3.6m 30x20x10 N42 24 pole - Keyhole | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gbroques on Wed, 07/08/2024 - 02:08

Duration:

00:00:29

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	139.331 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	209.843 RPM	n_nom
Nominal tip speed ratio	3.95345	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.367901	ai
Inner-to-outer magnet radius	0.883385	kd
Flux density in airgap	0.502599 T	Bmax
Flux density on magnet surface	0.659589 T	Bmg
First harmonic of flux density in airgap	0.37356 T	Bp
Flux per pole (Calculated)	0.000396151 Wb	Flux_pole
Magnets on a rotor disk	28	magnet_num
Distance between magnets	30.9964 mm	dist_magnet_Rin
Magnet mass	2520 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	6000 mm3	Vmag
Volume of all magnets	336000 mm3	VolumeMagnet
Remanent magnetic flux density	1.3 T	Br
Magnetic coercivity	1006580 A/m	Hc
Maximum Energy Product	342 KJ/m³	BHmax
Outer diameter	514.903 mm	Dout
Average radius	242.257 mm	Ravg
Inner radius	227.257 mm	Rin
Outer radius	257.452 mm	Rout
Effective outer radius	257.257 mm	Rout_eff
Mass of rotor disks	32.7753 kgr	BackIronMass
Volume of rotor disks	4164.58 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.805177 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	7	q
Total number of coils in stator	21	coil_num
Number of turns per coil	27	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	3	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	6.81 mm2	sc
Copper wire cross-sectional area (Calculated)	6.6002 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.89964 mm	dc_theor
Coil leg width	25.9732 mm	wc
Average length of coil turn	164.169 mm	lavg
Stator nominal temperature	66.7107 C°	tc_real
Stator surface area	1790.88 cm²	stator_surface_area
Heat coefficient	0.233258	cq_real
Current density	5.81515 A	Jmax_real
Resistivity of copper at nominal temperature	1.94876E-8 Ohm.m	pt
Resistance of a single coil	0.0126843 Ohm	Rc
Phase resistance	0.0887903 Ohm	Rphase
Phase inductance	0.000220166 H	Ls
Nagaoka constant	0.208105	Kn
Winding coefficient	0.95	kw
Volume of a single coil	55432.1 mm3	coil_volume
Weight of a single coil	289.851 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	15.5457 mm	coil_hole_Rin_constr
Coil hole at Rout	24.5155 mm	coil_hole_Rout_constr
Coil mass for construction	6.37672 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	15.4655 V	EMF_nom
Current at the nominal wind speed	39.6012 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	48.9635 Hz	fnom
Generator power (Calculated)	1341.34 W	Pnom
Copper losses (Calculated)	417.738 W	Pcopper
Eddy current losses (Calculated)	80.0103 W	Peddy
Generator efficiency (Calculated)	0.720344	efficiency_real
AC Power at the rectifier (Calculated)	1207.21 W	Pnom_rect
DC Power at the batteries (Calculated)	1086.49 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)	22.9938 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	533.843 EUR	Totalcost
Total generator mass	44.334 kgr	TotalMass
Total generator volume	12.2855 dm3	TotalVolume
Blade rotor mass	11.1482 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	258.122 EUR	Magcost
Magnet shipping cost	20.2899 EUR	shippingcost
Copper mass	5.66709 kgr	mcu
Cost of copper	83.6462 EUR	coppercost
Resin mass	3.37168 kgr	resinmass
Cost of resin	46.5726 EUR	resincost
Resin volume	2479.17 cm3	ResinVolume
Total mass of one generator rotor	17.6476 kgr	TotalMassRotor
Cost of iron	40.3136 EUR	ironcost
Surface area of moulds	0.664068 m2	woodS
Total cost of moulds	105.188 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9247.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.80m

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 N42

Number of generator poles:

Magnet length:

30mm

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:

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