PMA-1.003 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by AHMEDNA8 on Fri, 31/07/2020 - 17:48

Duration:

00:00:06

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)	824.175 RPM	n_nom
Nominal tip speed ratio	21.5659	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.884884	ai
Inner-to-outer magnet radius	0.515504	kd
Flux density in airgap	0.695788 T	Bmax
Flux density on magnet surface	0.809419 T	Bmg
First harmonic of flux density in airgap	0.682511 T	Bp
Flux per pole (Calculated)	0.000942183 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	-5.7797 mm	dist_magnet_Rin
Magnet mass	3588 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	14950 mm3	Vmag
Volume of all magnets	478400 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	191.527 mm	Dout
Average radius	71.944 mm	Ravg
Inner radius	48.944 mm	Rin
Outer radius	95.7633 mm	Rout
Effective outer radius	94.944 mm	Rout_eff
Mass of rotor disks	4.53475 kgr	BackIronMass
Volume of rotor disks	576.207 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	19 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	21	Nc
Copper wire diameter	1.9 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.52	kf
Copper wire cross-sectional area	2.83 mm2	sc
Copper wire cross-sectional area (Calculated)	2.6481 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.83 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.83668 mm	dc_theor
Coil leg width	6.07533 mm	wc
Average length of coil turn	151.963 mm	lavg
Stator nominal temperature	59.6487 C°	tc_real
Stator surface area	221.575 cm²	stator_surface_area
Heat coefficient	0.201972	cq_real
Current density	4.67863 A	Jmax_real
Resistivity of copper at nominal temperature	1.88647E-8 Ohm.m	pt
Resistance of a single coil	0.0212726 Ohm	Rc
Phase resistance	0.0850905 Ohm	Rphase
Phase inductance	8.59447E-5 H	Ls
Nagaoka constant	0.400863	Kn
Winding coefficient	0.95	kw
Volume of a single coil	17541.3 mm3	coil_volume
Weight of a single coil	88.4282 g	coil_weight_constr
Coil hole at Ravg	25 mm	coil_hole_Ravg
Coil hole at Rin	12.9384 mm	coil_hole_Rin_constr
Coil hole at Rout	36.827 mm	coil_hole_Rout_constr
Coil mass for construction	1.14957 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	5.132 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	36.6894 V	EMF_nom
Current at the nominal wind speed	13.2405 A	Iac_nom
Terminal voltage at the nominal wind speed	31.519 V	V_term_line
Nominal frequency	109.89 Hz	fnom
Generator power (Calculated)	1251.99 W	Pnom
Copper losses (Calculated)	44.752 W	Pcopper
Eddy current losses (Calculated)	152.453 W	Peddy
Generator efficiency (Calculated)	0.8338	efficiency_real
AC Power at the rectifier (Calculated)	1126.79 W	Pnom_rect
DC Power at the batteries (Calculated)	1014.11 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)	52.3511 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	490.05 EUR	Totalcost
Total generator mass	10.5333 kgr	TotalMass
Total generator volume	1.98791 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	411.988 EUR	Magcost
Magnet shipping cost	28.8889 EUR	shippingcost
Copper mass	0.968865 kgr	mcu
Cost of copper	14.3005 EUR	coppercost
Resin mass	1.44173 kgr	resinmass
Cost of resin	19.9145 EUR	resincost
Resin volume	1060.1 cm3	ResinVolume
Total mass of one generator rotor	4.06137 kgr	TotalMassRotor
Cost of iron	5.57774 EUR	ironcost
Surface area of moulds	0.241598 m2	woodS
Total cost of moulds	38.2692 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6487.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:

46mm

Magnet width:

25mm

Magnet thickness:

13mm

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:

12.00V

Nominal voltage:

67.00V

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