CEE Ferrite | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Gabriel Costanza on Mon, 13/11/2023 - 16:49

Duration:

00:00:34

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	243.83 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	395.258 RPM	n_nom
Nominal tip speed ratio	4.96443	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.609077	ai
Inner-to-outer magnet radius	0.724947	kd
Flux density in airgap	0.248758 T	Bmax
Flux density on magnet surface	0.24516 T	Bmg
First harmonic of flux density in airgap	0.236666 T	Bp
Flux per pole (Calculated)	0.000624174 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	19.0014 mm	dist_magnet_Rin
Magnet mass	6000 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	50000 mm3	Vmag
Volume of all magnets	1200000 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	366.988 mm	Dout
Average radius	156.783 mm	Ravg
Inner radius	131.783 mm	Rin
Outer radius	183.494 mm	Rout
Effective outer radius	181.783 mm	Rout_eff
Mass of rotor disks	16.6494 kgr	BackIronMass
Volume of rotor disks	2115.55 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.715572 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	53	Nc
Copper wire diameter	1.9 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	2.83 mm2	sc
Copper wire cross-sectional area (Calculated)	2.74149 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.83 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.86878 mm	dc_theor
Coil leg width	20.9776 mm	wc
Average length of coil turn	265.87 mm	lavg
Stator nominal temperature	67.6312 C°	tc_real
Stator surface area	1003.92 cm²	stator_surface_area
Heat coefficient	0.237199	cq_real
Current density	5.81234 A	Jmax_real
Resistivity of copper at nominal temperature	1.96397E-8 Ohm.m	pt
Resistance of a single coil	0.0977899 Ohm	Rc
Phase resistance	0.29337 Ohm	Rphase
Phase inductance	0.000841749 H	Ls
Nagaoka constant	0.183703	Kn
Winding coefficient	0.95	kw
Volume of a single coil	72505.1 mm3	coil_volume
Weight of a single coil	369.961 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	3.69961 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	16.5482 V	EMF_nom
Current at the nominal wind speed	16.4489 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	39.5258 Hz	fnom
Generator power (Calculated)	557.145 W	Pnom
Copper losses (Calculated)	238.128 W	Pcopper
Eddy current losses (Calculated)	5.02317 W	Peddy
Generator efficiency (Calculated)	0.676357	efficiency_real
AC Power at the rectifier (Calculated)	501.43 W	Pnom_rect
DC Power at the batteries (Calculated)	451.287 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	4	No_bolts_hub
Mass of bearing hub	3708.65 g	BearingHubMass
Rotational losses (Calculated)	23.4476 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	259.035 EUR	Totalcost
Total generator mass	27.7703 kgr	TotalMass
Total generator volume	8.0391 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	94.3158 EUR	Magcost
Magnet shipping cost	72.4638 EUR	shippingcost
Copper mass	3.20857 kgr	mcu
Cost of copper	47.3585 EUR	coppercost
Resin mass	1.91231 kgr	resinmass
Cost of resin	26.4145 EUR	resincost
Resin volume	1406.11 cm3	ResinVolume
Total mass of one generator rotor	11.3247 kgr	TotalMassRotor
Cost of iron	20.4788 EUR	ironcost
Surface area of moulds	0.444873 m2	woodS
Total cost of moulds	70.4679 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-8364.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.20m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.50m/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:

50mm

Magnet width:

50mm

Magnet thickness:

20mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

1.50mm

Generator Stator Inputs

Select coil type:

Rectangular

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