Submitted by Jaco on Fri, 20/07/2018 - 09:53 Duration: 00:00:59Tabs 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)336.062 RPMn_nom Nominal tip speed ratio4.22094 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.269666 ai Inner-to-outer magnet radius0.699963 kd Flux density in airgap0.48429 TBmax Flux density on magnet surface0.623393 TBmg First harmonic of flux density in airgap0.274946 TBp Flux per pole (Calculated)0.00062532 WbFlux_pole Magnets on a rotor disk12 magnet_num Distance between magnets41.0757 mmdist_magnet_Rin Magnet mass1440 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet8000 mm3Vmag Volume of all magnets192000 mm3VolumeMagnet Remanent magnetic flux density1.3 TBr Magnetic coercivity1006580 A/mHc Maximum Energy Product342 KJ/m³BHmax Outer diameter333.892 mmDout Average radius141.646 mmRavg Inner radius116.646 mmRin Outer radius166.946 mmRout Effective outer radius166.646 mmRout_eff Mass of rotor disks13.7818 kgrBackIronMass Volume of rotor disks1751.18 cm3BackIronVolume Maximum flux density in the magnet rotor disk0.728187 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 phase3 q Total number of coils in stator9 coil_num Number of turns per coil62 Nc Copper wire diameter1.5 mmdc Number of wires at hand2 No_wires_at_hand Winding fill factor0.55 kf Copper wire cross-sectional area3.54 mm2sc Copper wire cross-sectional area (Calculated)3.20982 mm²sc_theor Copper wire cross-sectional area of a sinlge wire1.77 mm²sc_multi_wires Copper wire diameter (Calculated)2.02211 mmdc_theor Coil leg width30.6965 mmwc Average length of coil turn236.387 mmlavg Stator nominal temperature60.5899 C°tc_real Stator surface area1306.13 cm²stator_surface_area Heat coefficient0.206256 cq_real Current density5.44037 AJmax_real Resistivity of copper at nominal temperature1.94928E-8 Ohm.mpt Resistance of a single coil0.0807023 OhmRc Phase resistance0.242107 OhmRphase Phase inductance0.00084745 HLs Nagaoka constant0.170964 Kn Winding coefficient0.95 kw Volume of a single coil94331.3 mm3coil_volume Weight of a single coil478.789 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 construction4.78789 kgrmcu_constr EMF at the cut-in wind speed (Calculated)10.264 VEMF_cut_in EMF at the nominal wind speed (Calculated)16.4894 VEMF_nom Current at the nominal wind speed19.2589 AIac_nom Terminal voltage at the nominal wind speed11.2904 VV_term_line Nominal frequency33.6062 Hzfnom Generator power (Calculated)652.323 WPnom Copper losses (Calculated)269.396 WPcopper Eddy current losses (Calculated)7.91855 WPeddy Generator efficiency (Calculated)0.690595 efficiency_real AC Power at the rectifier (Calculated)587.09 WPnom_rect DC Power at the batteries (Calculated)528.381 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)14.9438 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost324.314 EURTotalcost Total generator mass22.2117 kgrTotalMass Total generator volume4.72819 dm3TotalVolume Blade rotor mass3.30317 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets143.21 EURMagcost Magnet shipping cost11.5942 EURshippingcost Copper mass4.17444 kgrmcu Cost of copper61.6148 EURcoppercost Resin mass2.81544 kgrresinmass Cost of resin38.8893 EURresincost Resin volume2070.17 cm3ResinVolume Total mass of one generator rotor7.61089 kgrTotalMassRotor Cost of iron16.9516 EURironcost Surface area of moulds0.401819 m2woodS Total cost of moulds63.6481 EURwoodcost Output files Octave/Matlab variable file: simulation-833.mat Input parameters Blade Rotor Inputs Turbine radius: 1.20mAerodynamic coefficient: 0.35Cut-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 N42Number of generator poles: 12Magnet length: 50mmMagnet width: 20mmMagnet thickness: 8mmRotor disk thickness: User DefinedRotor disk thickness: 10mmMechanical clearance: 2.50mm Generator Stator Inputs Select coil type: RectangularWinding fill factor: User definedWinding fill factor: 0.55Stator thickness: User definedStator thickness: 13mmCurrent 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