Star Shape 16 pole Ferrite | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gbroques on Sat, 21/12/2024 - 22:18

Duration:

00:00:02

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)	114.986 RPM	n_nom
Nominal tip speed ratio	3.61057	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.79991	ai
Inner-to-outer magnet radius	0.673981	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)	0.00165307 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	0.5 mm	dist_magnet_Rin
Magnet mass	27900 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	174375 mm3	Vmag
Volume of all magnets	5580000 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	575.427 mm	Dout
Average radius	238.759 mm	Ravg
Inner radius	192.259 mm	Rin
Outer radius	287.713 mm	Rout
Effective outer radius	285.259 mm	Rout_eff
Mass of rotor disks	40.9331 kgr	BackIronMass
Volume of rotor disks	5201.16 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	15 mm	tw
Number of phases	3	nphase
Number of coils per phase	4	q
Total number of coils in stator	12	coil_num
Number of turns per coil	33	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	81.28 mm	wc
Average length of coil turn	375.628 mm	lavg
Stator nominal temperature	84.1948 C°	tc_real
Stator surface area	7327.45 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	0.0127605 Ohm	Rc
Phase resistance	0.0510419 Ohm	Rphase
Phase inductance	0.000427988 H	Ls
Nagaoka constant	0.104452	Kn
Winding coefficient	0.95	kw
Volume of a single coil	457966 mm3	coil_volume
Weight of a single coil	2388.29 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	31.0478 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	15.3315 Hz	fnom
Generator power (Calculated)	4083 W	Pnom
Copper losses (Calculated)	2225.08 W	Pcopper
Eddy current losses (Calculated)	10.5062 W	Peddy
Generator efficiency (Calculated)	0.643035	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)	30.9856 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	983.827 EUR	Totalcost
Total generator mass	96.3872 kgr	TotalMass
Total generator volume	23.6653 dm3	TotalVolume
Blade rotor mass	51.6121 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	405.893 EUR	Magcost
Magnet shipping cost	336.957 EUR	shippingcost
Copper mass	27.0218 kgr	mcu
Cost of copper	398.842 EUR	coppercost
Resin mass	0.532211 kgr	resinmass
Cost of resin	7.35138 EUR	resincost
Resin volume	391.332 cm3	ResinVolume
Total mass of one generator rotor	34.4166 kgr	TotalMassRotor
Cost of iron	50.3478 EUR	ironcost
Surface area of moulds	0.766372 m2	woodS
Total cost of moulds	121.393 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9563.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:

93mm

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:

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