AFmotor1 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Dheeraj123 on Sat, 15/08/2020 - 16:16

Duration:

00:00:53

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	208.997 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	53584.8 RPM	n_nom
Nominal tip speed ratio	673.025	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.555069	ai
Inner-to-outer magnet radius	0.392806	kd
Flux density in airgap	0.157406 T	Bmax
Flux density on magnet surface	0.482572 T	Bmg
First harmonic of flux density in airgap	0.144806 T	Bp
Flux per pole (Calculated)	0.000886553 Wb	Flux_pole
Magnets on a rotor disk	8	magnet_num
Distance between magnets	0.4854 mm	dist_magnet_Rin
Magnet mass	2160 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	18000 mm3	Vmag
Volume of all magnets	288000 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	199.894 mm	Dout
Average radius	68.8152 mm	Ravg
Inner radius	38.8152 mm	Rin
Outer radius	99.9472 mm	Rout
Effective outer radius	98.8152 mm	Rout_eff
Mass of rotor disks	2.46982 kgr	BackIronMass
Volume of rotor disks	313.828 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.92191 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	35 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	265	Nc
Copper wire diameter	0.71 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.57	kf
Copper wire cross-sectional area	0.4 mm2	sc
Copper wire cross-sectional area (Calculated)	0.0115008 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	0.4 mm²	sc_multi_wires
Copper wire diameter (Calculated)	0.12104 mm	dc_theor
Coil leg width	5.31328 mm	wc
Average length of coil turn	196.684 mm	lavg
Stator nominal temperature	607.812 C°	tc_real
Stator surface area	125.404 cm²	stator_surface_area
Heat coefficient	1.35559	cq_real
Current density	0.258767 A	Jmax_real
Resistivity of copper at nominal temperature	2.02954E-5 Ohm.m	pt
Resistance of a single coil	2644.55 Ohm	Rc
Phase resistance	5289.09 Ohm	Rphase
Phase inductance	0.00781344 H	Ls
Nagaoka constant	0.503329	Kn
Winding coefficient	0.352813	kw
Volume of a single coil	36576.3 mm3	coil_volume
Weight of a single coil	187.792 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	30 mm	coil_hole_Rin_constr
Coil hole at Rout	30 mm	coil_hole_Rout_constr
Coil mass for construction	1.31454 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	2629.78 V	EMF_nom
Current at the nominal wind speed	0.103507 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	3572.32 Hz	fnom
Generator power (Calculated)	3.5059 W	Pnom
Copper losses (Calculated)	169.997 W	Pcopper
Eddy current losses (Calculated)	0.0010464 W	Peddy
Generator efficiency (Calculated)	0.00246698	efficiency_real
AC Power at the rectifier (Calculated)	3.15531 W	Pnom_rect
DC Power at the batteries (Calculated)	2.83978 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)	1247.63 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	334.901 EUR	Totalcost
Total generator mass	10.0649 kgr	TotalMass
Total generator volume	1.75743 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	216.146 EUR	Magcost
Magnet shipping cost	17.3913 EUR	shippingcost
Copper mass	1.11831 kgr	mcu
Cost of copper	16.5063 EUR	coppercost
Resin mass	4.31681 kgr	resinmass
Cost of resin	59.6277 EUR	resincost
Resin volume	3174.13 cm3	ResinVolume
Total mass of one generator rotor	4.62982 kgr	TotalMassRotor
Cost of iron	3.03788 EUR	ironcost
Surface area of moulds	0.249894 m2	woodS
Total cost of moulds	39.5833 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6496.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.20m

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:

Single Rotor

Magnetic material:

NdFeB N45

Number of generator poles:

Magnet length:

60mm

Magnet width:

30mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

1.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

Calculated

Stator thickness:

35mm

Current density:

9.00A/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:

true

Simulation step:

Current step:

RPM Step:

Mesh size:

Automesh

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³