Magnet Width > Length, Triangular Coil | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by gbroques on Sun, 22/12/2024 - 21:04

Duration:

00:00:55

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	208.997 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	288.227 RPM	n_nom
Nominal tip speed ratio	3.62013	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.837421	ai
Inner-to-outer magnet radius	0.72921	kd
Flux density in airgap	0.645533 T	Bmax
Flux density on magnet surface	0.647158 T	Bmg
First harmonic of flux density in airgap	0.724423 T	Bp
Flux per pole (Calculated)	0.00234524 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	0.5 mm	dist_magnet_Rin
Magnet mass	6300 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	35000 mm3	Vmag
Volume of all magnets	840000 mm3	VolumeMagnet
Remanent magnetic flux density	1.265 T	Br
Magnetic coercivity	982324 A/m	Hc
Maximum Energy Product	326 KJ/m³	BHmax
Outer diameter	375.866 mm	Dout
Average radius	159.645 mm	Ravg
Inner radius	134.645 mm	Rin
Outer radius	187.933 mm	Rout
Effective outer radius	184.645 mm	Rout_eff
Mass of rotor disks	17.4647 kgr	BackIronMass
Volume of rotor disks	2219.15 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	2.45961 T	SaturMAX
Is the magnet rotor disk saturated?	Yes	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	25	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)	3.2123 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.77 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.02289 mm	dc_theor
Coil leg width	12.3776 mm	wc
Average length of coil turn	266.507 mm	lavg
Stator nominal temperature	61.6576 C°	tc_real
Stator surface area	593.769 cm²	stator_surface_area
Heat coefficient	0.211071	cq_real
Current density	5.44457 A	Jmax_real
Resistivity of copper at nominal temperature	1.99171E-8 Ohm.m	pt
Resistance of a single coil	0.0374861 Ohm	Rc
Phase resistance	0.112458 Ohm	Rphase
Phase inductance	0.000212109 H	Ls
Nagaoka constant	0.207054	Kn
Winding coefficient	0.627327	kw
Volume of a single coil	42883.3 mm3	coil_volume
Weight of a single coil	227.726 g	coil_weight_constr
Coil hole at Ravg	39 mm	coil_hole_Ravg
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	70 mm	coil_hole_Rout_constr
Coil mass for construction	2.27726 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	14.1228 V	EMF_nom
Current at the nominal wind speed	19.2738 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	28.8227 Hz	fnom
Generator power (Calculated)	652.826 W	Pnom
Copper losses (Calculated)	125.327 W	Pcopper
Eddy current losses (Calculated)	15.982 W	Peddy
Generator efficiency (Calculated)	0.804095	efficiency_real
AC Power at the rectifier (Calculated)	587.543 W	Pnom_rect
DC Power at the batteries (Calculated)	528.789 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	4	No_bolts_hub
Mass of bearing hub	3708.65 g	BearingHubMass
Rotational losses (Calculated)	17.7412 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	724.536 EUR	Totalcost
Total generator mass	28.2964 kgr	TotalMass
Total generator volume	6.54648 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	566.305 EUR	Magcost
Magnet shipping cost	50.7246 EUR	shippingcost
Copper mass	1.89772 kgr	mcu
Cost of copper	28.0103 EUR	coppercost
Resin mass	2.63401 kgr	resinmass
Cost of resin	36.3834 EUR	resincost
Resin volume	1936.77 cm3	ResinVolume
Total mass of one generator rotor	11.8823 kgr	TotalMassRotor
Cost of iron	21.4816 EUR	ironcost
Surface area of moulds	0.456795 m2	woodS
Total cost of moulds	72.3563 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9589.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.20m

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 N40

Number of generator poles:

Magnet length:

50mm

Magnet width:

70mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

8.00mm

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