Clone of test met juiste rotor diameter | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by eliasvisjes1 on Wed, 12/02/2025 - 14:55

Duration:

00:01:16

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	104.498 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	294.733 RPM	n_nom
Nominal tip speed ratio	6.16974	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.314426	ai
Inner-to-outer magnet radius	0.777586	kd
Flux density in airgap	0.182288 T	Bmax
Flux density on magnet surface	0.183844 T	Bmg
First harmonic of flux density in airgap	0.101796 T	Bp
Flux per pole (Calculated)	0.00070199 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	89.1232 mm	dist_magnet_Rin
Magnet mass	4560 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	38000 mm3	Vmag
Volume of all magnets	912000 mm3	VolumeMagnet
Remanent magnetic flux density	0.39 T	Br
Magnetic coercivity	227950 A/m	Hc
Maximum Energy Product	30 KJ/m³	BHmax
Outer diameter	685.238 mm	Dout
Average radius	303.706 mm	Ravg
Inner radius	265.706 mm	Rin
Outer radius	342.619 mm	Rout
Effective outer radius	341.706 mm	Rout_eff
Mass of rotor disks	58.0467 kgr	BackIronMass
Volume of rotor disks	7375.69 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.506497 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 mm	tw
Number of phases	3	nphase
Number of coils per phase	3	q
Total number of coils in stator	9	coil_num
Number of turns per coil	221	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.57	kf
Copper wire cross-sectional area	2.27 mm2	sc
Copper wire cross-sectional area (Calculated)	2.17768 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.66557 mm	dc_theor
Coil leg width	67.7018 mm	wc
Average length of coil turn	464.584 mm	lavg
Stator nominal temperature	68.8565 C°	tc_real
Stator surface area	5661.56 cm²	stator_surface_area
Heat coefficient	0.2424	cq_real
Current density	5.75598 A	Jmax_real
Resistivity of copper at nominal temperature	1.97472E-8 Ohm.m	pt
Resistance of a single coil	0.893172 Ohm	Rc
Phase resistance	2.67952 Ohm	Rphase
Phase inductance	0.0225532 H	Ls
Nagaoka constant	0.0927081	Kn
Winding coefficient	0.95	kw
Volume of a single coil	408891 mm3	coil_volume
Weight of a single coil	2102.48 g	coil_weight_constr
Coil hole at Ravg	50 mm	coil_hole_Ravg
Coil hole at Rin	50 mm	coil_hole_Rin_constr
Coil hole at Rout	50 mm	coil_hole_Rout_constr
Coil mass for construction	21.0248 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	20.528 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	57.8683 V	EMF_nom
Current at the nominal wind speed	13.0661 A	Iac_nom
Terminal voltage at the nominal wind speed	22.5808 V	V_term_line
Nominal frequency	29.4733 Hz	fnom
Generator power (Calculated)	885.128 W	Pnom
Copper losses (Calculated)	1372.36 W	Pcopper
Eddy current losses (Calculated)	2.05526 W	Peddy
Generator efficiency (Calculated)	0.383109	efficiency_real
AC Power at the rectifier (Calculated)	796.615 W	Pnom_rect
DC Power at the batteries (Calculated)	716.954 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	5	No_bolts_hub
Mass of bearing hub	8344.46 g	BearingHubMass
Rotational losses (Calculated)	50.8376 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	687.973 EUR	Totalcost
Total generator mass	89.4665 kgr	TotalMass
Total generator volume	21.0207 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	74.0445 EUR	Magcost
Magnet shipping cost	55.0725 EUR	shippingcost
Copper mass	18.7526 kgr	mcu
Cost of copper	276.789 EUR	coppercost
Resin mass	8.10723 kgr	resinmass
Cost of resin	111.984 EUR	resincost
Resin volume	5961.2 cm3	ResinVolume
Total mass of one generator rotor	31.3033 kgr	TotalMassRotor
Cost of iron	71.3974 EUR	ironcost
Surface area of moulds	0.970694 m2	woodS
Total cost of moulds	153.758 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9625.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

2.50m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.75

Design TSR:

7.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

76mm

Magnet width:

50mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

6.00A/mm2

System Inputs

System voltage:

48.00V

Nominal voltage:

48.00V

Transmission cable losses:

10.00%

Rectifier losses:

10.00%

Financial

Copper price:

12.00€/kg

Iron price:

1.00€/kg

Resin price:

11.23€/kg

Plywood price:

17.60 €/m²

Simulation Inputs

Also run UserAFPM:

true

Simulation step:

Current step:

RPM Step:

Mesh size:

Automesh

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³