natasha 6 coil | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by natashabashya on Sun, 04/10/2020 - 06:22

Duration:

00:01:22

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)	1116.9 RPM	n_nom
Nominal tip speed ratio	14.0282	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	6 mm	hr
Magnet width-to-pole pitch ratio	0.0786021	ai
Inner-to-outer magnet radius	0.856722	kd
Flux density in airgap	0.260077 T	Bmax
Flux density on magnet surface	0.586775 T	Bmg
First harmonic of flux density in airgap	0.0697664 T	Bp
Flux per pole (Calculated)	0.00014674 Wb	Flux_pole
Magnets on a rotor disk	8	magnet_num
Distance between magnets	107.406 mm	dist_magnet_Rin
Magnet mass	180 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	1500 mm3	Vmag
Volume of all magnets	24000 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	349.114 mm	Dout
Average radius	161.986 mm	Ravg
Inner radius	149.486 mm	Rin
Outer radius	174.557 mm	Rout
Effective outer radius	174.486 mm	Rout_eff
Mass of rotor disks	9.04027 kgr	BackIronMass
Volume of rotor disks	1148.7 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.629877 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	2	q
Total number of coils in stator	6	coil_num
Number of turns per coil	595	Nc
Copper wire diameter	1.06 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	0.88 mm2	sc
Copper wire cross-sectional area (Calculated)	0.827091 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	0.88 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.02646 mm	dc_theor
Coil leg width	73.2308 mm	wc
Average length of coil turn	299.945 mm	lavg
Stator nominal temperature	65.3891 C°	tc_real
Stator surface area	2635.82 cm²	stator_surface_area
Heat coefficient	0.227547	cq_real
Current density	5.63926 A	Jmax_real
Resistivity of copper at nominal temperature	2.00148E-8 Ohm.m	pt
Resistance of a single coil	4.05907 Ohm	Rc
Phase resistance	8.11814 Ohm	Rphase
Phase inductance	0.0514301 H	Ls
Nagaoka constant	0.104958	Kn
Winding coefficient	0.95	kw
Volume of a single coil	285547 mm3	coil_volume
Weight of a single coil	1408.76 g	coil_weight_constr
Coil hole at Ravg	10 mm	coil_hole_Ravg
Coil hole at Rin	10 mm	coil_hole_Rin_constr
Coil hole at Rout	10 mm	coil_hole_Rout_constr
Coil mass for construction	9.86129 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	54.8509 V	EMF_nom
Current at the nominal wind speed	4.96255 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	74.4597 Hz	fnom
Generator power (Calculated)	168.087 W	Pnom
Copper losses (Calculated)	599.773 W	Pcopper
Eddy current losses (Calculated)	0.517749 W	Peddy
Generator efficiency (Calculated)	0.208898	efficiency_real
AC Power at the rectifier (Calculated)	151.279 W	Pnom_rect
DC Power at the batteries (Calculated)	136.151 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)	36.2591 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	264.704 EUR	Totalcost
Total generator mass	20.3689 kgr	TotalMass
Total generator volume	4.11617 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	24.8693 EUR	Magcost
Magnet shipping cost	1.44928 EUR	shippingcost
Copper mass	8.42422 kgr	mcu
Cost of copper	124.341 EUR	coppercost
Resin mass	2.72442 kgr	resinmass
Cost of resin	37.6321 EUR	resincost
Resin volume	2003.25 cm3	ResinVolume
Total mass of one generator rotor	4.61013 kgr	TotalMassRotor
Cost of iron	11.1195 EUR	ironcost
Surface area of moulds	0.421349 m2	woodS
Total cost of moulds	66.7417 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6505.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 N42

Number of generator poles:

Magnet length:

25mm

Magnet width:

10mm

Magnet thickness:

6mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

6mm

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