test | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by eliasvisjes1 on Mon, 18/11/2024 - 07:41

Duration:

00:03:17

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	59.7134 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	365.521 RPM	n_nom
Nominal tip speed ratio	13.3903	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.161866	ai
Inner-to-outer magnet radius	0.878971	kd
Flux density in airgap	0.18213 T	Bmax
Flux density on magnet surface	0.183716 T	Bmg
First harmonic of flux density in airgap	0.0539921 T	Bp
Flux per pole (Calculated)	0.000698875 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	239 mm	dist_magnet_Rin
Magnet mass	4560 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	38000 mm3	Vmag
Volume of all magnets	912000 mm3	VolumeMagnet
Remanent magnetic flux density	0.39 T	Br
Magnetic coercivity	227950 A/m	Hc
Maximum Energy Product	30 KJ/m³	BHmax
Outer diameter	1256.89 mm	Dout
Average radius	589.95 mm	Ravg
Inner radius	551.95 mm	Rin
Outer radius	628.447 mm	Rout
Effective outer radius	627.95 mm	Rout_eff
Mass of rotor disks	195.296 kgr	BackIronMass
Volume of rotor disks	24815.2 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.505544 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 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	389	Nc
Copper wire diameter	1.4 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	3.08 mm2	sc
Copper wire cross-sectional area (Calculated)	3.06874 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.54 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.97718 mm	dc_theor
Coil leg width	167.569 mm	wc
Average length of coil turn	778.167 mm	lavg
Stator nominal temperature	70.7941 C°	tc_real
Stator surface area	23471.4 cm²	stator_surface_area
Heat coefficient	0.250522	cq_real
Current density	5.97806 A	Jmax_real
Resistivity of copper at nominal temperature	1.96087E-8 Ohm.m	pt
Resistance of a single coil	1.92718 Ohm	Rc
Phase resistance	5.78153 Ohm	Rphase
Phase inductance	0.101493 H	Ls
Nagaoka constant	0.0479969	Kn
Winding coefficient	0.95	kw
Volume of a single coil	1695160 mm3	coil_volume
Weight of a single coil	8377.95 g	coil_weight_constr
Coil hole at Ravg	50 mm	coil_hole_Ravg
Coil hole at Rin	50 mm	coil_hole_Rin_constr
Coil hole at Rout	50 mm	coil_hole_Rout_constr
Coil mass for construction	83.7795 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	20.528 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	125.762 V	EMF_nom
Current at the nominal wind speed	18.4124 A	Iac_nom
Terminal voltage at the nominal wind speed	22.5808 V	V_term_line
Nominal frequency	36.5521 Hz	fnom
Generator power (Calculated)	1247.3 W	Pnom
Copper losses (Calculated)	5880.12 W	Pcopper
Eddy current losses (Calculated)	3.13027 W	Peddy
Generator efficiency (Calculated)	0.16977	efficiency_real
AC Power at the rectifier (Calculated)	1122.57 W	Pnom_rect
DC Power at the batteries (Calculated)	1010.32 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	6	No_bolts_hub
Mass of bearing hub	14290.7 g	BearingHubMass
Rotational losses (Calculated)	216.465 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	2068.29 EUR	Totalcost
Total generator mass	293.9 kgr	TotalMass
Total generator volume	70.7233 dm3	TotalVolume
Blade rotor mass	81.9581 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	74.0445 EUR	Magcost
Magnet shipping cost	55.0725 EUR	shippingcost
Copper mass	75.0159 kgr	mcu
Cost of copper	1107.23 EUR	coppercost
Resin mass	19.0288 kgr	resinmass
Cost of resin	262.843 EUR	resincost
Resin volume	13991.8 cm3	ResinVolume
Total mass of one generator rotor	99.9278 kgr	TotalMassRotor
Cost of iron	240.214 EUR	ironcost
Surface area of moulds	2.42392 m2	woodS
Total cost of moulds	383.949 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9549.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.50m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

2.50m/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:

Ferrite C8

Number of generator poles:

Magnet length:

76mm

Magnet width:

50mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

6.00A/mm2

System Inputs

System voltage:

48.00V

Nominal voltage:

48.00V

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