PMA-OPT-1 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Fri, 24/04/2020 - 15:38

Duration:

00:01:20

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	133.758 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	439.826 RPM	n_nom
Nominal tip speed ratio	9.20703	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.0839347	ai
Inner-to-outer magnet radius	0.951751	kd
Flux density in airgap	0.446192 T	Bmax
Flux density on magnet surface	0.649747 T	Bmg
First harmonic of flux density in airgap	0.0906999 T	Bp
Flux per pole (Calculated)	0.000389751 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	212.39 mm	dist_magnet_Rin
Magnet mass	1152 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	4800 mm3	Vmag
Volume of all magnets	153600 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	1243.71 mm	Dout
Average radius	606.776 mm	Ravg
Inner radius	591.776 mm	Rin
Outer radius	621.857 mm	Rout
Effective outer radius	621.776 mm	Rout_eff
Mass of rotor disks	152.977 kgr	BackIronMass
Volume of rotor disks	19438 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.977501 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	44	Nc
Copper wire diameter	1.8 mm	dc
Number of wires at hand	8	No_wires_at_hand
Winding fill factor	0.38	kf
Copper wire cross-sectional area	20.32 mm2	sc
Copper wire cross-sectional area (Calculated)	18.6366 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.54 mm²	sc_multi_wires
Copper wire diameter (Calculated)	4.87246 mm	dc_theor
Coil leg width	148.523 mm	wc
Average length of coil turn	509.503 mm	lavg
Stator nominal temperature	30.0071 C°	tc_real
Stator surface area	18161.5 cm²	stator_surface_area
Heat coefficient	0.0397511	cq_real
Current density	2.75146 A	Jmax_real
Resistivity of copper at nominal temperature	1.74449E-8 Ohm.m	pt
Resistance of a single coil	0.0192462 Ohm	Rc
Phase resistance	0.0769847 Ohm	Rphase
Phase inductance	0.000900998 H	Ls
Nagaoka constant	0.0717109	Kn
Winding coefficient	0.95	kw
Volume of a single coil	1210770 mm3	coil_volume
Weight of a single coil	4257.61 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	12.3069 mm	coil_hole_Rin_constr
Coil hole at Rout	28.0127 mm	coil_hole_Rout_constr
Coil mass for construction	55.3489 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	16.9703 V	EMF_nom
Current at the nominal wind speed	55.9097 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	58.6435 Hz	fnom
Generator power (Calculated)	1893.73 W	Pnom
Copper losses (Calculated)	721.939 W	Pcopper
Eddy current losses (Calculated)	56.1168 W	Peddy
Generator efficiency (Calculated)	0.669598	efficiency_real
AC Power at the rectifier (Calculated)	1704.36 W	Pnom_rect
DC Power at the batteries (Calculated)	1533.92 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)	156.372 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1658.82 EUR	Totalcost
Total generator mass	220.257 kgr	TotalMass
Total generator volume	65.6031 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	133.476 EUR	Magcost
Magnet shipping cost	9.27536 EUR	shippingcost
Copper mass	48.8699 kgr	mcu
Cost of copper	721.32 EUR	coppercost
Resin mass	17.2582 kgr	resinmass
Cost of resin	238.386 EUR	resincost
Resin volume	12689.9 cm3	ResinVolume
Total mass of one generator rotor	77.0644 kgr	TotalMassRotor
Cost of iron	188.161 EUR	ironcost
Surface area of moulds	2.38305 m2	woodS
Total cost of moulds	377.475 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6287.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Aerodynamic coefficient:

0.37

Cut-in wind speed:

3.50m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.00

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:

30mm

Magnet width:

20mm

Magnet thickness:

8mm

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:

24.00V

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:

true

Simulation step:

Current step:

RPM Step:

Mesh size:

Automesh

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³