pma_opt_olx | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Sat, 25/04/2020 - 08:00

Duration:

00:01:48

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	121.815 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	235.937 RPM	n_nom
Nominal tip speed ratio	4.93896	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.0962648	ai
Inner-to-outer magnet radius	0.962898	kd
Flux density in airgap	0.606101 T	Bmax
Flux density on magnet surface	0.692178 T	Bmg
First harmonic of flux density in airgap	0.117138 T	Bp
Flux per pole (Calculated)	0.000622859 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	275.75 mm	dist_magnet_Rin
Magnet mass	1944 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	8100 mm3	Vmag
Volume of all magnets	259200 mm3	VolumeMagnet
Remanent magnetic flux density	1.45 T	Br
Magnetic coercivity	1120020 A/m	Hc
Maximum Energy Product	422 KJ/m³	BHmax
Outer diameter	1617.45 mm	Dout
Average radius	793.586 mm	Ravg
Inner radius	778.586 mm	Rin
Outer radius	808.725 mm	Rout
Effective outer radius	808.586 mm	Rout_eff
Mass of rotor disks	258.73 kgr	BackIronMass
Volume of rotor disks	32875.5 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.49376 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	14 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	60	Nc
Copper wire diameter	1.8 mm	dc
Number of wires at hand	7	No_wires_at_hand
Winding fill factor	0.4	kf
Copper wire cross-sectional area	17.78 mm2	sc
Copper wire cross-sectional area (Calculated)	15.9423 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.54 mm²	sc_multi_wires
Copper wire diameter (Calculated)	4.50651 mm	dc_theor
Coil leg width	192.405 mm	wc
Average length of coil turn	646.441 mm	lavg
Stator nominal temperature	29.302 C°	tc_real
Stator surface area	29850.8 cm²	stator_surface_area
Heat coefficient	0.0349085	cq_real
Current density	2.68992 A	Jmax_real
Resistivity of copper at nominal temperature	1.74026E-8 Ohm.m	pt
Resistance of a single coil	0.0379632 Ohm	Rc
Phase resistance	0.151853 Ohm	Rphase
Phase inductance	0.00217559 H	Ls
Nagaoka constant	0.0506157	Kn
Winding coefficient	0.95	kw
Volume of a single coil	1741300 mm3	coil_volume
Weight of a single coil	6370.74 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	22.3559 mm	coil_hole_Rin_constr
Coil hole at Rout	38.0611 mm	coil_hole_Rout_constr
Coil mass for construction	82.8197 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	19.8383 V	EMF_nom
Current at the nominal wind speed	47.8268 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	31.4583 Hz	fnom
Generator power (Calculated)	1619.95 W	Pnom
Copper losses (Calculated)	1042.05 W	Pcopper
Eddy current losses (Calculated)	26.9418 W	Peddy
Generator efficiency (Calculated)	0.57382	efficiency_real
AC Power at the rectifier (Calculated)	1457.96 W	Pnom_rect
DC Power at the batteries (Calculated)	1312.16 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	5	No_bolts_hub
Mass of bearing hub	8344.46 g	BearingHubMass
Rotational losses (Calculated)	134.159 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	2523.31 EUR	Totalcost
Total generator mass	356.859 kgr	TotalMass
Total generator volume	110.955 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	224.027 EUR	Magcost
Magnet shipping cost	15.6522 EUR	shippingcost
Copper mass	73.9828 kgr	mcu
Cost of copper	1091.99 EUR	coppercost
Resin mass	22.2027 kgr	resinmass
Cost of resin	306.683 EUR	resincost
Resin volume	16325.5 cm3	ResinVolume
Total mass of one generator rotor	130.337 kgr	TotalMassRotor
Cost of iron	318.238 EUR	ironcost
Surface area of moulds	3.67662 m2	woodS
Total cost of moulds	582.376 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6307.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.37

Cut-in wind speed:

3.00m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.50

Design TSR:

6.50

Air density:

1.225kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

30mm

Magnet width:

30mm

Magnet thickness:

9mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

3.00A/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