Submitted by gphilbri on Thu, 28/02/2019 - 03:13 Duration: 00:00:01Tabs Results 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)350.318 RPMn_nom Nominal tip speed ratio4.4 tsr_nom Generator Rotor Outputs PropertyValueVariable name Rotor disk thickness3 mmhr Magnet width-to-pole pitch ratio0.409186 ai Inner-to-outer magnet radius0.498392 kd Magnets on a rotor disk12 magnet_num Distance between magnets5.0061 mmdist_magnet_Rin Magnet mass144 gMagnetMass Magnet density7.5 g/cm3mag_density Volume of a single magnet800 mm3Vmag Volume of all magnets19200 mm3VolumeMagnet Remanent magnetic flux density1.265 TBr Magnetic coercivity982324 A/mHc Maximum Energy Product326 KJ/m³BHmax Outer diameter100 mmDout Average radius37.3397 mmRavg Inner radius24.8397 mmRin Outer radius50 mmRout Effective outer radius49.8397 mmRout_eff Mass of rotor disks0.370865 kgrBackIronMass Volume of rotor disks47.1239 cm3BackIronVolume Generator Stator Outputs PropertyValueVariable name Stator thickness6 mmtw Number of phases3 nphase Number of coils per phase3 q Total number of coils in stator9 coil_num Number of turns per coil16 Nc Copper wire diameter0.1 mmdc Number of wires at hand3 No_wires_at_hand Winding fill factor0.52 kf Copper wire cross-sectional area0.0235619 mm2sc Copper wire diameter (Calculated)0.173205 mmdc_theor Coil leg width10 mmwc Average length of coil turn91.7313 mmlavg Stator nominal temperature57.7 C°tc_real Stator surface area165.116 cm²stator_surface_area Heat coefficient0.00315851 cq_real Current density84.8826 AJmax_real Resistivity of copper at nominal temperature1.92472E-8 Ohm.mpt Resistance of a single coil1.19893 OhmRc Phase resistance3.59678 OhmRphase Phase inductance2.23965E-5 HLs Nagaoka constant0.207939 Kn Volume of a single coil5503.88 mm3coil_volume Weight of a single coil0.347807 gcoil_weight_constr Coil hole at Rin5 mmcoil_hole_Rin_constr Coil hole at Rout8 mmcoil_hole_Rout_constr Coil mass for construction0.00347807 kgrmcu_constr EMF at the cut-in wind speed (Calculated)2.566 VEMF_cut_in EMF at the nominal wind speed (Calculated)4.30111 VEMF_nom Current at the nominal wind speed2 AIac_nom Nominal frequency35.0318 Hzfnom Generator Bearing Hub Outputs PropertyValueVariable name Number of bolts on hub4 No_bolts_hub Mass of bearing hub3708.65 gBearingHubMass Costs, Mass and Volume PropertyValueVariable name Total generator cost53.0026 EURTotalcost Total generator mass0.698029 kgrTotalMass Total generator volume0.172788 dm3TotalVolume Blade rotor mass3.30317 kgrblade_rotor_mass Softwood density500 kgr/m³softwood_density Cost of magnets24.6698 EURMagcost Magnet shipping cost1.15942 EURshippingcost Copper mass0.00278246 kgrmcu Cost of copper0.0410691 EURcoppercost Resin mass0.180382 kgrresinmass Cost of resin2.4916 EURresincost Resin volume132.634 cm3ResinVolume Total mass of one generator rotor0.257433 kgrTotalMassRotor Cost of iron0.456164 EURironcost Surface area of moulds0.16 m2woodS Total cost of moulds25.344 EURwoodcost Output files Octave/Matlab variable file: simulation-6070.mat Input parameters Blade Rotor Inputs Turbine radius: 1.20mCut-in wind speed: 3.00m/sNominal wind speed: 10.00m/sCut-in TSR: 8.75Nominal TSR: 4.40Air density: 1.204kg/m³ Generator Rotor Inputs AFPM rotor topology: Double RotorOuter diameter: 100.00mmMagnetic material: NdFeB N40Number of generator poles: 12Magnet length: 25mmMagnet width: 8mmMagnet thickness: 4mmRotor disk thickness: 3mmMechanical clearance: 1.00mm Generator Stator Inputs Select coil type: TriangularWinder bolt size: 5.00mmWinding fill factor: 0.52Current at nominal wind speed: 2.00AStator thickness: 6mmNumber of turns per coil: 16Copper wire diameter: 0.10mmNumber of wires at hand: 3Coil leg width: 10mmStator nominal temperature: 57.70C° System Inputs System voltage: 6.00VTransmission cable losses: 0.00%Rectifier losses: 10.00% Financial Copper price: 12.00€/kgIron price: 1.00€/kgResin price: 11.23€/kgPlywood price: 17.60 €/m² Simulation Inputs Simulation Radius: Average radiusSimulation step: 2Current step: 1RPM Step: 1Mesh size: Automesh Constants Copper resistivity: 1.678E-8 Ω·mCopper density: 8.94g/cm³Iron density: 7.87g/cm³Resin density: 1.36g/cm³