5kw prelimary 1 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by josh manning 1 on Wed, 11/09/2024 - 08:45

Duration:

00:00:31

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	71.6561 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	95.5414 RPM	n_nom
Nominal tip speed ratio	5	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.800554	ai
Inner-to-outer magnet radius	0.881688	kd
Flux density in airgap	0.378299 T	Bmax
Flux density on magnet surface	0.580998 T	Bmg
First harmonic of flux density in airgap	0.370685 T	Bp
Flux per pole (Calculated)	0.000464969 Wb	Flux_pole
Magnets on a rotor disk	80	magnet_num
Distance between magnets	3.4119 mm	dist_magnet_Rin
Magnet mass	4800 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	4000 mm3	Vmag
Volume of all magnets	640000 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	676.474 mm	Dout
Average radius	318.089 mm	Ravg
Inner radius	298.089 mm	Rin
Outer radius	338.237 mm	Rout
Effective outer radius	338.089 mm	Rout_eff
Mass of rotor disks	56.5714 kgr	BackIronMass
Volume of rotor disks	7188.23 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.707414 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	20	q
Total number of coils in stator	60	coil_num
Number of turns per coil	91	Nc
Copper wire diameter	0.75 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	0.44 mm2	sc
Copper wire cross-sectional area (Calculated)	0.435273 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	0.44 mm²	sc_multi_wires
Copper wire diameter (Calculated)	0.74464 mm	dc_theor
Coil leg width	5.6 mm	wc
Average length of coil turn	137.584 mm	lavg
Stator nominal temperature	187.572 C°	tc_real
Stator surface area	924.564 cm²	stator_surface_area
Heat coefficient	0.614127	cq_real
Current density	7.91406 A	Jmax_real
Resistivity of copper at nominal temperature	2.74273E-8 Ohm.m	pt
Resistance of a single coil	0.780441 Ohm	Rc
Phase resistance	15.6088 Ohm	Rphase
Phase inductance	0.00814828 H	Ls
Nagaoka constant	0.337879	Kn
Winding coefficient	0.95	kw
Volume of a single coil	10016.1 mm3	coil_volume
Weight of a single coil	50.3316 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	20 mm	coil_hole_Rin_constr
Coil hole at Rout	20 mm	coil_hole_Rout_constr
Coil mass for construction	3.07023 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	171.067 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	228.089 V	EMF_nom
Current at the nominal wind speed	3.48219 A	Iac_nom
Terminal voltage at the nominal wind speed	179.62 V	V_term_line
Nominal frequency	63.6943 Hz	fnom
Generator power (Calculated)	1798.61 W	Pnom
Copper losses (Calculated)	567.8 W	Pcopper
Eddy current losses (Calculated)	5.28961 W	Peddy
Generator efficiency (Calculated)	0.748853	efficiency_real
AC Power at the rectifier (Calculated)	1708.68 W	Pnom_rect
DC Power at the batteries (Calculated)	1623.24 W	Pnom_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	6	No_bolts_hub
Mass of bearing hub	14290.7 g	BearingHubMass
Rotational losses (Calculated)	30.1185 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	891.075 EUR	Totalcost
Total generator mass	69.3375 kgr	TotalMass
Total generator volume	17.6112 dm3	TotalVolume
Blade rotor mass	81.9581 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	557.623 EUR	Magcost
Magnet shipping cost	38.6473 EUR	shippingcost
Copper mass	2.95495 kgr	mcu
Cost of copper	43.6151 EUR	coppercost
Resin mass	5.0112 kgr	resinmass
Cost of resin	69.2191 EUR	resincost
Resin volume	3684.7 cm3	ResinVolume
Total mass of one generator rotor	30.6857 kgr	TotalMassRotor
Cost of iron	69.5828 EUR	ironcost
Surface area of moulds	0.953502 m2	woodS
Total cost of moulds	151.035 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9437.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.50m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.00m/s

Nominal wind speed:

7.00m/s

Cut-in TSR:

8.75

Design TSR:

5.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

40mm

Magnet width:

20mm

Magnet thickness:

5mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

User defined

Winding fill factor:

0.55

Stator thickness:

User defined

Stator thickness:

13mm

Current density:

8.00A/mm2

System Inputs

System voltage:

400.00V

Nominal voltage:

400.00V

Transmission cable losses:

5.00%

Rectifier losses:

5.00%

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