3F 24V v0.6 (only for controller reference, unfinished design) | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Jonathan_purese... on Tue, 16/02/2021 - 12:10

Duration:

00:06:28

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	156.688 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	382.166 RPM	n_nom
Nominal tip speed ratio	5	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	135 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	24 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	2.58476 m/s	cutin_Vw
Mechanical power (Torque)	1586.99 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.767837	ai
Inner-to-outer magnet radius	0.625009	kd
Flux density in airgap	0.232259 T	Bmax
Flux density on magnet surface	0.231131 T	Bmg
First harmonic of flux density in airgap	0.23972 T	Bp
Flux per pole (Calculated)	0.000861713 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	0.0893 mm	dist_magnet_Rin
Magnet mass	11760 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	73500 mm3	Vmag
Volume of all magnets	2352000 mm3	VolumeMagnet
Remanent magnetic flux density	0.39 T	Br
Magnetic coercivity	227950 A/m	Hc
Maximum Energy Product	30 KJ/m³	BHmax
Outer diameter	403 mm	Dout
Average radius	162.505 mm	Ravg
Inner radius	125.005 mm	Rin
Outer radius	201.5 mm	Rout
Effective outer radius	200.005 mm	Rout_eff
Mass of rotor disks	20.0773 kgr	BackIronMass
Volume of rotor disks	2551.11 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.708835 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	4	q
Total number of coils in stator	12	coil_num
Number of turns per coil	45	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	4.02124 mm2	sc
Copper wire diameter (Calculated)	2.26274 mm	dc_theor
Coil leg width	26 mm	wc
Average length of coil turn	280.903 mm	lavg
Stator nominal temperature	60 C°	tc_real
Stator surface area	1752.84 cm²	stator_surface_area
Heat coefficient	0.14669	cq_real
Current density	4.72491 A	Jmax_real
Resistivity of copper at nominal temperature	1.93977E-8 Ohm.m	pt
Resistance of a single coil	0.0609761 Ohm	Rc
Phase resistance	0.243904 Ohm	Rphase
Phase inductance	0.000824748 H	Ls
Nagaoka constant	0.167751	Kn
Volume of a single coil	94945.3 mm3	coil_volume
Weight of a single coil	474.627 g	coil_weight_constr
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	49 mm	coil_hole_Rout_constr
Coil mass for construction	6.17015 kgr	mcu_constr
RMS flux linkage of phase A	0.0218202 Wb	FluxRmsA
RMS flux linkage of phase B	0.0214876 Wb	FluxRmsB
RMS flux linkage of phase C	0.0217103 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	25.0342 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	27.5217 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	27.5857 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	27.545 V	V_rmsC
Current at the nominal wind speed	19 A	Iac_nom
Nominal frequency	50.9554 Hz	fnom
Generator power (Torque)	1282.83 W	PelN_Torque_x
Electromagnetic power (Torque)	1554.89 W	PHMN_Torque_x
Copper losses (Torque)	264.148 W	PcopperN_Torque_x
Eddy current losses (Torque)	7.91288 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.808341	efftotalN_Torque_x
AC Power at the rectifier (Torque)	1154.55 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	1039.1 W	PelN_Torque_x_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 (Torque)	32.0999 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	380.833 EUR	Totalcost
Total generator mass	38.6429 kgr	TotalMass
Total generator volume	9.94935 dm3	TotalVolume
Blade rotor mass	6.45151 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	178.685 EUR	Magcost
Magnet shipping cost	142.029 EUR	shippingcost
Copper mass	5.45316 kgr	mcu
Cost of copper	80.4886 EUR	coppercost
Resin mass	1.35247 kgr	resinmass
Cost of resin	18.6815 EUR	resincost
Resin volume	994.463 cm3	ResinVolume
Total mass of one generator rotor	15.9186 kgr	TotalMassRotor
Cost of iron	24.695 EUR	ironcost
Surface area of moulds	0.494209 m2	woodS
Total cost of moulds	78.2827 EUR	woodcost

Revolutions per minute (RPM)
0
382.165605

I_RMS (A)
0
19

Output files

Octave/Matlab variable file:

simulation-6888.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.50m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

12.00m/s

Cut-in TSR:

8.20

Nominal TSR:

5.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

403.00mm

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

75mm

Magnet width:

49mm

Magnet thickness:

20mm

Rotor disk thickness:

10mm

Mechanical clearance:

2.50mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

8.00mm

Winding fill factor:

0.55

Current at nominal wind speed:

19.00A

Stator thickness:

13mm

Number of turns per coil:

Copper wire diameter:

1.60mm

Number of wires at hand:

Coil leg width:

26mm

Stator nominal temperature:

60.00C°

System Inputs

System voltage:

24.00V

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:

Fine mesh

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³