4F 8 pole 125x75x25 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gbroques on Sat, 21/12/2024 - 22:56

Duration:

00:00:01

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	125.398 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	173.732 RPM	n_nom
Nominal tip speed ratio	3.63679	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.601987	ai
Inner-to-outer magnet radius	0.434721	kd
Flux density in airgap	0.157 T	Bmax
Flux density on magnet surface	0.237 T	Bmg
First harmonic of flux density in airgap	0.1 T	Bp
Flux per pole (Calculated)	0.00222187 Wb	Flux_pole
Magnets on a rotor disk	8	magnet_num
Distance between magnets	0.5 mm	dist_magnet_Rin
Magnet mass	18750 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	234375 mm3	Vmag
Volume of all magnets	3750000 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	448.573 mm	Dout
Average radius	158.63 mm	Ravg
Inner radius	96.1296 mm	Rin
Outer radius	224.287 mm	Rout
Effective outer radius	221.13 mm	Rout_eff
Mass of rotor disks	24.8749 kgr	BackIronMass
Volume of rotor disks	3160.73 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 mm	tw
Number of phases	3	nphase
Number of coils per phase	2	q
Total number of coils in stator	6	coil_num
Number of turns per coil	65	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	4	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	9.08 mm2	sc
Copper wire cross-sectional area (Calculated)	8.92926 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	3.37266 mm	dc_theor
Coil leg width	82.5455 mm	wc
Average length of coil turn	521.833 mm	lavg
Stator nominal temperature	73.1775 C°	tc_real
Stator surface area	5168.99 cm²	stator_surface_area
Heat coefficient	0.260349	cq_real
Current density	5.90039 A	Jmax_real
Resistivity of copper at nominal temperature	2.09179E-8 Ohm.m	pt
Resistance of a single coil	0.0781408 Ohm	Rc
Phase resistance	0.156282 Ohm	Rphase
Phase inductance	0.00142725 H	Ls
Nagaoka constant	0.0806352	Kn
Winding coefficient	0.95	kw
Volume of a single coil	559974 mm3	coil_volume
Weight of a single coil	2838.11 g	coil_weight_constr
Coil hole at Ravg	41.5 mm	coil_hole_Ravg
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	75 mm	coil_hole_Rout_constr
Coil mass for construction	19.8668 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	14.113 V	EMF_nom
Current at the nominal wind speed	53.5755 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	11.5821 Hz	fnom
Generator power (Calculated)	1814.67 W	Pnom
Copper losses (Calculated)	1345.74 W	Pcopper
Eddy current losses (Calculated)	1.56777 W	Peddy
Generator efficiency (Calculated)	0.569692	efficiency_real
AC Power at the rectifier (Calculated)	1633.2 W	Pnom_rect
DC Power at the batteries (Calculated)	1469.88 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)	23.3711 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	648.802 EUR	Totalcost
Total generator mass	61.2375 kgr	TotalMass
Total generator volume	14.0652 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	270.517 EUR	Magcost
Magnet shipping cost	226.449 EUR	shippingcost
Copper mass	16.5204 kgr	mcu
Cost of copper	243.841 EUR	coppercost
Resin mass	1.09222 kgr	resinmass
Cost of resin	15.0867 EUR	resincost
Resin volume	803.102 cm3	ResinVolume
Total mass of one generator rotor	21.8125 kgr	TotalMassRotor
Cost of iron	30.5962 EUR	ironcost
Surface area of moulds	0.560362 m2	woodS
Total cost of moulds	88.7614 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9572.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.00m/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:

125mm

Magnet width:

75mm

Magnet thickness:

25mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

8.00mm

Winding fill factor:

User defined

Winding fill factor:

0.55

Stator thickness:

User defined

Stator thickness:

13mm

Current density:

6.00A/mm2

System Inputs

System voltage:

24.00V

Nominal voltage:

24.00V

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:

false

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³