire cross-sectional area of a sinlge wire2.54 mm²sc_multi_wires Copper wire diameter (Calculated)1.78541 mmdc_theor Coil leg width25.9329 mmwc Average length of coil turn233.429 mmlavg Stator nominal temperature103.65 C°tc_real Stator surface area1452.84 cm²stator_surface_area Heat coefficient0.373283 cq_real Current density6.89618 AJmax_real Resistivity of copper at nominal temperature2.19555E-8 Ohm.mpt Resistance of a single coil0.147295 OhmRc Phase resistance0.589181 OhmRphase Phase inductance0.00163306 HLs Nagaoka constant0.18278 Kn Winding coefficient0.95 kw Volume of a single coil78695.4 mm3coil_volume Weight of a single coil397.546 gcoil_weight_constr Coil hole at Ravg30 mmcoil_hole_Ravg Coil hole at Rin30 mmcoil_hole_Rin_constr Coil hole at Rout30 mmcoil_hole_Rout_constr Coil mass for construction5.1681 kgrmcu_constr EMF at the cut-in wind speed (Calculated)20.528 VEMF_cut_in EMF at the nominal wind speed (Calculated)37.8783 VEMF_nom Current at the nominal wind speed17.5163 AIac_nom Terminal voltage at the nominal wind speed27.0499 VV_term_line Nominal frequency34.362 Hzfnom Generator power (Calculated)1421.44 WPnom Copper losses (Calculated)542.319 WPcopper Eddy current losses (Calculated)16.2644 WPeddy Generator efficiency (Calculated)0.709912 efficiency_real AC Power at the rectifier (Calculated)1279.3 WPnom_rect DC Power at the batteries (Calculated)1151.37 WPnom_dc Generator Bearing Hub Outputs PropertyValueVariable name Number of bolts on hub5 No_bolts_hub Mass of bearing hub8344.46 gBearingHubMass Rotational losses (Calculated)22.2559 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost522.457 EURTotalcost Total generator mass31.4074 kgrTotalMass Total generator volume7.63722 dm3TotalVolume Blade rotor mass11.1482 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets307.406 EURMagcost Magnet shipping cost26.6667 EURshippingcost Copper mass4.64334 kgrmcu Cost of copper68.5357 EURcoppercost Resin mass3.07748 kgrresinmass Cost of resin42.5089 EURresincost Resin volume2262.85 cm3ResinVolume Total mass of one generator rotor11.8433 kgrTotalMassRotor Cost of iron25.0607 EURironcost Surface area of moulds0.498397 m2woodS Total cost of moulds78.9461 EURwoodcost Output files Octave/Matlab variable file: simulation-7551.mat Input parameters Blade Rotor Inputs Turbine radius: 1.80mAerodynamic coefficient: 0.33Cut-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 N40Number of generator poles: 16Magnet length: 46mmMagnet width: 30mmMagnet 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: 0.55Stator thickness: User definedStator thickness: 13mmCurrent density: 7.00A/mm2 System Inputs System voltage: 48.00VNominal voltage: 57.50VTransmission 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
