Clone of 22 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by kimon007 on Tue, 30/10/2018 - 15:40

Duration:

00:00:58

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	298.567 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	591.272 RPM	n_nom
Nominal tip speed ratio	3.71319	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	6 mm	hr
Magnet width-to-pole pitch ratio	0.65667	ai
Inner-to-outer magnet radius	0.712067	kd
Flux density in airgap	0.254596 T	Bmax
Flux density on magnet surface	0.385161 T	Bmg
First harmonic of flux density in airgap	0.250528 T	Bp
Flux per pole (Calculated)	0.000557141 Wb	Flux_pole
Magnets on a rotor disk	8	magnet_num
Distance between magnets	12.2694 mm	dist_magnet_Rin
Magnet mass	1656 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	220800 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	213.399 mm	Dout
Average radius	89.1909 mm	Ravg
Inner radius	74.1909 mm	Rin
Outer radius	106.699 mm	Rout
Effective outer radius	104.191 mm	Rout_eff
Mass of rotor disks	1.68888 kgr	BackIronMass
Volume of rotor disks	214.597 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.89311 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	2	q
Total number of coils in stator	6	coil_num
Number of turns per coil	92	Nc
Copper wire diameter	1.25 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	1.23 mm2	sc
Copper wire cross-sectional area (Calculated)	1.11092 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.23 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.18962 mm	dc_theor
Coil leg width	15.8266 mm	wc
Average length of coil turn	201.695 mm	lavg
Stator nominal temperature	60.4754 C°	tc_real
Stator surface area	383.058 cm²	stator_surface_area
Heat coefficient	0.205737	cq_real
Current density	5.41914 A	Jmax_real
Resistivity of copper at nominal temperature	1.95963E-8 Ohm.m	pt
Resistance of a single coil	0.295634 Ohm	Rc
Phase resistance	0.591267 Ohm	Rphase
Phase inductance	0.00120317 H	Ls
Nagaoka constant	0.22713	Kn
Winding coefficient	0.568944	kw
Volume of a single coil	41497.9 mm3	coil_volume
Weight of a single coil	208.481 g	coil_weight_constr
Coil hole at Ravg	46 mm	coil_hole_Ravg
Coil hole at Rin	46 mm	coil_hole_Rin_constr
Coil hole at Rout	46 mm	coil_hole_Rout_constr
Coil mass for construction	1.45937 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	10.2092 V	EMF_nom
Current at the nominal wind speed	6.66555 A	Iac_nom
Terminal voltage at the nominal wind speed	5.6452 V	V_term_line
Nominal frequency	39.4181 Hz	fnom
Generator power (Calculated)	112.885 W	Pnom
Copper losses (Calculated)	78.8092 W	Pcopper
Eddy current losses (Calculated)	0.639703 W	Peddy
Generator efficiency (Calculated)	0.561161	efficiency_real
AC Power at the rectifier (Calculated)	101.597 W	Pnom_rect
DC Power at the batteries (Calculated)	91.4369 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)	8.82938 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	232.276 EUR	Totalcost
Total generator mass	5.77633 kgr	TotalMass
Total generator volume	1.14452 dm3	TotalVolume
Blade rotor mass	0.412897 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	153.703 EUR	Magcost
Magnet shipping cost	13.3333 EUR	shippingcost
Copper mass	1.22427 kgr	mcu
Cost of copper	18.0702 EUR	coppercost
Resin mass	1.20718 kgr	resinmass
Cost of resin	16.6746 EUR	resincost
Resin volume	887.63 cm3	ResinVolume
Total mass of one generator rotor	3.34488 kgr	TotalMassRotor
Cost of iron	2.07732 EUR	ironcost
Surface area of moulds	0.263578 m2	woodS
Total cost of moulds	41.7508 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-2735.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

0.60m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.00m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

6.25

Design TSR:

7.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Single Rotor

Magnetic material:

NdFeB N40

Number of generator poles:

Magnet length:

30mm

Magnet width:

46mm

Magnet thickness:

10mm

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:

13mm

Current density:

6.00A/mm2

System Inputs

System voltage:

12.00V

Nominal voltage:

12.00V

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