pmaa | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Mon, 27/04/2020 - 09:06

Duration:

00:00:44

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)	223.449 RPM	n_nom
Nominal tip speed ratio	7.7959	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.244899	ai
Inner-to-outer magnet radius	0.908241	kd
Flux density in airgap	0.511967 T	Bmax
Flux density on magnet surface	0.711505 T	Bmg
First harmonic of flux density in airgap	0.28763 T	Bp
Flux per pole (Calculated)	0.000285073 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	57.7395 mm	dist_magnet_Rin
Magnet mass	960 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	4000 mm3	Vmag
Volume of all magnets	128000 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	436.382 mm	Dout
Average radius	207.962 mm	Ravg
Inner radius	197.962 mm	Rin
Outer radius	218.191 mm	Rout
Effective outer radius	217.962 mm	Rout_eff
Mass of rotor disks	18.833 kgr	BackIronMass
Volume of rotor disks	2393.01 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.11363 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	17 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	70	Nc
Copper wire diameter	1.5 mm	dc
Number of wires at hand	3	No_wires_at_hand
Winding fill factor	0.5	kf
Copper wire cross-sectional area	5.31 mm2	sc
Copper wire cross-sectional area (Calculated)	5.10705 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.77 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.55065 mm	dc_theor
Coil leg width	44.1667 mm	wc
Average length of coil turn	195.586 mm	lavg
Stator nominal temperature	42.0301 C°	tc_real
Stator surface area	2073.21 cm²	stator_surface_area
Heat coefficient	0.113486	cq_real
Current density	3.84712 A	Jmax_real
Resistivity of copper at nominal temperature	1.82224E-8 Ohm.m	pt
Resistance of a single coil	0.0469835 Ohm	Rc
Phase resistance	0.187934 Ohm	Rphase
Phase inductance	0.000834619 H	Ls
Nagaoka constant	0.189238	Kn
Winding coefficient	0.95	kw
Volume of a single coil	146852 mm3	coil_volume
Weight of a single coil	668.5 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	14.8157 mm	coil_hole_Rin_constr
Coil hole at Rout	25.277 mm	coil_hole_Rout_constr
Coil mass for construction	8.6905 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	10.0323 V	EMF_nom
Current at the nominal wind speed	20.4282 A	Iac_nom
Terminal voltage at the nominal wind speed	5.6452 V	V_term_line
Nominal frequency	29.7932 Hz	fnom
Generator power (Calculated)	345.964 W	Pnom
Copper losses (Calculated)	235.281 W	Pcopper
Eddy current losses (Calculated)	11.1063 W	Peddy
Generator efficiency (Calculated)	0.565522	efficiency_real
AC Power at the rectifier (Calculated)	311.368 W	Pnom_rect
DC Power at the batteries (Calculated)	280.231 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)	19.4088 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	387.288 EUR	Totalcost
Total generator mass	31.327 kgr	TotalMass
Total generator volume	8.52509 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	111.525 EUR	Magcost
Magnet shipping cost	7.72947 EUR	shippingcost
Copper mass	7.79917 kgr	mcu
Cost of copper	115.116 EUR	coppercost
Resin mass	3.73487 kgr	resinmass
Cost of resin	51.5895 EUR	resincost
Resin volume	2746.23 cm3	ResinVolume
Total mass of one generator rotor	9.89649 kgr	TotalMassRotor
Cost of iron	23.1646 EUR	ironcost
Surface area of moulds	0.542259 m2	woodS
Total cost of moulds	85.8938 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6332.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.37

Cut-in wind speed:

3.00m/s

Nominal wind speed:

6.00m/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:

NdFeB N52

Number of generator poles:

Magnet length:

20mm

Magnet width:

20mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

4.00A/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