Submitted by bistory on Mon, 19/03/2018 - 11:23 Duration: 00:01:37Tabs 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)324.684 RPMn_nom Nominal tip speed ratio4.07804 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.420147 ai Inner-to-outer magnet radius0.711365 kd Flux density in airgap0.278876 TBmax Flux density on magnet surface0.486186 TBmg First harmonic of flux density in airgap0.199084 TBp Flux per pole (Calculated)0.000676537 WbFlux_pole Magnets on a rotor disk12 magnet_num Distance between magnets29.3609 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 density1.45 TBr Magnetic coercivity1120020 A/mHc Maximum Energy Product422 KJ/m³BHmax Outer diameter320.15 mmDout Average radius136.371 mmRavg Inner radius113.371 mmRin Outer radius160.075 mmRout Effective outer radius159.371 mmRout_eff Mass of rotor disks6.33538 kgrBackIronMass Volume of rotor disks805.004 cm3BackIronVolume Maximum flux density in the magnet rotor disk0.918155 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 coil57 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)2.86299 mm²sc_theor Copper wire cross-sectional area of a sinlge wire1.54 mm²sc_multi_wires Copper wire diameter (Calculated)1.90974 mmdc_theor Coil leg width24.5538 mmwc Average length of coil turn229.099 mmlavg Stator nominal temperature63.3318 C°tc_real Stator surface area1012.55 cm²stator_surface_area Heat coefficient0.218529 cq_real Current density5.57725 AJmax_real Resistivity of copper at nominal temperature1.96514E-8 Ohm.mpt Resistance of a single coil0.0833183 OhmRc Phase resistance0.249955 OhmRphase Phase inductance0.000738829 HLs Nagaoka constant0.187746 Kn Winding coefficient0.95 kw Volume of a single coil73128.4 mm3coil_volume Weight of a single coil372.189 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 construction3.72189 kgrmcu_constr EMF at the cut-in wind speed (Calculated)10.264 VEMF_cut_in EMF at the nominal wind speed (Calculated)15.8459 VEMF_nom Current at the nominal wind speed17.1779 AIac_nom Terminal voltage at the nominal wind speed11.2904 VV_term_line Nominal frequency32.4684 Hzfnom Generator power (Calculated)581.838 WPnom Copper losses (Calculated)221.271 WPcopper Eddy current losses (Calculated)2.58666 WPeddy Generator efficiency (Calculated)0.713057 efficiency_real AC Power at the rectifier (Calculated)523.654 WPnom_rect DC Power at the batteries (Calculated)471.289 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)10.2803 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost434.661 EURTotalcost Total generator mass14.4345 kgrTotalMass Total generator volume2.89802 dm3TotalVolume Blade rotor mass3.30317 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets285.324 EURMagcost Magnet shipping cost20 EURshippingcost Copper mass3.23615 kgrmcu Cost of copper47.7656 EURcoppercost Resin mass2.37896 kgrresinmass Cost of resin32.8603 EURresincost Resin volume1749.24 cm3ResinVolume Total mass of one generator rotor8.81938 kgrTotalMassRotor Cost of iron7.79252 EURironcost Surface area of moulds0.384587 m2woodS Total cost of moulds60.9185 EURwoodcost Output files Octave/Matlab variable file: simulation-408.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: Single RotorMagnetic material: NdFeB N52Number of generator poles: 12Magnet 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: 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