3m N50 50.8x25.4x12.7 48V Chennai | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Kostas on Fri, 07/12/2018 - 05:40

Duration:

00:00:34

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	167.197 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	262.035 RPM	n_nom
Nominal tip speed ratio	4.11396	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.377832	ai
Inner-to-outer magnet radius	0.664186	kd
Flux density in airgap	0.675293 T	Bmax
Flux density on magnet surface	0.79605 T	Bmg
First harmonic of flux density in airgap	0.492309 T	Bp
Flux per pole (Calculated)	0.00102132 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	27.8152 mm	dist_magnet_Rin
Magnet mass	2983.5 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	16575 mm3	Vmag
Volume of all magnets	397800 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	304.766 mm	Dout
Average radius	126.37 mm	Ravg
Inner radius	100.87 mm	Rin
Outer radius	152.383 mm	Rout
Effective outer radius	151.87 mm	Rout_eff
Mass of rotor disks	11.4823 kgr	BackIronMass
Volume of rotor disks	1459 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.2177 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 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	95	Nc
Copper wire diameter	1.5 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.57	kf
Copper wire cross-sectional area	1.77 mm2	sc
Copper wire cross-sectional area (Calculated)	1.5736 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.77 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.41583 mm	dc_theor
Coil leg width	22.6923 mm	wc
Average length of coil turn	223.254 mm	lavg
Stator nominal temperature	83.4987 C°	tc_real
Stator surface area	911.906 cm²	stator_surface_area
Heat coefficient	0.301022	cq_real
Current density	6.22327 A	Jmax_real
Resistivity of copper at nominal temperature	2.09784E-8 Ohm.m	pt
Resistance of a single coil	0.251375 Ohm	Rc
Phase resistance	0.754124 Ohm	Rphase
Phase inductance	0.0020233 H	Ls
Nagaoka constant	0.194911	Kn
Winding coefficient	0.95	kw
Volume of a single coil	65859.9 mm3	coil_volume
Weight of a single coil	342.674 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	3.42674 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	20.528 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	32.1763 V	EMF_nom
Current at the nominal wind speed	11.0152 A	Iac_nom
Terminal voltage at the nominal wind speed	23.1967 V	V_term_line
Nominal frequency	26.2035 Hz	fnom
Generator power (Calculated)	766.546 W	Pnom
Copper losses (Calculated)	274.503 W	Pcopper
Eddy current losses (Calculated)	5.38726 W	Peddy
Generator efficiency (Calculated)	0.723606	efficiency_real
AC Power at the rectifier (Calculated)	666.895 W	Pnom_rect
DC Power at the batteries (Calculated)	600.206 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	4	No_bolts_hub
Mass of bearing hub	3708.65 g	BearingHubMass
Rotational losses (Calculated)	12.9057 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	490.027 EUR	Totalcost
Total generator mass	19.7273 kgr	TotalMass
Total generator volume	4.74174 dm3	TotalVolume
Blade rotor mass	6.45151 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	342.433 EUR	Magcost
Magnet shipping cost	24.0217 EUR	shippingcost
Copper mass	3.02048 kgr	mcu
Cost of copper	44.5823 EUR	coppercost
Resin mass	2.24099 kgr	resinmass
Cost of resin	30.9546 EUR	resincost
Resin volume	1647.79 cm3	ResinVolume
Total mass of one generator rotor	7.2329 kgr	TotalMassRotor
Cost of iron	14.1232 EUR	ironcost
Surface area of moulds	0.365742 m2	woodS
Total cost of moulds	57.9336 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-5860.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.50m

Aerodynamic coefficient:

0.25

Cut-in wind speed:

3.00m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.75

Design TSR:

7.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

51mm

Magnet width:

25mm

Magnet thickness:

13mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

Calculated

Stator thickness:

User defined

Stator thickness:

13mm

Current density:

7.00A/mm2

System Inputs

System voltage:

48.00V

Nominal voltage:

48.00V

Transmission cable losses:

13.00%

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