Star Shape 12 pole | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gbroques on Sun, 22/12/2024 - 02:51

Duration:

00:00:01

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	83.5987 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	114.762 RPM	n_nom
Nominal tip speed ratio	3.60352	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.652061	ai
Inner-to-outer magnet radius	0.490959	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)	0.001185 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	0.5 mm	dist_magnet_Rin
Magnet mass	12000 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	100000 mm3	Vmag
Volume of all magnets	2400000 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	396.065 mm	Dout
Average radius	146.448 mm	Ravg
Inner radius	96.4479 mm	Rin
Outer radius	198.032 mm	Rout
Effective outer radius	196.448 mm	Rout_eff
Mass of rotor disks	19.3922 kgr	BackIronMass
Volume of rotor disks	2464.06 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	15 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	82	Nc
Copper wire diameter	1.8 mm	dc
Number of wires at hand	8	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	20.32 mm2	sc
Copper wire cross-sectional area (Calculated)	20.0908 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.54 mm²	sc_multi_wires
Copper wire diameter (Calculated)	5.05899 mm	dc_theor
Coil leg width	201.968 mm	wc
Average length of coil turn	364.08 mm	lavg
Stator nominal temperature	84.1948 C°	tc_real
Stator surface area	13235.9 cm²	stator_surface_area
Heat coefficient	0.303664	cq_real
Current density	5.93233 A	Jmax_real
Resistivity of copper at nominal temperature	2.09179E-8 Ohm.m	pt
Resistance of a single coil	0.030733 Ohm	Rc
Phase resistance	0.0921991 Ohm	Rphase
Phase inductance	0.00105464 H	Ls
Nagaoka constant	0.0591635	Kn
Winding coefficient	0.95	kw
Volume of a single coil	1102990 mm3	coil_volume
Weight of a single coil	5555.68 g	coil_weight_constr
Coil hole at Ravg	29 mm	coil_hole_Ravg
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	50 mm	coil_hole_Rout_constr
Coil mass for construction	55.5568 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	120.545 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	11.4762 Hz	fnom
Generator power (Calculated)	4083 W	Pnom
Copper losses (Calculated)	4019.26 W	Pcopper
Eddy current losses (Calculated)	11.7964 W	Peddy
Generator efficiency (Calculated)	0.50182	efficiency_real
AC Power at the rectifier (Calculated)	3674.7 W	Pnom_rect
DC Power at the batteries (Calculated)	3307.23 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	6	No_bolts_hub
Mass of bearing hub	14290.7 g	BearingHubMass
Rotational losses (Calculated)	22.3315 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	969.845 EUR	Totalcost
Total generator mass	78.0325 kgr	TotalMass
Total generator volume	9.97945 dm3	TotalVolume
Blade rotor mass	51.6121 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	178.78 EUR	Magcost
Magnet shipping cost	144.928 EUR	shippingcost
Copper mass	48.8106 kgr	mcu
Cost of copper	720.445 EUR	coppercost
Resin mass	-2.17026 kgr	resinmass
Cost of resin	-29.9776 EUR	resincost
Resin volume	-1595.78 cm3	ResinVolume
Total mass of one generator rotor	15.6961 kgr	TotalMassRotor
Cost of iron	23.8524 EUR	ironcost
Surface area of moulds	0.484506 m2	woodS
Total cost of moulds	76.7457 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9575.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.00m

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:

100mm

Magnet width:

50mm

Magnet thickness:

20mm

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:

15mm

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