Clone of na8 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Wed, 11/11/2020 - 17:56

Duration:

00:00:48

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	113.998 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	370.325 RPM	n_nom
Nominal tip speed ratio	9.47482	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.282536	ai
Inner-to-outer magnet radius	0.7805	kd
Flux density in airgap	0.470675 T	Bmax
Flux density on magnet surface	0.522639 T	Bmg
First harmonic of flux density in airgap	0.2405 T	Bp
Flux per pole (Calculated)	0.000786959 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	63.091 mm	dist_magnet_Rin
Magnet mass	1350 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	7500 mm3	Vmag
Volume of all magnets	180000 mm3	VolumeMagnet
Remanent magnetic flux density	1.35 T	Br
Magnetic coercivity	1041910 A/m	Hc
Maximum Energy Product	366 KJ/m³	BHmax
Outer diameter	456.568 mm	Dout
Average radius	202.791 mm	Ravg
Inner radius	177.791 mm	Rin
Outer radius	228.284 mm	Rout
Effective outer radius	227.791 mm	Rout_eff
Mass of rotor disks	25.7695 kgr	BackIronMass
Volume of rotor disks	3274.4 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.831265 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	45	Nc
Copper wire diameter	1.8 mm	dc
Number of wires at hand	3	No_wires_at_hand
Winding fill factor	0.48	kf
Copper wire cross-sectional area	7.62 mm2	sc
Copper wire cross-sectional area (Calculated)	7.59047 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.54 mm²	sc_multi_wires
Copper wire diameter (Calculated)	3.10956 mm	dc_theor
Coil leg width	55.5014 mm	wc
Average length of coil turn	308.677 mm	lavg
Stator nominal temperature	62.6193 C°	tc_real
Stator surface area	3083.76 cm²	stator_surface_area
Heat coefficient	0.215369	cq_real
Current density	5.97675 A	Jmax_real
Resistivity of copper at nominal temperature	1.95173E-8 Ohm.m	pt
Resistance of a single coil	0.0355779 Ohm	Rc
Phase resistance	0.106734 Ohm	Rphase
Phase inductance	0.000533312 H	Ls
Nagaoka constant	0.119776	Kn
Winding coefficient	0.95	kw
Volume of a single coil	222716 mm3	coil_volume
Weight of a single coil	988.312 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	12.6159 mm	coil_hole_Rin_constr
Coil hole at Rout	47.4389 mm	coil_hole_Rout_constr
Coil mass for construction	9.88312 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	16.5973 V	EMF_nom
Current at the nominal wind speed	45.5428 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	37.0325 Hz	fnom
Generator power (Calculated)	1542.59 W	Pnom
Copper losses (Calculated)	664.145 W	Pcopper
Eddy current losses (Calculated)	29.8236 W	Peddy
Generator efficiency (Calculated)	0.677198	efficiency_real
AC Power at the rectifier (Calculated)	1388.33 W	Pnom_rect
DC Power at the batteries (Calculated)	1249.5 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	5	No_bolts_hub
Mass of bearing hub	8344.46 g	BearingHubMass
Rotational losses (Calculated)	41.3417 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	445.952 EUR	Totalcost
Total generator mass	39.908 kgr	TotalMass
Total generator volume	7.69483 dm3	TotalVolume
Blade rotor mass	20.3543 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	138.877 EUR	Magcost
Magnet shipping cost	10.8696 EUR	shippingcost
Copper mass	8.5163 kgr	mcu
Cost of copper	125.701 EUR	coppercost
Resin mass	4.27214 kgr	resinmass
Cost of resin	59.0107 EUR	resincost
Resin volume	3141.28 cm3	ResinVolume
Total mass of one generator rotor	13.5598 kgr	TotalMassRotor
Cost of iron	31.6965 EUR	ironcost
Surface area of moulds	0.572396 m2	woodS
Total cost of moulds	90.6675 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6562.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.20m

Aerodynamic coefficient:

0.34

Cut-in wind speed:

3.00m/s

Nominal wind speed:

9.00m/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 N45

Number of generator poles:

Magnet length:

50mm

Magnet width:

30mm

Magnet thickness:

5mm

Rotor disk thickness:

Calculated

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

6.00A/mm2

System Inputs

System voltage:

12.00V

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