My First Turbine | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by peterfosseus on Wed, 21/03/2018 - 18:10

Duration:

00:02:32

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	125.398 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	299.298 RPM	n_nom
Nominal tip speed ratio	6.26531	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.133031	ai
Inner-to-outer magnet radius	0.851675	kd
Flux density in airgap	0.355832 T	Bmax
Flux density on magnet surface	0.616898 T	Bmg
First harmonic of flux density in airgap	0.119501 T	Bp
Flux per pole (Calculated)	0.000567848 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	118.299 mm	dist_magnet_Rin
Magnet mass	1656 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	9200 mm3	Vmag
Volume of all magnets	220800 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	620.584 mm	Dout
Average radius	287.131 mm	Ravg
Inner radius	264.131 mm	Rin
Outer radius	310.292 mm	Rout
Effective outer radius	310.131 mm	Rout_eff
Mass of rotor disks	47.6097 kgr	BackIronMass
Volume of rotor disks	6049.52 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.781434 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	12 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	166	Nc
Copper wire diameter	1.5 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	3.54 mm2	sc
Copper wire cross-sectional area (Calculated)	3.5294 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.77 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.12039 mm	dc_theor
Coil leg width	89.9267 mm	wc
Average length of coil turn	382.271 mm	lavg
Stator nominal temperature	65.9895 C°	tc_real
Stator surface area	6187.75 cm²	stator_surface_area
Heat coefficient	0.230149	cq_real
Current density	5.98203 A	Jmax_real
Resistivity of copper at nominal temperature	1.96843E-8 Ohm.m	pt
Resistance of a single coil	0.352855 Ohm	Rc
Phase resistance	1.05856 Ohm	Rphase
Phase inductance	0.00816404 H	Ls
Nagaoka constant	0.0810972	Kn
Winding coefficient	0.95	kw
Volume of a single coil	412517 mm3	coil_volume
Weight of a single coil	2032.46 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	4.04452 mm	coil_hole_Rin_constr
Coil hole at Rout	36.1381 mm	coil_hole_Rout_constr
Coil mass for construction	20.3246 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	14.9683 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	35.7054 V	EMF_nom
Current at the nominal wind speed	21.1764 A	Iac_nom
Terminal voltage at the nominal wind speed	13.1721 V	V_term_line
Nominal frequency	29.9298 Hz	fnom
Generator power (Calculated)	836.815 W	Pnom
Copper losses (Calculated)	1424.1 W	Pcopper
Eddy current losses (Calculated)	3.49912 W	Peddy
Generator efficiency (Calculated)	0.362562	efficiency_real
AC Power at the rectifier (Calculated)	753.133 W	Pnom_rect
DC Power at the batteries (Calculated)	677.82 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)	43.6393 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	730.412 EUR	Totalcost
Total generator mass	73.1446 kgr	TotalMass
Total generator volume	14.5188 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	190.658 EUR	Magcost
Magnet shipping cost	13.3333 EUR	shippingcost
Copper mass	18.0744 kgr	mcu
Cost of copper	266.778 EUR	coppercost
Resin mass	5.8045 kgr	resinmass
Cost of resin	80.177 EUR	resincost
Resin volume	4268.01 cm3	ResinVolume
Total mass of one generator rotor	24.6328 kgr	TotalMassRotor
Cost of iron	58.5599 EUR	ironcost
Surface area of moulds	0.847474 m2	woodS
Total cost of moulds	134.24 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-439.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

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:

Single Rotor with metal disk

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

46mm

Magnet width:

20mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

User defined

Winding fill factor:

0.55

Stator thickness:

12mm

Current density:

6.00A/mm2

System Inputs

System voltage:

35.00V

Nominal voltage:

28.00V

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