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

Submitted by gbroques on Sun, 22/12/2024 - 02:47

Duration:

00:01:54

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)	240.702 RPM	n_nom
Nominal tip speed ratio	7.55805	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.130243	ai
Inner-to-outer magnet radius	0.863505	kd
Flux density in airgap	0.516717 T	Bmax
Flux density on magnet surface	0.622221 T	Bmg
First harmonic of flux density in airgap	0.142528 T	Bp
Flux per pole (Calculated)	0.000974888 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	165.12 mm	dist_magnet_Rin
Magnet mass	2818.8 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	15660 mm3	Vmag
Volume of all magnets	375840 mm3	VolumeMagnet
Remanent magnetic flux density	1.265 T	Br
Magnetic coercivity	982324 A/m	Hc
Maximum Energy Product	326 KJ/m³	BHmax
Outer diameter	850.274 mm	Dout
Average radius	395.923 mm	Ravg
Inner radius	366.923 mm	Rin
Outer radius	425.137 mm	Rout
Effective outer radius	424.923 mm	Rout_eff
Mass of rotor disks	89.3743 kgr	BackIronMass
Volume of rotor disks	11356.3 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.984112 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

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	100	Nc
Copper wire diameter	1.8 mm	dc
Number of wires at hand	4	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	10.16 mm2	sc
Copper wire cross-sectional area (Calculated)	9.54758 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.54 mm²	sc_multi_wires
Copper wire diameter (Calculated)	3.48748 mm	dc_theor
Coil leg width	124.383 mm	wc
Average length of coil turn	515.116 mm	lavg
Stator nominal temperature	74.5323 C°	tc_real
Stator surface area	11532.9 cm²	stator_surface_area
Heat coefficient	0.265857	cq_real
Current density	5.63834 A	Jmax_real
Resistivity of copper at nominal temperature	2.0476E-8 Ohm.m	pt
Resistance of a single coil	0.103814 Ohm	Rc
Phase resistance	0.311442 Ohm	Rphase
Phase inductance	0.00396927 H	Ls
Nagaoka constant	0.0747946	Kn
Winding coefficient	0.95	kw
Volume of a single coil	961076 mm3	coil_volume
Weight of a single coil	4772.4 g	coil_weight_constr
Coil hole at Ravg	27 mm	coil_hole_Ravg
Coil hole at Rin	6.89421 mm	coil_hole_Rin_constr
Coil hole at Rout	47.3614 mm	coil_hole_Rout_constr
Coil mass for construction	47.724 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	29.6978 V	EMF_nom
Current at the nominal wind speed	57.2855 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	24.0702 Hz	fnom
Generator power (Calculated)	1940.33 W	Pnom
Copper losses (Calculated)	3066.11 W	Pcopper
Eddy current losses (Calculated)	17.2026 W	Peddy
Generator efficiency (Calculated)	0.380475	efficiency_real
AC Power at the rectifier (Calculated)	1746.3 W	Pnom_rect
DC Power at the batteries (Calculated)	1571.67 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)	76.108 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1371.06 EUR	Totalcost
Total generator mass	146.61 kgr	TotalMass
Total generator volume	34.6368 dm3	TotalVolume
Blade rotor mass	51.6121 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	260.012 EUR	Magcost
Magnet shipping cost	22.6957 EUR	shippingcost
Copper mass	42.1094 kgr	mcu
Cost of copper	621.535 EUR	coppercost
Resin mass	12.3072 kgr	resinmass
Cost of resin	169.999 EUR	resincost
Resin volume	9049.43 cm3	ResinVolume
Total mass of one generator rotor	46.0965 kgr	TotalMassRotor
Cost of iron	109.93 EUR	ironcost
Surface area of moulds	1.32313 m2	woodS
Total cost of moulds	209.584 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9574.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:

NdFeB N40

Number of generator poles:

Magnet length:

58mm

Magnet width:

27mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

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