Clone of kierroskone | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Juntunenn on Sun, 29/11/2020 - 17:21

Duration:

00:00:48

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)	539.019 RPM	n_nom
Nominal tip speed ratio	6.77008	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.251222	ai
Inner-to-outer magnet radius	0.820408	kd
Flux density in airgap	0.107733 T	Bmax
Flux density on magnet surface	0.161747 T	Bmg
First harmonic of flux density in airgap	0.0653716 T	Bp
Flux per pole (Calculated)	0.000129593 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	51.757 mm	dist_magnet_Rin
Magnet mass	1280 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	8000 mm3	Vmag
Volume of all magnets	256000 mm3	VolumeMagnet
Remanent magnetic flux density	0.39 T	Br
Magnetic coercivity	227950 A/m	Hc
Maximum Energy Product	30 KJ/m³	BHmax
Outer diameter	445.904 mm	Dout
Average radius	202.728 mm	Ravg
Inner radius	182.728 mm	Rin
Outer radius	222.952 mm	Rout
Effective outer radius	222.728 mm	Rout_eff
Mass of rotor disks	24.5797 kgr	BackIronMass
Volume of rotor disks	3123.22 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.20878 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	18 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	168	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.5	kf
Copper wire cross-sectional area	2.27 mm2	sc
Copper wire cross-sectional area (Calculated)	2.06184 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.62066 mm	dc_theor
Coil leg width	42.7971 mm	wc
Average length of coil turn	234.89 mm	lavg
Stator nominal temperature	53.8609 C°	tc_real
Stator surface area	2412.63 cm²	stator_surface_area
Heat coefficient	0.174766	cq_real
Current density	4.54151 A	Jmax_real
Resistivity of copper at nominal temperature	1.9018E-8 Ohm.m	pt
Resistance of a single coil	0.330608 Ohm	Rc
Phase resistance	1.32243 Ohm	Rphase
Phase inductance	0.00661314 H	Ls
Nagaoka constant	0.191105	Kn
Winding coefficient	0.95	kw
Volume of a single coil	180947 mm3	coil_volume
Weight of a single coil	810.359 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	9.58072 mm	coil_hole_Rin_constr
Coil hole at Rout	30.5019 mm	coil_hole_Rout_constr
Coil mass for construction	10.5347 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	26.4036 V	EMF_nom
Current at the nominal wind speed	10.3092 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	71.8693 Hz	fnom
Generator power (Calculated)	349.186 W	Pnom
Copper losses (Calculated)	421.644 W	Pcopper
Eddy current losses (Calculated)	2.50255 W	Peddy
Generator efficiency (Calculated)	0.43175	efficiency_real
AC Power at the rectifier (Calculated)	314.267 W	Pnom_rect
DC Power at the batteries (Calculated)	282.841 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)	35.4368 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	359.873 EUR	Totalcost
Total generator mass	40.4297 kgr	TotalMass
Total generator volume	9.9943 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	31.1549 EUR	Magcost
Magnet shipping cost	15.4589 EUR	shippingcost
Copper mass	9.6099 kgr	mcu
Cost of copper	141.842 EUR	coppercost
Resin mass	4.9601 kgr	resinmass
Cost of resin	68.5133 EUR	resincost
Resin volume	3647.13 cm3	ResinVolume
Total mass of one generator rotor	12.9299 kgr	TotalMassRotor
Cost of iron	30.2331 EUR	ironcost
Surface area of moulds	0.556373 m2	woodS
Total cost of moulds	88.1294 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6814.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:

Ferrite C8

Number of generator poles:

Magnet length:

40mm

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:

0.50

Stator thickness:

User defined

Stator thickness:

18mm

Current density:

5.00A/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