pma | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Sun, 05/07/2020 - 21:17

Duration:

00:00:45

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)	111.23 RPM	n_nom
Nominal tip speed ratio	5.82102	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.28949	ai
Inner-to-outer magnet radius	0.916483	kd
Flux density in airgap	0.683187 T	Bmax
Flux density on magnet surface	0.75082 T	Bmg
First harmonic of flux density in airgap	0.373926 T	Bp
Flux per pole (Calculated)	0.00103637 Wb	Flux_pole
Magnets on a rotor disk	32	magnet_num
Distance between magnets	69.1145 mm	dist_magnet_Rin
Magnet mass	6624 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	883200 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	1101.98 mm	Dout
Average radius	527.786 mm	Ravg
Inner radius	504.786 mm	Rin
Outer radius	550.99 mm	Rout
Effective outer radius	550.786 mm	Rout_eff
Mass of rotor disks	150.121 kgr	BackIronMass
Volume of rotor disks	19075.1 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.2926 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	8	q
Total number of coils in stator	24	coil_num
Number of turns per coil	88	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.5	kf
Copper wire cross-sectional area	4.54 mm2	sc
Copper wire cross-sectional area (Calculated)	4.05552 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.27294 mm	dc_theor
Coil leg width	53.802 mm	wc
Average length of coil turn	289.057 mm	lavg
Stator nominal temperature	61.4206 C°	tc_real
Stator surface area	7464.88 cm²	stator_surface_area
Heat coefficient	0.210006	cq_real
Current density	5.35972 A	Jmax_real
Resistivity of copper at nominal temperature	1.96896E-8 Ohm.m	pt
Resistance of a single coil	0.110318 Ohm	Rc
Phase resistance	0.882546 Ohm	Rphase
Phase inductance	0.00482814 H	Ls
Nagaoka constant	0.13991	Kn
Winding coefficient	0.95	kw
Volume of a single coil	233277 mm3	coil_volume
Weight of a single coil	1055.89 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	24.0464 mm	coil_hole_Rin_constr
Coil hole at Rout	36.085 mm	coil_hole_Rout_constr
Coil mass for construction	26.3973 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	51.32 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	91.2949 V	EMF_nom
Current at the nominal wind speed	24.3331 A	Iac_nom
Terminal voltage at the nominal wind speed	67.3575 V	V_term_line
Nominal frequency	29.6612 Hz	fnom
Generator power (Calculated)	4917.06 W	Pnom
Copper losses (Calculated)	1567.67 W	Pcopper
Eddy current losses (Calculated)	62.7883 W	Peddy
Generator efficiency (Calculated)	0.743184	efficiency_real
AC Power at the rectifier (Calculated)	4671.21 W	Pnom_rect
DC Power at the batteries (Calculated)	4437.65 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)	68.6853 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1786.58 EUR	Totalcost
Total generator mass	193.396 kgr	TotalMass
Total generator volume	55.3179 dm3	TotalVolume
Blade rotor mass	122.34 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	760.865 EUR	Magcost
Magnet shipping cost	53.3333 EUR	shippingcost
Copper mass	24.7782 kgr	mcu
Cost of copper	365.727 EUR	coppercost
Resin mass	11.8723 kgr	resinmass
Cost of resin	163.991 EUR	resincost
Resin volume	8729.66 cm3	ResinVolume
Total mass of one generator rotor	78.3727 kgr	TotalMassRotor
Cost of iron	184.649 EUR	ironcost
Surface area of moulds	1.96555 m2	woodS
Total cost of moulds	311.343 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6454.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

4.00m

Aerodynamic coefficient:

0.42

Cut-in wind speed:

3.00m/s

Nominal wind speed:

8.00m/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:

46mm

Magnet width:

30mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

1.50mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

6.00A/mm2

System Inputs

System voltage:

120.00V

Nominal voltage:

150.00V

Transmission cable losses:

5.00%

Rectifier losses:

5.00%

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