PMA-1.004 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Fri, 31/07/2020 - 17:50

Duration:

00:00:06

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	117.038 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	593.65 RPM	n_nom
Nominal tip speed ratio	15.5338	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.749567	ai
Inner-to-outer magnet radius	0.573805	kd
Flux density in airgap	0.716334 T	Bmax
Flux density on magnet surface	0.818069 T	Bmg
First harmonic of flux density in airgap	0.672769 T	Bp
Flux per pole (Calculated)	0.000949514 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	-0.6795 mm	dist_magnet_Rin
Magnet mass	3588 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	14950 mm3	Vmag
Volume of all magnets	478400 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	217.306 mm	Dout
Average radius	84.9317 mm	Ravg
Inner radius	61.9317 mm	Rin
Outer radius	108.653 mm	Rout
Effective outer radius	107.932 mm	Rout_eff
Mass of rotor disks	5.83766 kgr	BackIronMass
Volume of rotor disks	741.762 cm3	BackIronVolume

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	21	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.5	kf
Copper wire cross-sectional area	4.02 mm2	sc
Copper wire cross-sectional area (Calculated)	3.64803 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.15573 mm	dc_theor
Coil leg width	9.4738 mm	wc
Average length of coil turn	161.484 mm	lavg
Stator nominal temperature	53.5175 C°	tc_real
Stator surface area	367.168 cm²	stator_surface_area
Heat coefficient	0.173101	cq_real
Current density	4.53735 A	Jmax_real
Resistivity of copper at nominal temperature	1.88714E-8 Ohm.m	pt
Resistance of a single coil	0.0159194 Ohm	Rc
Phase resistance	0.0636774 Ohm	Rphase
Phase inductance	8.98223E-5 H	Ls
Nagaoka constant	0.35148	Kn
Winding coefficient	0.95	kw
Volume of a single coil	27537.6 mm3	coil_volume
Weight of a single coil	133.481 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	12.956 mm	coil_hole_Rin_constr
Coil hole at Rout	36.8834 mm	coil_hole_Rout_constr
Coil mass for construction	1.73526 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	26.6329 V	EMF_nom
Current at the nominal wind speed	18.2401 A	Iac_nom
Terminal voltage at the nominal wind speed	22.5808 V	V_term_line
Nominal frequency	79.1533 Hz	fnom
Generator power (Calculated)	1235.63 W	Pnom
Copper losses (Calculated)	63.557 W	Pcopper
Eddy current losses (Calculated)	145.802 W	Peddy
Generator efficiency (Calculated)	0.832498	efficiency_real
AC Power at the rectifier (Calculated)	1112.07 W	Pnom_rect
DC Power at the batteries (Calculated)	1000.86 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)	39.2552 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	506.172 EUR	Totalcost
Total generator mass	12.5554 kgr	TotalMass
Total generator volume	2.52199 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	411.988 EUR	Magcost
Magnet shipping cost	28.8889 EUR	shippingcost
Copper mass	1.46249 kgr	mcu
Cost of copper	21.5864 EUR	coppercost
Resin mass	1.66722 kgr	resinmass
Cost of resin	23.0291 EUR	resincost
Resin volume	1225.9 cm3	ResinVolume
Total mass of one generator rotor	4.71283 kgr	TotalMassRotor
Cost of iron	7.18033 EUR	ironcost
Surface area of moulds	0.267606 m2	woodS
Total cost of moulds	42.3888 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6488.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.37

Cut-in wind speed:

2.80m/s

Nominal wind speed:

8.00m/s

Cut-in TSR:

8.75

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:

46mm

Magnet width:

25mm

Magnet thickness:

13mm

Rotor disk thickness:

Calculated

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

5.00A/mm2

System Inputs

System voltage:

12.00V

Nominal voltage:

48.00V

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