pmg8 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Thu, 30/04/2020 - 02:10

Duration:

00:02:02

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	121.815 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	327.27 RPM	n_nom
Nominal tip speed ratio	9.78693	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.104448	ai
Inner-to-outer magnet radius	0.946767	kd
Flux density in airgap	0.558663 T	Bmax
Flux density on magnet surface	0.733804 T	Bmg
First harmonic of flux density in airgap	0.137644 T	Bp
Flux per pole (Calculated)	0.000293581 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	166.247 mm	dist_magnet_Rin
Magnet mass	720 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	4000 mm3	Vmag
Volume of all magnets	96000 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	751.679 mm	Dout
Average radius	365.706 mm	Ravg
Inner radius	355.706 mm	Rin
Outer radius	375.839 mm	Rout
Effective outer radius	375.706 mm	Rout_eff
Mass of rotor disks	69.8488 kgr	BackIronMass
Volume of rotor disks	8875.32 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.893195 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	3	q
Total number of coils in stator	9	coil_num
Number of turns per coil	113	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	4	No_wires_at_hand
Winding fill factor	0.46	kf
Copper wire cross-sectional area	8.04 mm2	sc
Copper wire cross-sectional area (Calculated)	7.89492 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	3.17131 mm	dc_theor
Coil leg width	117.341 mm	wc
Average length of coil turn	401.624 mm	lavg
Stator nominal temperature	32.9548 C°	tc_real
Stator surface area	8482.85 cm²	stator_surface_area
Heat coefficient	0.0592716	cq_real
Current density	2.94587 A	Jmax_real
Resistivity of copper at nominal temperature	1.76427E-8 Ohm.m	pt
Resistance of a single coil	0.0995883 Ohm	Rc
Phase resistance	0.298765 Ohm	Rphase
Phase inductance	0.00337501 H	Ls
Nagaoka constant	0.092855	Kn
Winding coefficient	0.95	kw
Volume of a single coil	801158 mm3	coil_volume
Weight of a single coil	3319.8 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	13.1474 mm	coil_hole_Rin_constr
Coil hole at Rout	27.1049 mm	coil_hole_Rout_constr
Coil mass for construction	33.198 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	13.7405 V	EMF_nom
Current at the nominal wind speed	23.6848 A	Iac_nom
Terminal voltage at the nominal wind speed	5.6452 V	V_term_line
Nominal frequency	32.727 Hz	fnom
Generator power (Calculated)	401.116 W	Pnom
Copper losses (Calculated)	502.792 W	Pcopper
Eddy current losses (Calculated)	9.17118 W	Peddy
Generator efficiency (Calculated)	0.41151	efficiency_real
AC Power at the rectifier (Calculated)	361.004 W	Pnom_rect
DC Power at the batteries (Calculated)	324.904 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)	61.6614 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	902.738 EUR	Totalcost
Total generator mass	108.952 kgr	TotalMass
Total generator volume	26.1822 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	83.6435 EUR	Magcost
Magnet shipping cost	5.7971 EUR	shippingcost
Copper mass	29.3585 kgr	mcu
Cost of copper	433.332 EUR	coppercost
Resin mass	9.02442 kgr	resinmass
Cost of resin	124.653 EUR	resincost
Resin volume	6635.6 cm3	ResinVolume
Total mass of one generator rotor	35.2844 kgr	TotalMassRotor
Cost of iron	85.914 EUR	ironcost
Surface area of moulds	1.10603 m2	woodS
Total cost of moulds	175.195 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6347.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:

8.50

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:

20mm

Magnet width:

20mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

1.00mm

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