Test 16 mags - Rectangular | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Kostas on Sun, 11/08/2024 - 12:00

Duration:

00:00:30

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)	283.94 RPM	n_nom
Nominal tip speed ratio	3.56629	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.607579	ai
Inner-to-outer magnet radius	0.690727	kd
Flux density in airgap	0.574911 T	Bmax
Flux density on magnet surface	0.645294 T	Bmg
First harmonic of flux density in airgap	0.536105 T	Bp
Flux per pole (Calculated)	0.000899107 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	10.3442 mm	dist_magnet_Rin
Magnet mass	3312 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	441600 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	298.98 mm	Dout
Average radius	125.736 mm	Ravg
Inner radius	102.736 mm	Rin
Outer radius	149.49 mm	Rout
Effective outer radius	148.736 mm	Rout_eff
Mass of rotor disks	11.0505 kgr	BackIronMass
Volume of rotor disks	1404.12 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.1311 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	4	q
Total number of coils in stator	12	coil_num
Number of turns per coil	24	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)	3.29094 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.77 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.04751 mm	dc_theor
Coil leg width	11.8825 mm	wc
Average length of coil turn	189.311 mm	lavg
Stator nominal temperature	63.0611 C°	tc_real
Stator surface area	539.878 cm²	stator_surface_area
Heat coefficient	0.217331	cq_real
Current density	5.57787 A	Jmax_real
Resistivity of copper at nominal temperature	1.95393E-8 Ohm.m	pt
Resistance of a single coil	0.025078 Ohm	Rc
Phase resistance	0.100312 Ohm	Rphase
Phase inductance	0.000159595 H	Ls
Nagaoka constant	0.251262	Kn
Winding coefficient	0.95	kw
Volume of a single coil	29243.4 mm3	coil_volume
Weight of a single coil	155.772 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	2.02504 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	13.7853 V	EMF_nom
Current at the nominal wind speed	19.7457 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	37.8587 Hz	fnom
Generator power (Calculated)	668.81 W	Pnom
Copper losses (Calculated)	117.332 W	Pcopper
Eddy current losses (Calculated)	19.0255 W	Peddy
Generator efficiency (Calculated)	0.818311	efficiency_real
AC Power at the rectifier (Calculated)	601.929 W	Pnom_rect
DC Power at the batteries (Calculated)	541.736 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)	12.138 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	430.727 EUR	Totalcost
Total generator mass	18.0738 kgr	TotalMass
Total generator volume	4.14216 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	307.406 EUR	Magcost
Magnet shipping cost	26.6667 EUR	shippingcost
Copper mass	1.72548 kgr	mcu
Cost of copper	25.4681 EUR	coppercost
Resin mass	1.98585 kgr	resinmass
Cost of resin	27.4304 EUR	resincost
Resin volume	1460.18 cm3	ResinVolume
Total mass of one generator rotor	7.18123 kgr	TotalMassRotor
Cost of iron	13.5921 EUR	ironcost
Surface area of moulds	0.358778 m2	woodS
Total cost of moulds	56.8304 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9263.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:

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