pma8 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Tue, 16/06/2020 - 20:02

Duration:

00:00:36

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	62.699 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	411.608 RPM	n_nom
Nominal tip speed ratio	28.7211	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.34344	ai
Inner-to-outer magnet radius	0.783514	kd
Flux density in airgap	0.626449 T	Bmax
Flux density on magnet surface	0.711958 T	Bmg
First harmonic of flux density in airgap	0.40184 T	Bp
Flux per pole (Calculated)	0.000803441 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	38.9572 mm	dist_magnet_Rin
Magnet mass	2160 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	9000 mm3	Vmag
Volume of all magnets	288000 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	416.482 mm	Dout
Average radius	185.366 mm	Ravg
Inner radius	162.866 mm	Rin
Outer radius	208.241 mm	Rout
Effective outer radius	207.866 mm	Rout_eff
Mass of rotor disks	21.4431 kgr	BackIronMass
Volume of rotor disks	2724.66 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.00921 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	15 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	75	Nc
Copper wire diameter	1.5 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.5	kf
Copper wire cross-sectional area	3.54 mm2	sc
Copper wire cross-sectional area (Calculated)	3.17623 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.77 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.0115 mm	dc_theor
Coil leg width	35.754 mm	wc
Average length of coil turn	232.949 mm	lavg
Stator nominal temperature	46.7456 C°	tc_real
Stator surface area	1998.92 cm²	stator_surface_area
Heat coefficient	0.13896	cq_real
Current density	4.4862 A	Jmax_real
Resistivity of copper at nominal temperature	1.85962E-8 Ohm.m	pt
Resistance of a single coil	0.0917788 Ohm	Rc
Phase resistance	0.367115 Ohm	Rphase
Phase inductance	0.00147051 H	Ls
Nagaoka constant	0.180658	Kn
Winding coefficient	0.95	kw
Volume of a single coil	124933 mm3	coil_volume
Weight of a single coil	567.664 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	13.2646 mm	coil_hole_Rin_constr
Coil hole at Rout	36.782 mm	coil_hole_Rout_constr
Coil mass for construction	7.37964 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	8.55334 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	55.8041 V	EMF_nom
Current at the nominal wind speed	15.8811 A	Iac_nom
Terminal voltage at the nominal wind speed	45.1616 V	V_term_line
Nominal frequency	54.8811 Hz	fnom
Generator power (Calculated)	2151.66 W	Pnom
Copper losses (Calculated)	277.771 W	Pcopper
Eddy current losses (Calculated)	67.2088 W	Peddy
Generator efficiency (Calculated)	0.81465	efficiency_real
AC Power at the rectifier (Calculated)	1936.49 W	Pnom_rect
DC Power at the batteries (Calculated)	1742.84 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	8	No_bolts_hub
Mass of bearing hub	29669.2 g	BearingHubMass
Rotational losses (Calculated)	144.567 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	507.949 EUR	Totalcost
Total generator mass	34.1189 kgr	TotalMass
Total generator volume	7.16586 dm3	TotalVolume
Blade rotor mass	122.34 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	248.723 EUR	Magcost
Magnet shipping cost	17.3913 EUR	shippingcost
Copper mass	6.63504 kgr	mcu
Cost of copper	97.9332 EUR	coppercost
Resin mass	3.88076 kgr	resinmass
Cost of resin	53.6045 EUR	resincost
Resin volume	2853.5 cm3	ResinVolume
Total mass of one generator rotor	11.8015 kgr	TotalMassRotor
Cost of iron	26.375 EUR	ironcost
Surface area of moulds	0.513347 m2	woodS
Total cost of moulds	81.3141 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6418.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

4.00m

Aerodynamic coefficient:

0.40

Cut-in wind speed:

3.00m/s

Nominal wind speed:

6.00m/s

Cut-in TSR:

8.75

Design TSR:

7.00

Air density:

1.225kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

45mm

Magnet width:

25mm

Magnet thickness:

8mm

Rotor disk thickness:

Calculated

Mechanical clearance:

0.80mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

5.00A/mm2

System Inputs

System voltage:

20.00V

Nominal voltage:

96.00V

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