Submitted by Kostas on Wed, 17/10/2018 - 10:44 Duration: 00:01:15Tabs 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)298.567 RPMn_cut_in RPM at the nominal wind speed (TSR)525.271 RPMn_nom Nominal tip speed ratio2.74892 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness8 mmhr Magnet width-to-pole pitch ratio0.547919 ai Inner-to-outer magnet radius0.753883 kd Flux density in airgap0.2612 TBmax Flux density on magnet surface0.370071 TBmg First harmonic of flux density in airgap0.223098 TBp Flux per pole (Calculated)0.000528612 WbFlux_pole Magnets on a rotor disk8 magnet_num Distance between magnets26.173 mmdist_magnet_Rin Magnet mass1656 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet13800 mm3Vmag Volume of all magnets220800 mm3VolumeMagnet Remanent magnetic flux density1.3 TBr Magnetic coercivity1006580 A/mHc Maximum Energy Product342 KJ/m³BHmax Outer diameter248.089 mmDout Average radius106.894 mmRavg Inner radius91.8935 mmRin Outer radius124.044 mmRout Effective outer radius121.893 mmRout_eff Mass of rotor disks3.04347 kgrBackIronMass Volume of rotor disks386.718 cm3BackIronVolume Maximum flux density in the magnet rotor disk1.33559 TSaturMAX Is the magnet rotor disk saturated?No Saturation Generator Stator Outputs PropertyValueVariable name Stator thickness10 mmtw Number of phases3 nphase Number of coils per phase2 q Total number of coils in stator6 coil_num Number of turns per coil345 Nc Copper wire diameter0.71 mmdc Number of wires at hand1 No_wires_at_hand Winding fill factor0.55 kf Copper wire cross-sectional area0.4 mm2sc Copper wire cross-sectional area (Calculated)0.181106 mm²sc_theor Copper wire cross-sectional area of a sinlge wire0.4 mm²sc_multi_wires Copper wire diameter (Calculated)0.480321 mmdc_theor Coil leg width25.0909 mmwc Average length of coil turn230.785 mmlavg Stator nominal temperature36.527 C°tc_real Stator surface area694.874 cm²stator_surface_area Heat coefficient0.081556 cq_real Current density4.07488 AJmax_real Resistivity of copper at nominal temperature1.78605E-8 Ohm.mpt Resistance of a single coil3.55517 OhmRc Phase resistance7.11035 OhmRphase Phase inductance0.0191179 HLs Nagaoka constant0.150784 Kn Winding coefficient0.635982 kw Volume of a single coil57906.2 mm3coil_volume Weight of a single coil286.375 gcoil_weight_constr Coil hole at Ravg46 mmcoil_hole_Ravg Coil hole at Rin46 mmcoil_hole_Rin_constr Coil hole at Rout46 mmcoil_hole_Rout_constr Coil mass for construction2.00463 kgrmcu_constr EMF at the cut-in wind speed (Calculated)20.528 VEMF_cut_in EMF at the nominal wind speed (Calculated)36.0718 VEMF_nom Current at the nominal wind speed1.62995 AIac_nom Terminal voltage at the nominal wind speed22.5808 VV_term_line Nominal frequency35.018 Hzfnom Generator power (Calculated)110.417 WPnom Copper losses (Calculated)56.6711 WPcopper Eddy current losses (Calculated)0.0437783 WPeddy Generator efficiency (Calculated)0.625951 efficiency_real AC Power at the rectifier (Calculated)99.3752 WPnom_rect DC Power at the batteries (Calculated)89.4377 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)9.26684 WProt Costs, Mass and Volume PropertyValueVariable name Total generator cost250.208 EURTotalcost Total generator mass7.50764 kgrTotalMass Total generator volume1.49853 dm3TotalVolume Blade rotor mass0.412897 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets158.474 EURMagcost Magnet shipping cost13.3333 EURshippingcost Copper mass1.70835 kgrmcu Cost of copper25.2152 EURcoppercost Resin mass1.09982 kgrresinmass Cost of resin15.1917 EURresincost Resin volume808.693 cm3ResinVolume Total mass of one generator rotor4.69947 kgrTotalMassRotor Cost of iron3.74347 EURironcost Surface area of moulds0.300401 m2woodS Total cost of moulds47.5836 EURwoodcost Output files Octave/Matlab variable file: simulation-1228.mat Input parameters Blade Rotor Inputs Turbine radius: 0.60mAerodynamic coefficient: 0.15Cut-in wind speed: 3.00m/sNominal wind speed: 12.00m/sCut-in TSR: 6.25Design TSR: 3.00Air density: 1.204kg/m³ Generator Rotor Inputs AFPM rotor topology: Single RotorMagnetic material: NdFeB N42Number of generator poles: 8Magnet length: 30mmMagnet width: 46mmMagnet thickness: 10mmRotor disk thickness: User DefinedRotor disk thickness: 8mmMechanical clearance: 3.00mm Generator Stator Inputs Select coil type: RectangularWinding fill factor: User definedWinding fill factor: 0.55Stator thickness: 10mmCurrent density: 9.00A/mm2 System Inputs System voltage: 48.00VNominal voltage: 48.00VTransmission 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