Submitted by morganmccaughey on Tue, 02/03/2021 - 11:11 Duration: 00:00:48Tabs 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)302.468 RPMn_nom Nominal tip speed ratio3.799 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.501949 ai Inner-to-outer magnet radius0.664592 kd Flux density in airgap0.536551 TBmax Flux density on magnet surface0.621595 TBmg First harmonic of flux density in airgap0.455637 TBp Flux per pole (Calculated)0.000867621 WbFlux_pole Magnets on a rotor disk12 magnet_num Distance between magnets17.7242 mmdist_magnet_Rin Magnet mass2484 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet13800 mm3Vmag Volume of all magnets331200 mm3VolumeMagnet Remanent magnetic flux density1.265 TBr Magnetic coercivity982324 A/mHc Maximum Energy Product326 KJ/m³BHmax Outer diameter275.929 mmDout Average radius114.147 mmRavg Inner radius91.1465 mmRin Outer radius137.964 mmRout Effective outer radius137.146 mmRout_eff Mass of rotor disks9.41214 kgrBackIronMass Volume of rotor disks1195.95 cm3BackIronVolume Maximum flux density in the magnet rotor disk1.08406 TSaturMAX Is the magnet rotor disk saturated?No Saturation Generator Stator Outputs PropertyValueVariable name Stator thickness15 mmtw Number of phases3 nphase Number of coils per phase3 q Total number of coils in stator9 coil_num Number of turns per coil45 Nc Copper wire diameter1.4 mmdc Number of wires at hand2 No_wires_at_hand Winding fill factor0.55 kf Copper wire cross-sectional area3.08 mm2sc Copper wire cross-sectional area (Calculated)3.03547 mm²sc_theor Copper wire cross-sectional area of a sinlge wire1.54 mm²sc_multi_wires Copper wire diameter (Calculated)1.96643 mmdc_theor Coil leg width16.8 mmwc Average length of coil turn204.752 mmlavg Stator nominal temperature83.1842 C°tc_real Stator surface area619.17 cm²stator_surface_area Heat coefficient0.299823 cq_real Current density5.91325 AJmax_real Resistivity of copper at nominal temperature2.07868E-8 Ohm.mpt Resistance of a single coil0.062184 OhmRc Phase resistance0.186552 OhmRphase Phase inductance0.000418097 HLs Nagaoka constant0.246244 Kn Winding coefficient0.95 kw Volume of a single coil51597.5 mm3coil_volume Weight of a single coil264.981 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 construction2.64981 kgrmcu_constr EMF at the cut-in wind speed (Calculated)10.264 VEMF_cut_in EMF at the nominal wind speed (Calculated)14.9455 VEMF_nom Current at the nominal wind speed18.2128 AIac_nom Terminal voltage at the nominal wind speed11.2904 VV_term_line Nominal frequency30.2468 Hzfnom Generator power (Calculated)616.89 WPnom Copper losses (Calculated)185.642 WPcopper Eddy current losses (Calculated)9.8649 WPeddy Generator efficiency (Calculated)0.748803 efficiency_real AC Power at the rectifier (Calculated)555.201 WPnom_rect DC Power at the batteries (Calculated)499.681 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)11.4381 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost359.792 EURTotalcost Total generator mass16.4541 kgrTotalMass Total generator volume3.64765 dm3TotalVolume Blade rotor mass3.30317 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets230.554 EURMagcost Magnet shipping cost20 EURshippingcost Copper mass2.28334 kgrmcu Cost of copper33.7022 EURcoppercost Resin mass2.27458 kgrresinmass Cost of resin31.4185 EURresincost Resin volume1672.48 cm3ResinVolume Total mass of one generator rotor5.94807 kgrTotalMassRotor Cost of iron11.5769 EURironcost Surface area of moulds0.331694 m2woodS Total cost of moulds52.5403 EURwoodcost Output files Octave/Matlab variable file: simulation-6916.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 N40Number of generator poles: 12Magnet length: 46mmMagnet width: 30mmMagnet thickness: 10mmRotor disk thickness: CalculatedMechanical clearance: 3.00mm Generator Stator Inputs Select coil type: RectangularWinding fill factor: CalculatedStator thickness: CalculatedCurrent 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