pmaa | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Mon, 27/04/2020 - 09:12

Duration:

00:01:04

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	114.65 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	234.754 RPM	n_nom
Nominal tip speed ratio	7.02026	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.206963	ai
Inner-to-outer magnet radius	0.928354	kd
Flux density in airgap	0.135818 T	Bmax
Flux density on magnet surface	0.167918 T	Bmg
First harmonic of flux density in airgap	0.0609462 T	Bp
Flux per pole (Calculated)	0.000167917 Wb	Flux_pole
Magnets on a rotor disk	28	magnet_num
Distance between magnets	91.3065 mm	dist_magnet_Rin
Magnet mass	2800 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	10000 mm3	Vmag
Volume of all magnets	560000 mm3	VolumeMagnet
Remanent magnetic flux density	0.39 T	Br
Magnetic coercivity	227950 A/m	Hc
Maximum Energy Product	30 KJ/m³	BHmax
Outer diameter	1116.88 mm	Dout
Average radius	538.301 mm	Ravg
Inner radius	518.301 mm	Rin
Outer radius	558.441 mm	Rout
Effective outer radius	558.301 mm	Rout_eff
Mass of rotor disks	123.367 kgr	BackIronMass
Volume of rotor disks	15675.6 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.328389 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	7	q
Total number of coils in stator	21	coil_num
Number of turns per coil	39	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	5	No_wires_at_hand
Winding fill factor	0.44	kf
Copper wire cross-sectional area	11.35 mm2	sc
Copper wire cross-sectional area (Calculated)	10.2408 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	3.61187 mm	dc_theor
Coil leg width	67.7389 mm	wc
Average length of coil turn	309.074 mm	lavg
Stator nominal temperature	30.3105 C°	tc_real
Stator surface area	8793.24 cm²	stator_surface_area
Heat coefficient	0.0418136	cq_real
Current density	2.70681 A	Jmax_real
Resistivity of copper at nominal temperature	1.74666E-8 Ohm.m	pt
Resistance of a single coil	0.0185498 Ohm	Rc
Phase resistance	0.129849 Ohm	Rphase
Phase inductance	0.000828354 H	Ls
Nagaoka constant	0.122168	Kn
Winding coefficient	0.95	kw
Volume of a single coil	314044 mm3	coil_volume
Weight of a single coil	1285.82 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	19.0966 mm	coil_hole_Rin_constr
Coil hole at Rout	31.0616 mm	coil_hole_Rout_constr
Coil mass for construction	28.288 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	10.5929 V	EMF_nom
Current at the nominal wind speed	30.7223 A	Iac_nom
Terminal voltage at the nominal wind speed	5.6452 V	V_term_line
Nominal frequency	54.7759 Hz	fnom
Generator power (Calculated)	520.301 W	Pnom
Copper losses (Calculated)	367.677 W	Pcopper
Eddy current losses (Calculated)	13.7877 W	Peddy
Generator efficiency (Calculated)	0.535234	efficiency_real
AC Power at the rectifier (Calculated)	468.271 W	Pnom_rect
DC Power at the batteries (Calculated)	421.444 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)	70.3342 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1077.87 EUR	Totalcost
Total generator mass	163.914 kgr	TotalMass
Total generator volume	55.8444 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	62.4044 EUR	Magcost
Magnet shipping cost	33.8164 EUR	shippingcost
Copper mass	25.685 kgr	mcu
Cost of copper	379.11 EUR	coppercost
Resin mass	12.0621 kgr	resinmass
Cost of resin	166.612 EUR	resincost
Resin volume	8869.18 cm3	ResinVolume
Total mass of one generator rotor	63.0836 kgr	TotalMassRotor
Cost of iron	151.742 EUR	ironcost
Surface area of moulds	2.00756 m2	woodS
Total cost of moulds	317.997 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6335.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.37

Cut-in wind speed:

3.00m/s

Nominal wind speed:

7.00m/s

Cut-in TSR:

8.00

Design TSR:

6.00

Air density:

1.225kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

40mm

Magnet width:

25mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

3.00A/mm2

System Inputs

System voltage:

12.00V

Nominal voltage:

12.00V

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