PMA-OPT-2 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Sat, 25/04/2020 - 14:00

Duration:

00:00:01

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	114.65 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	157.265 RPM	n_nom
Nominal tip speed ratio	4.70297	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.129196	ai
Inner-to-outer magnet radius	0.954665	kd
Flux density in airgap	0.096 T	Bmax
Flux density on magnet surface	0.176 T	Bmg
First harmonic of flux density in airgap	0.1 T	Bp
Flux per pole (Calculated)	0.000176 Wb	Flux_pole
Magnets on a rotor disk	28	magnet_num
Distance between magnets	164.016 mm	dist_magnet_Rin
Magnet mass	5600 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	20000 mm3	Vmag
Volume of all magnets	1120000 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	1764.81 mm	Dout
Average radius	862.319 mm	Ravg
Inner radius	842.319 mm	Rin
Outer radius	882.407 mm	Rout
Effective outer radius	882.319 mm	Rout_eff
Mass of rotor disks	308.023 kgr	BackIronMass
Volume of rotor disks	39138.8 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 mm	tw
Number of phases	3	nphase
Number of coils per phase	7	q
Total number of coils in stator	21	coil_num
Number of turns per coil	37	Nc
Copper wire diameter	1.9 mm	dc
Number of wires at hand	8	No_wires_at_hand
Winding fill factor	0.57	kf
Copper wire cross-sectional area	22.72 mm2	sc
Copper wire cross-sectional area (Calculated)	23.0595 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.84 mm²	sc_multi_wires
Copper wire diameter (Calculated)	5.41989 mm	dc_theor
Coil leg width	113.447 mm	wc
Average length of coil turn	486.223 mm	lavg
Stator nominal temperature	28.8741 C°	tc_real
Stator surface area	23167.3 cm²	stator_surface_area
Heat coefficient	0.0319339	cq_real
Current density	2.02989 A	Jmax_real
Resistivity of copper at nominal temperature	2.09179E-8 Ohm.m	pt
Resistance of a single coil	0.0165633 Ohm	Rc
Phase resistance	0.115943 Ohm	Rphase
Phase inductance	0.001231 H	Ls
Nagaoka constant	0.0706368	Kn
Winding coefficient	0.95	kw
Volume of a single coil	717085 mm3	coil_volume
Weight of a single coil	3851.64 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	25 mm	coil_hole_Rin_constr
Coil hole at Rout	25 mm	coil_hole_Rout_constr
Coil mass for construction	84.7361 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	7.0565 V	EMF_nom
Current at the nominal wind speed	46.1191 A	Iac_nom
Terminal voltage at the nominal wind speed	5.6452 V	V_term_line
Nominal frequency	36.6952 Hz	fnom
Generator power (Calculated)	781.055 W	Pnom
Copper losses (Calculated)	739.823 W	Pcopper
Eddy current losses (Calculated)	66.9117 W	Peddy
Generator efficiency (Calculated)	0.461107	efficiency_real
AC Power at the rectifier (Calculated)	702.949 W	Pnom_rect
DC Power at the batteries (Calculated)	632.654 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)	106.078 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	2524.12 EUR	Totalcost
Total generator mass	407.406 kgr	TotalMass
Total generator volume	134.54 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	101.821 EUR	Magcost
Magnet shipping cost	67.6329 EUR	shippingcost
Copper mass	76.7365 kgr	mcu
Cost of copper	1132.63 EUR	coppercost
Resin mass	17.0469 kgr	resinmass
Cost of resin	235.467 EUR	resincost
Resin volume	12534.5 cm3	ResinVolume
Total mass of one generator rotor	156.811 kgr	TotalMassRotor
Cost of iron	378.868 EUR	ironcost
Surface area of moulds	4.26346 m2	woodS
Total cost of moulds	675.332 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6317.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.37

Cut-in wind speed:

3.00m/s

Nominal wind speed:

7.00m/s

Cut-in TSR:

8.00

Design TSR:

6.50

Air density:

1.225kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Single Rotor with metal disk

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

40mm

Magnet width:

25mm

Magnet thickness:

20mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

Calculated

Current density:

2.00A/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