2.4m 12 pole 46x30x10 N52 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gbroques on Sun, 22/12/2024 - 04:31

Duration:

00:01:26

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	104.498 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	237.622 RPM	n_nom
Nominal tip speed ratio	5.96908	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.184265	ai
Inner-to-outer magnet radius	0.862252	kd
Flux density in airgap	0.658583 T	Bmax
Flux density on magnet surface	0.735558 T	Bmg
First harmonic of flux density in airgap	0.239689 T	Bp
Flux per pole (Calculated)	0.0010166 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	120.767 mm	dist_magnet_Rin
Magnet mass	2484 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	331200 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	668.56 mm	Dout
Average radius	310.943 mm	Ravg
Inner radius	287.943 mm	Rin
Outer radius	334.28 mm	Rout
Effective outer radius	333.943 mm	Rout_eff
Mass of rotor disks	55.2554 kgr	BackIronMass
Volume of rotor disks	7021.02 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.26477 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	76	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	4	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	8.04 mm2	sc
Copper wire cross-sectional area (Calculated)	7.81008 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	3.15423 mm	dc_theor
Coil leg width	85.4601 mm	wc
Average length of coil turn	420.345 mm	lavg
Stator nominal temperature	69.4704 C°	tc_real
Stator surface area	6466.09 cm²	stator_surface_area
Heat coefficient	0.244987	cq_real
Current density	5.82842 A	Jmax_real
Resistivity of copper at nominal temperature	2.01727E-8 Ohm.m	pt
Resistance of a single coil	0.0801545 Ohm	Rc
Phase resistance	0.240463 Ohm	Rphase
Phase inductance	0.0020369 H	Ls
Nagaoka constant	0.0864876	Kn
Winding coefficient	0.95	kw
Volume of a single coil	466995 mm3	coil_volume
Weight of a single coil	2356.64 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	23.5664 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	23.2349 V	EMF_nom
Current at the nominal wind speed	46.8605 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	23.7622 Hz	fnom
Generator power (Calculated)	1587.22 W	Pnom
Copper losses (Calculated)	1584.11 W	Pcopper
Eddy current losses (Calculated)	19.4112 W	Peddy
Generator efficiency (Calculated)	0.490686	efficiency_real
AC Power at the rectifier (Calculated)	1428.5 W	Pnom_rect
DC Power at the batteries (Calculated)	1285.65 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)	43.9645 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	898.436 EUR	Totalcost
Total generator mass	85.0312 kgr	TotalMass
Total generator volume	20.712 dm3	TotalVolume
Blade rotor mass	26.4254 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	285.324 EUR	Magcost
Magnet shipping cost	20 EUR	shippingcost
Copper mass	20.666 kgr	mcu
Cost of copper	305.029 EUR	coppercost
Resin mass	6.62583 kgr	resinmass
Cost of resin	91.5219 EUR	resincost
Resin volume	4871.93 cm3	ResinVolume
Total mass of one generator rotor	28.8697 kgr	TotalMassRotor
Cost of iron	67.9642 EUR	ironcost
Surface area of moulds	0.938108 m2	woodS
Total cost of moulds	148.596 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9580.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.40m

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 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:

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