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

Submitted by edwardmantey on Thu, 20/08/2020 - 17:06

Duration:

00:00:01

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	50.1592 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	69.0006 RPM	n_nom
Nominal tip speed ratio	3.61103	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.0812332	ai
Inner-to-outer magnet radius	0.96162	kd
Flux density in airgap	0.54 T	Bmax
Flux density on magnet surface	0.62 T	Bmg
First harmonic of flux density in airgap	0.4 T	Bp
Flux per pole (Calculated)	0.0008556 Wb	Flux_pole
Magnets on a rotor disk	20	magnet_num
Distance between magnets	332.081 mm	dist_magnet_Rin
Magnet mass	4140 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	552000 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	2397.27 mm	Dout
Average radius	1175.54 mm	Ravg
Inner radius	1152.54 mm	Rin
Outer radius	1198.63 mm	Rout
Effective outer radius	1198.54 mm	Rout_eff
Mass of rotor disks	710.441 kgr	BackIronMass
Volume of rotor disks	90272.1 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 mm	tw
Number of phases	3	nphase
Number of coils per phase	5	q
Total number of coils in stator	15	coil_num
Number of turns per coil	68	Nc
Copper wire diameter	1.9 mm	dc
Number of wires at hand	8	No_wires_at_hand
Winding fill factor	0.52	kf
Copper wire cross-sectional area	22.72 mm2	sc
Copper wire cross-sectional area (Calculated)	55.8079 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.84 mm²	sc_multi_wires
Copper wire diameter (Calculated)	8.43166 mm	dc_theor
Coil leg width	230.83 mm	wc
Average length of coil turn	787.154 mm	lavg
Stator nominal temperature	734.509 C°	tc_real
Stator surface area	54509.6 cm²	stator_surface_area
Heat coefficient	1.52051	cq_real
Current density	14.738 A	Jmax_real
Resistivity of copper at nominal temperature	2.09179E-8 Ohm.m	pt
Resistance of a single coil	0.0492809 Ohm	Rc
Phase resistance	0.246405 Ohm	Rphase
Phase inductance	0.00437666 H	Ls
Nagaoka constant	0.0397173	Kn
Winding coefficient	0.95	kw
Volume of a single coil	2362080 mm3	coil_volume
Weight of a single coil	11191.9 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	20.6152 mm	coil_hole_Rin_constr
Coil hole at Rout	39.882 mm	coil_hole_Rout_constr
Coil mass for construction	179.07 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	334.847 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	11.5001 Hz	fnom
Generator power (Calculated)	11341.7 W	Pnom
Copper losses (Calculated)	82882.6 W	Pcopper
Eddy current losses (Calculated)	929.766 W	Peddy
Generator efficiency (Calculated)	0.119023	efficiency_real
AC Power at the rectifier (Calculated)	10207.5 W	Pnom_rect
DC Power at the batteries (Calculated)	9186.76 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	8	No_bolts_hub
Mass of bearing hub	29669.2 g	BearingHubMass
Rotational losses (Calculated)	135.682 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	5366.95 EUR	Totalcost
Total generator mass	915.078 kgr	TotalMass
Total generator volume	266.303 dm3	TotalVolume
Blade rotor mass	238.945 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	416.804 EUR	Magcost
Magnet shipping cost	33.3333 EUR	shippingcost
Copper mass	163.082 kgr	mcu
Cost of copper	2407.09 EUR	coppercost
Resin mass	37.4151 kgr	resinmass
Cost of resin	516.811 EUR	resincost
Resin volume	27511.1 cm3	ResinVolume
Total mass of one generator rotor	357.291 kgr	TotalMassRotor
Cost of iron	873.843 EUR	ironcost
Surface area of moulds	7.27526 m2	woodS
Total cost of moulds	1152.4 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6499.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

5.00m

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:

NdFeB N45

Number of generator poles:

Magnet length:

46mm

Magnet width:

30mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

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