PMA-1.006 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Fri, 31/07/2020 - 18:19

Duration:

00:00:25

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)	313.186 RPM	n_nom
Nominal tip speed ratio	8.19504	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.516878	ai
Inner-to-outer magnet radius	0.662541	kd
Flux density in airgap	0.505845 T	Bmax
Flux density on magnet surface	0.561644 T	Bmg
First harmonic of flux density in airgap	0.4264 T	Bp
Flux per pole (Calculated)	0.00101764 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	16.2598 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	356.862 mm	Dout
Average radius	147.8 mm	Ravg
Inner radius	117.8 mm	Rin
Outer radius	178.431 mm	Rout
Effective outer radius	177.8 mm	Rout_eff
Mass of rotor disks	15.7433 kgr	BackIronMass
Volume of rotor disks	2000.42 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.898457 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 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	24	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	3	No_wires_at_hand
Winding fill factor	0.48	kf
Copper wire cross-sectional area	6.03 mm2	sc
Copper wire cross-sectional area (Calculated)	5.64549 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.68174 mm	dc_theor
Coil leg width	23.4242 mm	wc
Average length of coil turn	237.768 mm	lavg
Stator nominal temperature	44.0935 C°	tc_real
Stator surface area	1336.69 cm²	stator_surface_area
Heat coefficient	0.124826	cq_real
Current density	4.68117 A	Jmax_real
Resistivity of copper at nominal temperature	1.84401E-8 Ohm.m	pt
Resistance of a single coil	0.0174505 Ohm	Rc
Phase resistance	0.0698022 Ohm	Rphase
Phase inductance	0.000187931 H	Ls
Nagaoka constant	0.187566	Kn
Winding coefficient	0.95	kw
Volume of a single coil	72403.8 mm3	coil_volume
Weight of a single coil	333.258 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	14.3224 mm	coil_hole_Rin_constr
Coil hole at Rout	45.6211 mm	coil_hole_Rout_constr
Coil mass for construction	4.33236 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	6.415 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	17.2097 V	EMF_nom
Current at the nominal wind speed	28.2275 A	Iac_nom
Terminal voltage at the nominal wind speed	14.113 V	V_term_line
Nominal frequency	41.7582 Hz	fnom
Generator power (Calculated)	1195.12 W	Pnom
Copper losses (Calculated)	166.853 W	Pcopper
Eddy current losses (Calculated)	59.5556 W	Peddy
Generator efficiency (Calculated)	0.825617	efficiency_real
AC Power at the rectifier (Calculated)	1075.61 W	Pnom_rect
DC Power at the batteries (Calculated)	968.05 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)	26.0197 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	433.739 EUR	Totalcost
Total generator mass	24.6949 kgr	TotalMass
Total generator volume	4.70099 dm3	TotalVolume
Blade rotor mass	15.2925 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	3.69147 kgr	mcu
Cost of copper	54.4862 EUR	coppercost
Resin mass	3.10014 kgr	resinmass
Cost of resin	42.8219 EUR	resincost
Resin volume	2279.51 cm3	ResinVolume
Total mass of one generator rotor	8.95166 kgr	TotalMassRotor
Cost of iron	19.3643 EUR	ironcost
Surface area of moulds	0.431468 m2	woodS
Total cost of moulds	68.3446 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6492.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:

60mm

Magnet width:

30mm

Magnet thickness:

5mm

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:

15.00V

Nominal voltage:

30.00V

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