PMA-1.001 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Fri, 31/07/2020 - 17:44

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)	988.553 RPM	n_nom
Nominal tip speed ratio	25.8671	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.789972	ai
Inner-to-outer magnet radius	0.44871	kd
Flux density in airgap	0.750152 T	Bmax
Flux density on magnet surface	0.835635 T	Bmg
First harmonic of flux density in airgap	0.69079 T	Bp
Flux per pole (Calculated)	0.000974215 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	-5.3961 mm	dist_magnet_Rin
Magnet mass	2691 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	14950 mm3	Vmag
Volume of all magnets	358800 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	168.744 mm	Dout
Average radius	60.4407 mm	Ravg
Inner radius	37.4407 mm	Rin
Outer radius	84.3718 mm	Rout
Effective outer radius	83.4407 mm	Rout_eff
Mass of rotor disks	3.52005 kgr	BackIronMass
Volume of rotor disks	447.275 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	18 mm	tw
Number of phases	3	nphase
Number of coils per phase	3	q
Total number of coils in stator	9	coil_num
Number of turns per coil	36	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	2.27 mm2	sc
Copper wire cross-sectional area (Calculated)	2.21427 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.6795 mm	dc_theor
Coil leg width	8.33709 mm	wc
Average length of coil turn	160.708 mm	lavg
Stator nominal temperature	63.2438 C°	tc_real
Stator surface area	241.171 cm²	stator_surface_area
Heat coefficient	0.21814	cq_real
Current density	4.87724 A	Jmax_real
Resistivity of copper at nominal temperature	1.87113E-8 Ohm.m	pt
Resistance of a single coil	0.0476889 Ohm	Rc
Phase resistance	0.143067 Ohm	Rphase
Phase inductance	0.000201232 H	Ls
Nagaoka constant	0.360719	Kn
Winding coefficient	0.95	kw
Volume of a single coil	24117.1 mm3	coil_volume
Weight of a single coil	123.932 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	8.94296 mm	coil_hole_Rin_constr
Coil hole at Rout	40.6648 mm	coil_hole_Rout_constr
Coil mass for construction	1.23932 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	43.878 V	EMF_nom
Current at the nominal wind speed	11.0713 A	Iac_nom
Terminal voltage at the nominal wind speed	37.6347 V	V_term_line
Nominal frequency	98.8553 Hz	fnom
Generator power (Calculated)	1250 W	Pnom
Copper losses (Calculated)	52.6089 W	Pcopper
Eddy current losses (Calculated)	114.544 W	Peddy
Generator efficiency (Calculated)	0.846788	efficiency_real
AC Power at the rectifier (Calculated)	1125 W	Pnom_rect
DC Power at the batteries (Calculated)	1012.5 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)	59.0126 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	379.533 EUR	Totalcost
Total generator mass	8.41249 kgr	TotalMass
Total generator volume	1.49837 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	308.991 EUR	Magcost
Magnet shipping cost	21.6667 EUR	shippingcost
Copper mass	1.05669 kgr	mcu
Cost of copper	15.5967 EUR	coppercost
Resin mass	1.14475 kgr	resinmass
Cost of resin	15.8123 EUR	resincost
Resin volume	841.73 cm3	ResinVolume
Total mass of one generator rotor	3.10553 kgr	TotalMassRotor
Cost of iron	4.32967 EUR	ironcost
Surface area of moulds	0.219721 m2	woodS
Total cost of moulds	34.8037 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6485.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:

1.50mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

User defined

Winding fill factor:

0.55

Stator thickness:

Calculated

Current density:

5.00A/mm2

System Inputs

System voltage:

12.00V

Nominal voltage:

80.00V

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