Star Shape 32 pole | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gbroques on Sat, 21/12/2024 - 22:42

Duration:

00:00:29

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)	127.942 RPM	n_nom
Nominal tip speed ratio	4.01738	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.400909	ai
Inner-to-outer magnet radius	0.844084	kd
Flux density in airgap	0.517103 T	Bmax
Flux density on magnet surface	0.62218 T	Bmg
First harmonic of flux density in airgap	0.386163 T	Bp
Flux per pole (Calculated)	0.000975122 Wb	Flux_pole
Magnets on a rotor disk	32	magnet_num
Distance between magnets	34.6527 mm	dist_magnet_Rin
Magnet mass	7516.8 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	15660 mm3	Vmag
Volume of all magnets	1002240 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	744.479 mm	Dout
Average radius	342.995 mm	Ravg
Inner radius	313.995 mm	Rin
Outer radius	372.24 mm	Rout
Effective outer radius	371.995 mm	Rout_eff
Mass of rotor disks	68.5172 kgr	BackIronMass
Volume of rotor disks	8706.13 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.987522 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	8	q
Total number of coils in stator	24	coil_num
Number of turns per coil	14	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	8	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	18.16 mm2	sc
Copper wire cross-sectional area (Calculated)	18.0381 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	4.79359 mm	dc_theor
Coil leg width	31.1251 mm	wc
Average length of coil turn	246.269 mm	lavg
Stator nominal temperature	83.8126 C°	tc_real
Stator surface area	3679.28 cm²	stator_surface_area
Heat coefficient	0.302215	cq_real
Current density	5.95973 A	Jmax_real
Resistivity of copper at nominal temperature	2.08334E-8 Ohm.m	pt
Resistance of a single coil	0.00395533 Ohm	Rc
Phase resistance	0.0316427 Ohm	Rphase
Phase inductance	0.000118527 H	Ls
Nagaoka constant	0.186957	Kn
Winding coefficient	0.95	kw
Volume of a single coil	114978 mm3	coil_volume
Weight of a single coil	639.711 g	coil_weight_constr
Coil hole at Ravg	27 mm	coil_hole_Ravg
Coil hole at Rin	19.4502 mm	coil_hole_Rin_constr
Coil hole at Rout	34.6252 mm	coil_hole_Rout_constr
Coil mass for construction	15.9928 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	15.7191 V	EMF_nom
Current at the nominal wind speed	108.229 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	34.1178 Hz	fnom
Generator power (Calculated)	3665.83 W	Pnom
Copper losses (Calculated)	1111.93 W	Pcopper
Eddy current losses (Calculated)	332.288 W	Peddy
Generator efficiency (Calculated)	0.712314	efficiency_real
AC Power at the rectifier (Calculated)	3299.25 W	Pnom_rect
DC Power at the batteries (Calculated)	2969.33 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)	36.3193 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1257.42 EUR	Totalcost
Total generator mass	97.3369 kgr	TotalMass
Total generator volume	26.5537 dm3	TotalVolume
Blade rotor mass	51.6121 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	693.365 EUR	Magcost
Magnet shipping cost	60.5217 EUR	shippingcost
Copper mass	13.4339 kgr	mcu
Cost of copper	198.285 EUR	coppercost
Resin mass	7.86898 kgr	resinmass
Cost of resin	108.693 EUR	resincost
Resin volume	5786.02 cm3	ResinVolume
Total mass of one generator rotor	38.017 kgr	TotalMassRotor
Cost of iron	84.2762 EUR	ironcost
Surface area of moulds	1.09094 m2	woodS
Total cost of moulds	172.804 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9566.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