PMA-OPT-2 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Sat, 25/04/2020 - 13:58

Duration:

00:00:41

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)	593.641 RPM	n_nom
Nominal tip speed ratio	17.7527	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.415167	ai
Inner-to-outer magnet radius	0.861278	kd
Flux density in airgap	0.0359559 T	Bmax
Flux density on magnet surface	0.120922 T	Bmg
First harmonic of flux density in airgap	0.0317093 T	Bp
Flux per pole (Calculated)	0.000121535 Wb	Flux_pole
Magnets on a rotor disk	28	magnet_num
Distance between magnets	30.7287 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	577.234 mm	Dout
Average radius	268.346 mm	Ravg
Inner radius	248.346 mm	Rin
Outer radius	288.617 mm	Rout
Effective outer radius	288.346 mm	Rout_eff
Mass of rotor disks	32.9525 kgr	BackIronMass
Volume of rotor disks	4187.1 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.261675 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	34 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	155	Nc
Copper wire diameter	1.4 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.57	kf
Copper wire cross-sectional area	3.08 mm2	sc
Copper wire cross-sectional area (Calculated)	3.05361 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.54 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.9723 mm	dc_theor
Coil leg width	24.6336 mm	wc
Average length of coil turn	207.35 mm	lavg
Stator nominal temperature	85.0669 C°	tc_real
Stator surface area	2145.27 cm²	stator_surface_area
Heat coefficient	0.306959	cq_real
Current density	3.96573 A	Jmax_real
Resistivity of copper at nominal temperature	2.01423E-8 Ohm.m	pt
Resistance of a single coil	0.210181 Ohm	Rc
Phase resistance	1.47127 Ohm	Rphase
Phase inductance	0.00781554 H	Ls
Nagaoka constant	0.36751	Kn
Winding coefficient	0.328487	kw
Volume of a single coil	173664 mm3	coil_volume
Weight of a single coil	896.378 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	25 mm	coil_hole_Rin_constr
Coil hole at Rout	25 mm	coil_hole_Rout_constr
Coil mass for construction	19.7203 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	26.6438 V	EMF_nom
Current at the nominal wind speed	12.2145 A	Iac_nom
Terminal voltage at the nominal wind speed	5.6452 V	V_term_line
Nominal frequency	138.516 Hz	fnom
Generator power (Calculated)	206.859 W	Pnom
Copper losses (Calculated)	658.509 W	Pcopper
Eddy current losses (Calculated)	7.31352 W	Peddy
Generator efficiency (Calculated)	0.219318	efficiency_real
AC Power at the rectifier (Calculated)	186.173 W	Pnom_rect
DC Power at the batteries (Calculated)	167.556 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)	70.512 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	666.07 EUR	Totalcost
Total generator mass	66.4222 kgr	TotalMass
Total generator volume	17.2718 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	18.5841 kgr	mcu
Cost of copper	274.302 EUR	coppercost
Resin mass	12.0856 kgr	resinmass
Cost of resin	166.938 EUR	resincost
Resin volume	8886.49 cm3	ResinVolume
Total mass of one generator rotor	17.8762 kgr	TotalMassRotor
Cost of iron	40.5315 EUR	ironcost
Surface area of moulds	0.769539 m2	woodS
Total cost of moulds	121.895 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6316.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:

6.50

Air density:

1.225kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Single Rotor with metal disk

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:

Rectangular

Winding fill factor:

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