1m ferrite | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by aurelieguibert on Sun, 19/05/2019 - 08:55

Duration:

00:00:01

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	149.283 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	205.123 RPM	n_nom
Nominal tip speed ratio	1.78912	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.599231	ai
Inner-to-outer magnet radius	0.469702	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)	0.00032706 Wb	Flux_pole
Magnets on a rotor disk	8	magnet_num
Distance between magnets	2 mm	dist_magnet_Rin
Magnet mass	1104 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	220800 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	176.062 mm	Dout
Average radius	63.7437 mm	Ravg
Inner radius	40.7437 mm	Rin
Outer radius	88.031 mm	Rout
Effective outer radius	86.7437 mm	Rout_eff
Mass of rotor disks	3.83201 kgr	BackIronMass
Volume of rotor disks	486.913 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 mm	tw
Number of phases	3	nphase
Number of coils per phase	2	q
Total number of coils in stator	6	coil_num
Number of turns per coil	187	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	4	No_wires_at_hand
Winding fill factor	0.52	kf
Copper wire cross-sectional area	8.04 mm2	sc
Copper wire cross-sectional area (Calculated)	7.71488 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	3.13494 mm	dc_theor
Coil leg width	222.408 mm	wc
Average length of coil turn	199.904 mm	lavg
Stator nominal temperature	66.9675 C°	tc_real
Stator surface area	5335.25 cm²	stator_surface_area
Heat coefficient	0.23436	cq_real
Current density	5.75737 A	Jmax_real
Resistivity of copper at nominal temperature	2.09179E-8 Ohm.m	pt
Resistance of a single coil	0.0972583 Ohm	Rc
Phase resistance	0.194517 Ohm	Rphase
Phase inductance	0.00108522 H	Ls
Nagaoka constant	0.0504781	Kn
Winding coefficient	0.95	kw
Volume of a single coil	577985 mm3	coil_volume
Weight of a single coil	2715.67 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	10 mm	coil_hole_Rin_constr
Coil hole at Rout	30 mm	coil_hole_Rout_constr
Coil mass for construction	19.0097 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	7.0565 V	EMF_nom
Current at the nominal wind speed	46.2893 A	Iac_nom
Terminal voltage at the nominal wind speed	5.6452 V	V_term_line
Nominal frequency	13.6748 Hz	fnom
Generator power (Calculated)	783.937 W	Pnom
Copper losses (Calculated)	1250.37 W	Pcopper
Eddy current losses (Calculated)	1.72725 W	Peddy
Generator efficiency (Calculated)	0.384214	efficiency_real
AC Power at the rectifier (Calculated)	705.543 W	Pnom_rect
DC Power at the batteries (Calculated)	634.989 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)	4.33064 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	297.461 EUR	Totalcost
Total generator mass	20.8248 kgr	TotalMass
Total generator volume	1.3877 dm3	TotalVolume
Blade rotor mass	1.91156 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	22.1093 EUR	Magcost
Magnet shipping cost	13.3333 EUR	shippingcost
Copper mass	16.1216 kgr	mcu
Cost of copper	237.955 EUR	coppercost
Resin mass	-0.232794 kgr	resinmass
Cost of resin	-3.21555 EUR	resincost
Resin volume	-171.172 cm3	ResinVolume
Total mass of one generator rotor	2.468 kgr	TotalMassRotor
Cost of iron	4.71337 EUR	ironcost
Surface area of moulds	0.226635 m2	woodS
Total cost of moulds	35.899 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6115.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.00m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

2.50m/s

Nominal wind speed:

12.00m/s

Cut-in TSR:

6.25

Design TSR:

5.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

46mm

Magnet width:

30mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

10.00mm

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

6.00A/mm2

System Inputs

System voltage:

12.00V

Nominal voltage:

12.00V

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