Final of 56v Hello less magnets | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by noor.samir on Wed, 03/04/2019 - 08:48

Duration:

00:00:42

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)	272.038 RPM	n_nom
Nominal tip speed ratio	4.27099	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	6 mm	hr
Magnet width-to-pole pitch ratio	0.292147	ai
Inner-to-outer magnet radius	0.678965	kd
Flux density in airgap	0.559385 T	Bmax
Flux density on magnet surface	0.734014 T	Bmg
First harmonic of flux density in airgap	0.351894 T	Bp
Flux per pole (Calculated)	0.000736667 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	35.3687 mm	dist_magnet_Rin
Magnet mass	1800 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	10000 mm3	Vmag
Volume of all magnets	240000 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	312.134 mm	Dout
Average radius	130.746 mm	Ravg
Inner radius	105.746 mm	Rin
Outer radius	156.067 mm	Rout
Effective outer radius	155.746 mm	Rout_eff
Mass of rotor disks	7.22652 kgr	BackIronMass
Volume of rotor disks	918.236 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.54983 T	SaturMAX
Is the magnet rotor disk saturated?	Yes	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	17 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	154	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.52	kf
Copper wire cross-sectional area	2.01 mm2	sc
Copper wire cross-sectional area (Calculated)	1.81488 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.52051 mm	dc_theor
Coil leg width	35.366 mm	wc
Average length of coil turn	238.262 mm	lavg
Stator nominal temperature	73.0052 C°	tc_real
Stator surface area	1516.74 cm²	stator_surface_area
Heat coefficient	0.259644	cq_real
Current density	5.41754 A	Jmax_real
Resistivity of copper at nominal temperature	2.0215E-8 Ohm.m	pt
Resistance of a single coil	0.369022 Ohm	Rc
Phase resistance	1.10707 Ohm	Rphase
Phase inductance	0.00470143 H	Ls
Nagaoka constant	0.197883	Kn
Winding coefficient	0.95	kw
Volume of a single coil	143248 mm3	coil_volume
Weight of a single coil	667.901 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	2.59293 mm	coil_hole_Rin_constr
Coil hole at Rout	37.4091 mm	coil_hole_Rout_constr
Coil mass for construction	6.67901 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	23.9493 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	39.0581 V	EMF_nom
Current at the nominal wind speed	10.8893 A	Iac_nom
Terminal voltage at the nominal wind speed	26.3443 V	V_term_line
Nominal frequency	27.2038 Hz	fnom
Generator power (Calculated)	860.608 W	Pnom
Copper losses (Calculated)	393.814 W	Pcopper
Eddy current losses (Calculated)	6.5081 W	Peddy
Generator efficiency (Calculated)	0.676914	efficiency_real
AC Power at the rectifier (Calculated)	774.548 W	Pnom_rect
DC Power at the batteries (Calculated)	697.093 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)	10.439 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	407.264 EUR	Totalcost
Total generator mass	18.1687 kgr	TotalMass
Total generator volume	3.9025 dm3	TotalVolume
Blade rotor mass	6.45151 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	207.122 EUR	Magcost
Magnet shipping cost	14.4928 EUR	shippingcost
Copper mass	5.93404 kgr	mcu
Cost of copper	87.5865 EUR	coppercost
Resin mass	3.20814 kgr	resinmass
Cost of resin	44.3137 EUR	resincost
Resin volume	2358.92 cm3	ResinVolume
Total mass of one generator rotor	4.51326 kgr	TotalMassRotor
Cost of iron	8.88862 EUR	ironcost
Surface area of moulds	0.374709 m2	woodS
Total cost of moulds	59.3538 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-6109.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.50m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.00m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.75

Design TSR:

6.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

50mm

Magnet width:

20mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

6mm

Mechanical clearance:

1.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

Calculated

Stator thickness:

Calculated

Current density:

6.00A/mm2

System Inputs

System voltage:

56.00V

Nominal voltage:

56.00V

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:

true

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