8 pole micro scale generator | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by natashabashya on Mon, 10/05/2021 - 03:31

Duration:

00:00:02

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	390.127 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	700.637 RPM	n_nom
Nominal tip speed ratio	4.4	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	3 mm	hr
Magnet width-to-pole pitch ratio	0.385601	ai
Inner-to-outer magnet radius	0.664032	kd
Magnets on a rotor disk	8	magnet_num
Distance between magnets	16.0463 mm	dist_magnet_Rin
Magnet mass	252 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	2100 mm3	Vmag
Volume of all magnets	33600 mm3	VolumeMagnet
Remanent magnetic flux density	1.3 T	Br
Magnetic coercivity	1006580 A/m	Hc
Maximum Energy Product	342 KJ/m³	BHmax
Outer diameter	120 mm	Dout
Average radius	49.5294 mm	Ravg
Inner radius	39.5294 mm	Rin
Outer radius	60 mm	Rout
Effective outer radius	59.5294 mm	Rout_eff
Mass of rotor disks	0.534046 kgr	BackIronMass
Volume of rotor disks	67.8584 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	13 mm	tw
Number of phases	3	nphase
Number of coils per phase	2	q
Total number of coils in stator	6	coil_num
Number of turns per coil	45	Nc
Copper wire diameter	0.5 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	0.392699 mm2	sc
Copper wire diameter (Calculated)	0.707107 mm	dc_theor
Coil leg width	21 mm	wc
Average length of coil turn	135.94 mm	lavg
Stator nominal temperature	57.7 C°	tc_real
Stator surface area	342.569 cm²	stator_surface_area
Heat coefficient	0.200245	cq_real
Current density	45.8366 A	Jmax_real
Resistivity of copper at nominal temperature	1.92472E-8 Ohm.m	pt
Resistance of a single coil	0.299824 Ohm	Rc
Phase resistance	0.599648 Ohm	Rphase
Phase inductance	0.000138214 H	Ls
Nagaoka constant	0.240075	Kn
Volume of a single coil	37111.6 mm3	coil_volume
Weight of a single coil	22.4307 g	coil_weight_constr
Coil hole at Rin	15 mm	coil_hole_Rin_constr
Coil hole at Rout	15 mm	coil_hole_Rout_constr
Coil mass for construction	0.157015 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	6.84267 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	12.2889 V	EMF_nom
Current at the nominal wind speed	18 A	Iac_nom
Nominal frequency	46.7091 Hz	fnom

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

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	69.0606 EUR	Totalcost
Total generator mass	1.43423 kgr	TotalMass
Total generator volume	0.41846 dm3	TotalVolume
Blade rotor mass	0.412897 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	31.3866 EUR	Magcost
Magnet shipping cost	2.02899 EUR	shippingcost
Copper mass	0.128857 kgr	mcu
Cost of copper	1.90193 EUR	coppercost
Resin mass	0.519331 kgr	resinmass
Cost of resin	7.17346 EUR	resincost
Resin volume	381.861 cm3	ResinVolume
Total mass of one generator rotor	0.393023 kgr	TotalMassRotor
Cost of iron	0.656876 EUR	ironcost
Surface area of moulds	0.1764 m2	woodS
Total cost of moulds	27.9418 EUR	woodcost

Input parameters

Blade Rotor Inputs

Turbine radius:

0.60m

Cut-in wind speed:

2.80m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.75

Nominal TSR:

4.40

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

120.00mm

Magnetic material:

NdFeB N42

Number of generator poles:

Magnet length:

20mm

Magnet width:

15mm

Magnet thickness:

7mm

Rotor disk thickness:

3mm

Mechanical clearance:

2.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

0.55

Current at nominal wind speed:

18.00A

Stator thickness:

13mm

Number of turns per coil:

Copper wire diameter:

0.50mm

Number of wires at hand:

Coil leg width:

21mm

Stator nominal temperature:

57.70C°

System Inputs

System voltage:

16.00V

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

Simulation Radius:

Average radius

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