PMA-1.005 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Fri, 31/07/2020 - 18:17

Duration:

00:00:32

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)	313.042 RPM	n_nom
Nominal tip speed ratio	8.19126	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.487636	ai
Inner-to-outer magnet radius	0.678565	kd
Flux density in airgap	0.592489 T	Bmax
Flux density on magnet surface	0.721984 T	Bmg
First harmonic of flux density in airgap	0.503331 T	Bp
Flux per pole (Calculated)	0.000907848 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	16.4503 mm	dist_magnet_Rin
Magnet mass	3000 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	12500 mm3	Vmag
Volume of all magnets	400000 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	312.108 mm	Dout
Average radius	130.552 mm	Ravg
Inner radius	105.552 mm	Rin
Outer radius	156.054 mm	Rout
Effective outer radius	155.552 mm	Rout_eff
Mass of rotor disks	12.0421 kgr	BackIronMass
Volume of rotor disks	1530.13 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.07738 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	16 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	27	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)	5.62769 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.6775 mm	dc_theor
Coil leg width	21.4112 mm	wc
Average length of coil turn	203.554 mm	lavg
Stator nominal temperature	49.9704 C°	tc_real
Stator surface area	1046 cm²	stator_surface_area
Heat coefficient	0.155545	cq_real
Current density	4.66641 A	Jmax_real
Resistivity of copper at nominal temperature	1.8788E-8 Ohm.m	pt
Resistance of a single coil	0.017124 Ohm	Rc
Phase resistance	0.0684961 Ohm	Rphase
Phase inductance	0.000181616 H	Ls
Nagaoka constant	0.240507	Kn
Winding coefficient	0.95	kw
Volume of a single coil	69733.4 mm3	coil_volume
Weight of a single coil	318.223 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	11.9383 mm	coil_hole_Rin_constr
Coil hole at Rout	38.0293 mm	coil_hole_Rout_constr
Coil mass for construction	4.13691 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	6.415 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	17.2642 V	EMF_nom
Current at the nominal wind speed	28.1384 A	Iac_nom
Terminal voltage at the nominal wind speed	14.113 V	V_term_line
Nominal frequency	41.7389 Hz	fnom
Generator power (Calculated)	1191.35 W	Pnom
Copper losses (Calculated)	162.7 W	Pcopper
Eddy current losses (Calculated)	75.8063 W	Peddy
Generator efficiency (Calculated)	0.81932	efficiency_real
AC Power at the rectifier (Calculated)	1072.22 W	Pnom_rect
DC Power at the batteries (Calculated)	964.997 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)	24.2163 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	509.826 EUR	Totalcost
Total generator mass	21.3795 kgr	TotalMass
Total generator volume	4.59039 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	344.761 EUR	Magcost
Magnet shipping cost	24.1546 EUR	shippingcost
Copper mass	3.55532 kgr	mcu
Cost of copper	52.4766 EUR	coppercost
Resin mass	2.78204 kgr	resinmass
Cost of resin	38.4281 EUR	resincost
Resin volume	2045.62 cm3	ResinVolume
Total mass of one generator rotor	7.52107 kgr	TotalMassRotor
Cost of iron	14.8118 EUR	ironcost
Surface area of moulds	0.374676 m2	woodS
Total cost of moulds	59.3486 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6490.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:

50mm

Magnet width:

25mm

Magnet thickness:

10mm

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