5kw prelimary | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by josh manning 1 on Wed, 11/09/2024 - 08:42

Duration:

00:00:28

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	71.6561 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	95.5414 RPM	n_nom
Nominal tip speed ratio	5	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.635961	ai
Inner-to-outer magnet radius	0.857722	kd
Flux density in airgap	0.653997 T	Bmax
Flux density on magnet surface	0.735267 T	Bmg
First harmonic of flux density in airgap	0.621399 T	Bp
Flux per pole (Calculated)	0.00101634 Wb	Flux_pole
Magnets on a rotor disk	40	magnet_num
Distance between magnets	13.5598 mm	dist_magnet_Rin
Magnet mass	8280 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	1104000 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	647.317 mm	Dout
Average radius	300.311 mm	Ravg
Inner radius	277.311 mm	Rin
Outer radius	323.658 mm	Rout
Effective outer radius	323.311 mm	Rout_eff
Mass of rotor disks	51.7998 kgr	BackIronMass
Volume of rotor disks	6581.93 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.30321 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	10	q
Total number of coils in stator	30	coil_num
Number of turns per coil	92	Nc
Copper wire diameter	1.18 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	1.09 mm2	sc
Copper wire cross-sectional area (Calculated)	1.05521 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.09 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.1594 mm	dc_theor
Coil leg width	14.0252 mm	wc
Average length of coil turn	196.039 mm	lavg
Stator nominal temperature	68.5338 C°	tc_real
Stator surface area	1649.69 cm²	stator_surface_area
Heat coefficient	0.241035	cq_real
Current density	5.80848 A	Jmax_real
Resistivity of copper at nominal temperature	1.99838E-8 Ohm.m	pt
Resistance of a single coil	0.330661 Ohm	Rc
Phase resistance	3.30661 Ohm	Rphase
Phase inductance	0.00594323 H	Ls
Nagaoka constant	0.237522	Kn
Winding coefficient	0.95	kw
Volume of a single coil	35743.3 mm3	coil_volume
Weight of a single coil	179.57 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	30 mm	coil_hole_Rin_constr
Coil hole at Rout	30 mm	coil_hole_Rout_constr
Coil mass for construction	5.56668 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	94.0867 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	125.449 V	EMF_nom
Current at the nominal wind speed	6.33125 A	Iac_nom
Terminal voltage at the nominal wind speed	98.791 V	V_term_line
Nominal frequency	31.8471 Hz	fnom
Generator power (Calculated)	1918.62 W	Pnom
Copper losses (Calculated)	397.633 W	Pcopper
Eddy current losses (Calculated)	17.4247 W	Peddy
Generator efficiency (Calculated)	0.811754	efficiency_real
AC Power at the rectifier (Calculated)	1822.69 W	Pnom_rect
DC Power at the batteries (Calculated)	1731.56 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)	29.8717 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1297.6 EUR	Totalcost
Total generator mass	69.9009 kgr	TotalMass
Total generator volume	19.4167 dm3	TotalVolume
Blade rotor mass	81.9581 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	951.081 EUR	Magcost
Magnet shipping cost	66.6667 EUR	shippingcost
Copper mass	5.27249 kgr	mcu
Cost of copper	77.8219 EUR	coppercost
Resin mass	4.54857 kgr	resinmass
Cost of resin	62.829 EUR	resincost
Resin volume	3344.54 cm3	ResinVolume
Total mass of one generator rotor	30.0399 kgr	TotalMassRotor
Cost of iron	63.7138 EUR	ironcost
Surface area of moulds	0.897409 m2	woodS
Total cost of moulds	142.15 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9436.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.50m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.00m/s

Nominal wind speed:

7.00m/s

Cut-in TSR:

8.75

Design TSR:

5.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

46mm

Magnet width:

30mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

User defined

Winding fill factor:

0.55

Stator thickness:

User defined

Stator thickness:

13mm

Current density:

6.00A/mm2

System Inputs

System voltage:

220.00V

Nominal voltage:

220.00V

Transmission cable losses:

5.00%

Rectifier losses:

5.00%

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