Test1 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Garry D on Thu, 16/02/2023 - 03:52

Duration:

00:00:48

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	417.994 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	2.88193E+41 RPM	n_nom
Nominal tip speed ratio	1.80985E+39	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.243022	ai
Inner-to-outer magnet radius	0.891681	kd
Flux density in airgap	0.222488 T	Bmax
Flux density on magnet surface	0.44021 T	Bmg
First harmonic of flux density in airgap	0.100197 T	Bp
Flux per pole (Calculated)	6.66862E-5 Wb	Flux_pole
Magnets on a rotor disk	20	magnet_num
Distance between magnets	28.7924 mm	dist_magnet_Rin
Magnet mass	225 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	750 mm3	Vmag
Volume of all magnets	30000 mm3	VolumeMagnet
Remanent magnetic flux density	1.195 T	Br
Magnetic coercivity	918880 A/m	Hc
Maximum Energy Product	287 KJ/m³	BHmax
Outer diameter	277.141 mm	Dout
Average radius	130.98 mm	Ravg
Inner radius	123.48 mm	Rin
Outer radius	138.57 mm	Rout
Effective outer radius	138.48 mm	Rout_eff
Mass of rotor disks	3.798 kgr	BackIronMass
Volume of rotor disks	482.592 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.336475 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	6 mm	tw
Number of phases	3	nphase
Number of coils per phase	5	q
Total number of coils in stator	15	coil_num
Number of turns per coil	172	Nc
Copper wire diameter	0.71 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	0.4 mm2	sc
Copper wire cross-sectional area (Calculated)	4.80746E-39 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	0.4 mm²	sc_multi_wires
Copper wire diameter (Calculated)	7.8257E-20 mm	dc_theor
Coil leg width	20.8485 mm	wc
Average length of coil turn	115.464 mm	lavg
Stator nominal temperature	24.528 C°	tc_real
Stator surface area	722.176 cm²	stator_surface_area
Heat coefficient	2.03236E-72	cq_real
Current density	2.40373E-38 A	Jmax_real
Resistivity of copper at nominal temperature	0.0213179 Ohm.m	pt
Resistance of a single coil	1058430 Ohm	Rc
Phase resistance	5292130 Ohm	Rphase
Phase inductance	0.00466983 H	Ls
Nagaoka constant	0.142079	Kn
Winding coefficient	0.57859	kw
Volume of a single coil	14443.5 mm3	coil_volume
Weight of a single coil	71.8446 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	1.14951 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	7.07755E+39 V	EMF_nom
Current at the nominal wind speed	9.61492E-39 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	4.80322E+40 Hz	fnom
Generator power (Calculated)	3.25669E-37 W	Pnom
Copper losses (Calculated)	1.46772E-69 W	Pcopper
Eddy current losses (Calculated)	6.11219E-6 W	Peddy
Generator efficiency (Calculated)	6.93738E-77	efficiency_real
AC Power at the rectifier (Calculated)	2.93102E-37 W	Pnom_rect
DC Power at the batteries (Calculated)	2.63792E-37 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)	4.69441E+39 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	117.036 EUR	Totalcost
Total generator mass	5.72641 kgr	TotalMass
Total generator volume	1.20648 dm3	TotalVolume
Blade rotor mass	0.412897 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	35.0646 EUR	Magcost
Magnet shipping cost	1.81159 EUR	shippingcost
Copper mass	1.06528 kgr	mcu
Cost of copper	15.7236 EUR	coppercost
Resin mass	0.638135 kgr	resinmass
Cost of resin	8.8145 EUR	resincost
Resin volume	469.217 cm3	ResinVolume
Total mass of one generator rotor	4.023 kgr	TotalMassRotor
Cost of iron	4.67154 EUR	ironcost
Surface area of moulds	0.333091 m2	woodS
Total cost of moulds	52.7616 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-8088.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:

8.75

Design TSR:

7.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Single Rotor

Magnetic material:

NdFeB N35

Number of generator poles:

Magnet length:

15mm

Magnet width:

10mm

Magnet thickness:

5mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

1.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

User defined

Winding fill factor:

0.55

Stator thickness:

6mm

Current density:

2.00A/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:

true

Simulation step:

Current step:

RPM Step:

Mesh size:

Automesh

Constants

Copper resistivity:

0.020948 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³