Clone of Scavenger1_v2 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gphilbri on Thu, 28/02/2019 - 03:09

Duration:

00:00:01

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)	350.318 RPM	n_nom
Nominal tip speed ratio	4.4	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	3 mm	hr
Magnet width-to-pole pitch ratio	0.27279	ai
Inner-to-outer magnet radius	0.498392	kd
Magnets on a rotor disk	8	magnet_num
Distance between magnets	11.5091 mm	dist_magnet_Rin
Magnet mass	96 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	800 mm3	Vmag
Volume of all magnets	12800 mm3	VolumeMagnet
Remanent magnetic flux density	1.265 T	Br
Magnetic coercivity	982324 A/m	Hc
Maximum Energy Product	326 KJ/m³	BHmax
Outer diameter	100 mm	Dout
Average radius	37.3397 mm	Ravg
Inner radius	24.8397 mm	Rin
Outer radius	50 mm	Rout
Effective outer radius	49.8397 mm	Rout_eff
Mass of rotor disks	0.370865 kgr	BackIronMass
Volume of rotor disks	47.1239 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	6 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	16	Nc
Copper wire diameter	0.1 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.52	kf
Copper wire cross-sectional area	0.015708 mm2	sc
Copper wire diameter (Calculated)	0.141421 mm	dc_theor
Coil leg width	10 mm	wc
Average length of coil turn	112.597 mm	lavg
Stator nominal temperature	57.7 C°	tc_real
Stator surface area	135.116 cm²	stator_surface_area
Heat coefficient	0.00315851	cq_real
Current density	127.324 A	Jmax_real
Resistivity of copper at nominal temperature	1.92472E-8 Ohm.m	pt
Resistance of a single coil	2.20746 Ohm	Rc
Phase resistance	4.41492 Ohm	Rphase
Phase inductance	2.05418E-5 H	Ls
Nagaoka constant	0.189875	Kn
Volume of a single coil	6755.81 mm3	coil_volume
Weight of a single coil	0.284614 g	coil_weight_constr
Coil hole at Rin	3 mm	coil_hole_Rin_constr
Coil hole at Rout	8 mm	coil_hole_Rout_constr
Coil mass for construction	0.0019923 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	2.566 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	4.30111 V	EMF_nom
Current at the nominal wind speed	2 A	Iac_nom
Nominal frequency	23.3546 Hz	fnom

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

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	45.05 EUR	Totalcost
Total generator mass	0.669709 kgr	TotalMass
Total generator volume	0.172788 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	16.4465 EUR	Magcost
Magnet shipping cost	0.772947 EUR	shippingcost
Copper mass	0.00151794 kgr	mcu
Cost of copper	0.0224048 EUR	coppercost
Resin mass	0.201326 kgr	resinmass
Cost of resin	2.78089 EUR	resincost
Resin volume	148.034 cm3	ResinVolume
Total mass of one generator rotor	0.233433 kgr	TotalMassRotor
Cost of iron	0.456164 EUR	ironcost
Surface area of moulds	0.16 m2	woodS
Total cost of moulds	25.344 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6068.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.20m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.75

Nominal TSR:

4.40

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

100.00mm

Magnetic material:

NdFeB N40

Number of generator poles:

Magnet length:

25mm

Magnet width:

8mm

Magnet thickness:

4mm

Rotor disk thickness:

3mm

Mechanical clearance:

1.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

3.00mm

Winding fill factor:

0.52

Current at nominal wind speed:

2.00A

Stator thickness:

6mm

Number of turns per coil:

Copper wire diameter:

0.10mm

Number of wires at hand:

Coil leg width:

10mm

Stator nominal temperature:

57.70C°

System Inputs

System voltage:

6.00V

Transmission cable losses:

0.00%

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

Simulation Radius:

Average radius

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