Submitted by Kostas on Tue, 17/04/2018 - 10:43 Duration: 00:00:43Tabs 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)167.197 RPMn_cut_in RPM at the nominal wind speed (TSR)238.768 RPMn_nom Nominal tip speed ratio3.74865 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness10 mmhr Magnet width-to-pole pitch ratio0.478225 ai Inner-to-outer magnet radius0.748284 kd Flux density in airgap0.613778 TBmax Flux density on magnet surface0.715306 TBmg First harmonic of flux density in airgap0.515319 TBp Flux per pole (Calculated)0.00099327 WbFlux_pole Magnets on a rotor disk16 magnet_num Distance between magnets23.7 mmdist_magnet_Rin Magnet mass4968 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet20700 mm3Vmag Volume of all magnets662400 mm3VolumeMagnet Remanent magnetic flux density1.3 TBr Magnetic coercivity1006580 A/mHc Maximum Energy Product342 KJ/m³BHmax Outer diameter366.721 mmDout Average radius159.746 mmRavg Inner radius136.746 mmRin Outer radius183.36 mmRout Effective outer radius182.746 mmRout_eff Mass of rotor disks16.6252 kgrBackIronMass Volume of rotor disks2112.47 cm3BackIronVolume Maximum flux density in the magnet rotor disk1.32751 TSaturMAX Is the magnet rotor disk saturated?No Saturation Generator Stator Outputs PropertyValueVariable name Stator thickness12 mmtw Number of phases3 nphase Number of coils per phase4 q Total number of coils in stator12 coil_num Number of turns per coil27 Nc Copper wire diameter1.8 mmdc Number of wires at hand2 No_wires_at_hand Winding fill factor0.55 kf Copper wire cross-sectional area5.08 mm2sc Copper wire cross-sectional area (Calculated)4.92021 mm²sc_theor Copper wire cross-sectional area of a sinlge wire2.54 mm²sc_multi_wires Copper wire diameter (Calculated)2.50356 mmdc_theor Coil leg width20.7818 mmwc Average length of coil turn217.255 mmlavg Stator nominal temperature62.6473 C°tc_real Stator surface area1083.59 cm²stator_surface_area Heat coefficient0.215493 cq_real Current density5.81128 AJmax_real Resistivity of copper at nominal temperature1.93364E-8 Ohm.mpt Resistance of a single coil0.0223278 OhmRc Phase resistance0.0893112 OhmRphase Phase inductance0.00021887 HLs Nagaoka constant0.190827 Kn Winding coefficient0.95 kw Volume of a single coil54179.4 mm3coil_volume Weight of a single coil286.134 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 construction3.71974 kgrmcu_constr EMF at the cut-in wind speed (Calculated)10.264 VEMF_cut_in EMF at the nominal wind speed (Calculated)14.407 VEMF_nom Current at the nominal wind speed29.5213 AIac_nom Terminal voltage at the nominal wind speed11.2904 VV_term_line Nominal frequency31.8357 Hzfnom Generator power (Calculated)999.922 WPnom Copper losses (Calculated)233.506 WPcopper Eddy current losses (Calculated)31.5861 WPeddy Generator efficiency (Calculated)0.781081 efficiency_real AC Power at the rectifier (Calculated)899.93 WPnom_rect DC Power at the batteries (Calculated)809.937 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)15.1633 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost634.135 EURTotalcost Total generator mass26.9071 kgrTotalMass Total generator volume7.6049 dm3TotalVolume Blade rotor mass6.45151 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets466.846 EURMagcost Magnet shipping cost40 EURshippingcost Copper mass3.1968 kgrmcu Cost of copper47.1848 EURcoppercost Resin mass2.11711 kgrresinmass Cost of resin29.2435 EURresincost Resin volume1556.7 cm3ResinVolume Total mass of one generator rotor10.7966 kgrTotalMassRotor Cost of iron20.4489 EURironcost Surface area of moulds0.444517 m2woodS Total cost of moulds70.4114 EURwoodcost Output files Octave/Matlab variable file: simulation-551.mat Input parameters Blade Rotor Inputs Turbine radius: 1.50mAerodynamic 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 N42Number of generator poles: 16Magnet length: 46mmMagnet width: 30mmMagnet thickness: 15mmRotor disk thickness: User DefinedRotor disk thickness: 10mmMechanical clearance: 5.00mm Generator Stator Inputs Select coil type: RectangularWinding fill factor: CalculatedStator thickness: User definedStator thickness: 12mmCurrent 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
