f pma | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Sat, 30/05/2020 - 21:49

Duration:

00:00:43

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)	294.767 RPM	n_nom
Nominal tip speed ratio	4.62785	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.608182	ai
Inner-to-outer magnet radius	0.635442	kd
Flux density in airgap	0.584719 T	Bmax
Flux density on magnet surface	0.722305 T	Bmg
First harmonic of flux density in airgap	0.546607 T	Bp
Flux per pole (Calculated)	0.000642404 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	6.9431 mm	dist_magnet_Rin
Magnet mass	1575 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	8750 mm3	Vmag
Volume of all magnets	210000 mm3	VolumeMagnet
Remanent magnetic flux density	1.45 T	Br
Magnetic coercivity	1120020 A/m	Hc
Maximum Energy Product	422 KJ/m³	BHmax
Outer diameter	193.634 mm	Dout
Average radius	78.5068 mm	Ravg
Inner radius	61.0068 mm	Rin
Outer radius	96.8171 mm	Rout
Effective outer radius	96.0068 mm	Rout_eff
Mass of rotor disks	4.6351 kgr	BackIronMass
Volume of rotor disks	588.958 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.10835 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	16 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	60	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.52	kf
Copper wire cross-sectional area	2.01 mm2	sc
Copper wire cross-sectional area (Calculated)	1.97229 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.58508 mm	dc_theor
Coil leg width	14.6401 mm	wc
Average length of coil turn	154.062 mm	lavg
Stator nominal temperature	57.1598 C°	tc_real
Stator surface area	405.987 cm²	stator_surface_area
Heat coefficient	0.190462	cq_real
Current density	4.90618 A	Jmax_real
Resistivity of copper at nominal temperature	1.92109E-8 Ohm.m	pt
Resistance of a single coil	0.0883482 Ohm	Rc
Phase resistance	0.265044 Ohm	Rphase
Phase inductance	0.000479832 H	Ls
Nagaoka constant	0.299499	Kn
Winding coefficient	0.95	kw
Volume of a single coil	36087.8 mm3	coil_volume
Weight of a single coil	171.641 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	12.787 mm	coil_hole_Rin_constr
Coil hole at Rout	37.012 mm	coil_hole_Rout_constr
Coil mass for construction	1.71641 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	14.379 V	EMF_nom
Current at the nominal wind speed	9.86143 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	29.4767 Hz	fnom
Generator power (Calculated)	334.019 W	Pnom
Copper losses (Calculated)	77.325 W	Pcopper
Eddy current losses (Calculated)	6.24862 W	Peddy
Generator efficiency (Calculated)	0.785211	efficiency_real
AC Power at the rectifier (Calculated)	300.617 W	Pnom_rect
DC Power at the batteries (Calculated)	270.555 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)	7.79478 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	266.017 EUR	Totalcost
Total generator mass	9.02666 kgr	TotalMass
Total generator volume	1.76687 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	181.397 EUR	Magcost
Magnet shipping cost	12.6812 EUR	shippingcost
Copper mass	1.49493 kgr	mcu
Cost of copper	22.0652 EUR	coppercost
Resin mass	1.32163 kgr	resinmass
Cost of resin	18.2555 EUR	resincost
Resin volume	971.784 cm3	ResinVolume
Total mass of one generator rotor	3.10505 kgr	TotalMassRotor
Cost of iron	5.70117 EUR	ironcost
Surface area of moulds	0.243675 m2	woodS
Total cost of moulds	38.5981 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6405.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.20m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.00m/s

Nominal wind speed:

8.00m/s

Cut-in TSR:

8.75

Design TSR:

7.00

Air density:

1.225kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

35mm

Magnet width:

25mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

5.00A/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