mico jennie | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by natashabashya on Sun, 16/05/2021 - 07:59

Duration:

00:00:01

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	417.994 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	0.484315	ai
Inner-to-outer magnet radius	0.595423	kd
Magnets on a rotor disk	8	magnet_num
Distance between magnets	8.1176 mm	dist_magnet_Rin
Magnet mass	360 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	3000 mm3	Vmag
Volume of all magnets	48000 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	100 mm	Dout
Average radius	39.4343 mm	Ravg
Inner radius	29.4343 mm	Rin
Outer radius	50 mm	Rout
Effective outer radius	49.4343 mm	Rout_eff
Mass of rotor disks	0.370865 kgr	BackIronMass
Volume of rotor disks	47.1239 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	6 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	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	0.19635 mm2	sc
Copper wire diameter (Calculated)	0.5 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	0.433865	cq_real
Current density	91.6732 A	Jmax_real
Resistivity of copper at nominal temperature	1.92472E-8 Ohm.m	pt
Resistance of a single coil	0.599648 Ohm	Rc
Phase resistance	1.1993 Ohm	Rphase
Phase inductance	0.000166407 H	Ls
Nagaoka constant	0.133406	Kn
Volume of a single coil	17128.4 mm3	coil_volume
Weight of a single coil	11.2153 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	0.0785074 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	2.566 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	4.30111 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	69.4587 EUR	Totalcost
Total generator mass	0.907146 kgr	TotalMass
Total generator volume	0.282743 dm3	TotalVolume
Blade rotor mass	0.412897 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	41.1626 EUR	Magcost
Magnet shipping cost	2.89855 EUR	shippingcost
Copper mass	0.0644286 kgr	mcu
Cost of copper	0.950966 EUR	coppercost
Resin mass	0.111853 kgr	resinmass
Cost of resin	1.54501 EUR	resincost
Resin volume	82.2448 cm3	ResinVolume
Total mass of one generator rotor	0.365433 kgr	TotalMassRotor
Cost of iron	0.456164 EUR	ironcost
Surface area of moulds	0.16 m2	woodS
Total cost of moulds	25.344 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-7088.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

0.60m

Cut-in wind speed:

3.00m/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:

100.00mm

Magnetic material:

NdFeB N42

Number of generator poles:

Magnet length:

20mm

Magnet width:

15mm

Magnet thickness:

10mm

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:

6mm

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:

6.00V

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