Submitted by AHMEDNA8 on Fri, 24/04/2020 - 17:50 Duration: 00:00:58Tabs 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)114.65 RPMn_cut_in RPM at the nominal wind speed (TSR)439.052 RPMn_nom Nominal tip speed ratio9.19083 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness8 mmhr Magnet width-to-pole pitch ratio0.0970825 ai Inner-to-outer magnet radius0.944403 kd Flux density in airgap0.385873 TBmax Flux density on magnet surface0.545897 TBmg First harmonic of flux density in airgap0.0825122 TBp Flux per pole (Calculated)0.000327485 WbFlux_pole Magnets on a rotor disk16 magnet_num Distance between magnets180.12 mmdist_magnet_Rin Magnet mass720 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet3000 mm3Vmag Volume of all magnets96000 mm3VolumeMagnet Remanent magnetic flux density1.45 TBr Magnetic coercivity1120020 A/mHc Maximum Energy Product422 KJ/m³BHmax Outer diameter1079.39 mmDout Average radius524.601 mmRavg Inner radius509.601 mmRin Outer radius539.694 mmRout Effective outer radius539.601 mmRout_eff Mass of rotor disks115.223 kgrBackIronMass Volume of rotor disks14640.8 cm3BackIronVolume Maximum flux density in the magnet rotor disk0.76203 TSaturMAX Is the magnet rotor disk saturated?No Saturation Generator Stator Outputs PropertyValueVariable name Stator thickness14 mmtw Number of phases3 nphase Number of coils per phase4 q Total number of coils in stator12 coil_num Number of turns per coil61 Nc Copper wire diameter1.8 mmdc Number of wires at hand5 No_wires_at_hand Winding fill factor0.44 kf Copper wire cross-sectional area12.7 mm2sc Copper wire cross-sectional area (Calculated)12.0202 mm²sc_theor Copper wire cross-sectional area of a sinlge wire2.54 mm²sc_multi_wires Copper wire diameter (Calculated)3.9131 mmdc_theor Coil leg width127.021 mmwc Average length of coil turn449.265 mmlavg Stator nominal temperature35.9305 C°tc_real Stator surface area13695.8 cm²stator_surface_area Heat coefficient0.0779287 cq_real Current density3.78589 AJmax_real Resistivity of copper at nominal temperature1.78292E-8 Ohm.mpt Resistance of a single coil0.0384734 OhmRc Phase resistance0.153894 OhmRphase Phase inductance0.0015565 HLs Nagaoka constant0.0725358 Kn Winding coefficient0.95 kw Volume of a single coil798923 mm3coil_volume Weight of a single coil3213.55 gcoil_weight_constr Coil hole at Ravg20 mmcoil_hole_Ravg Coil hole at Rin12.285 mmcoil_hole_Rin_constr Coil hole at Rout27.9901 mmcoil_hole_Rout_constr Coil mass for construction41.7761 kgrmcu_constr EMF at the cut-in wind speed (Calculated)5.132 VEMF_cut_in EMF at the nominal wind speed (Calculated)19.7335 VEMF_nom Current at the nominal wind speed48.0808 AIac_nom Terminal voltage at the nominal wind speed11.2904 VV_term_line Nominal frequency58.5403 Hzfnom Generator power (Calculated)1628.56 WPnom Copper losses (Calculated)1067.3 WPcopper Eddy current losses (Calculated)26.1151 WPeddy Generator efficiency (Calculated)0.572521 efficiency_real AC Power at the rectifier (Calculated)1465.7 WPnom_rect DC Power at the batteries (Calculated)1319.13 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)122.566 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost1248 EURTotalcost Total generator mass165.566 kgrTotalMass Total generator volume42.0923 dm3TotalVolume Blade rotor mass15.2925 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets84.0851 EURMagcost Magnet shipping cost5.7971 EURshippingcost Copper mass37.3383 kgrmcu Cost of copper551.114 EURcoppercost Resin mass12.285 kgrresinmass Cost of resin169.692 EURresincost Resin volume9033.09 cm3ResinVolume Total mass of one generator rotor57.9715 kgrTotalMassRotor Cost of iron141.724 EURironcost Surface area of moulds1.90271 m2woodS Total cost of moulds301.389 EURwoodcost Output files Octave/Matlab variable file: simulation-6293.mat Input parameters Blade Rotor Inputs Turbine radius: 2.00mAerodynamic coefficient: 0.37Cut-in wind speed: 3.00m/sNominal wind speed: 10.00m/sCut-in TSR: 8.00Design TSR: 6.50Air density: 1.225kg/m³ Generator Rotor Inputs AFPM rotor topology: Double RotorMagnetic material: NdFeB N52Number of generator poles: 16Magnet length: 30mmMagnet width: 20mmMagnet thickness: 5mmRotor disk thickness: User DefinedRotor disk thickness: 8mmMechanical clearance: 3.00mm Generator Stator Inputs Select coil type: KeyholeWinding fill factor: CalculatedStator thickness: CalculatedCurrent density: 4.00A/mm2 System Inputs System voltage: 12.00VNominal 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: trueSimulation step: 2Current step: 2RPM Step: 5Mesh size: Automesh Constants Copper resistivity: 1.678E-8 Ω·mCopper density: 8.94g/cm³Iron density: 7.87g/cm³Resin density: 1.36g/cm³