1.25 75x50x20 12 Triangular 144x1.7mm 360mm | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by JoaoA1977 on Mon, 09/01/2023 - 09:49

Duration:

00:06:59

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	200.637 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	412.739 RPM	n_nom
Nominal tip speed ratio	4.5	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	179 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	58 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	2.67648 m/s	cutin_Vw
Mechanical power (Torque)	2100.79 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.678432	ai
Inner-to-outer magnet radius	0.579255	kd
Flux density in airgap	0.217225 T	Bmax
Flux density on magnet surface	0.22048 T	Bmg
First harmonic of flux density in airgap	0.217117 T	Bp
Flux per pole (Calculated)	0.000842635 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	4.0644 mm	dist_magnet_Rin
Magnet mass	9000 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	75000 mm3	Vmag
Volume of all magnets	1800000 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	360 mm	Dout
Average radius	140.755 mm	Ravg
Inner radius	103.255 mm	Rin
Outer radius	180 mm	Rout
Effective outer radius	178.255 mm	Rout_eff
Mass of rotor disks	16.0214 kgr	BackIronMass
Volume of rotor disks	2035.75 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.675293 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	15 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	144	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.75	kf
Copper wire cross-sectional area	2.2698 mm2	sc
Copper wire diameter (Calculated)	1.7 mm	dc_theor
Coil leg width	30 mm	wc
Average length of coil turn	303.28 mm	lavg
Stator nominal temperature	57.7 C°	tc_real
Stator surface area	1637.71 cm²	stator_surface_area
Heat coefficient	0.29335	cq_real
Current density	5.37492 A	Jmax_real
Resistivity of copper at nominal temperature	1.92472E-8 Ohm.m	pt
Resistance of a single coil	0.370327 Ohm	Rc
Phase resistance	1.11098 Ohm	Rphase
Phase inductance	0.00660528 H	Ls
Nagaoka constant	0.17316	Kn
Volume of a single coil	136476 mm3	coil_volume
Weight of a single coil	898.508 g	coil_weight_constr
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	50 mm	coil_hole_Rout_constr
Coil mass for construction	8.98508 kgr	mcu_constr
RMS flux linkage of phase A	0.0747822 Wb	FluxRmsA
RMS flux linkage of phase B	0.073683 Wb	FluxRmsB
RMS flux linkage of phase C	0.0740837 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	24.8047 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	51.0268 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	57.2043 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	57.4117 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	57.3292 V	V_rmsC
Current at the nominal wind speed	12.2 A	Iac_nom
Nominal frequency	41.2739 Hz	fnom
Generator power (Torque)	1573.54 W	PelN_Torque_x
Electromagnetic power (Torque)	2073.99 W	PHMN_Torque_x
Copper losses (Torque)	496.075 W	PcopperN_Torque_x
Eddy current losses (Torque)	4.37595 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.749023	efftotalN_Torque_x
AC Power at the rectifier (Torque)	1416.18 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	1274.57 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)	26.7979 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	372.506 EUR	Totalcost
Total generator mass	35.1351 kgr	TotalMass
Total generator volume	8.2448 dm3	TotalVolume
Blade rotor mass	3.73351 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	136.548 EUR	Magcost
Magnet shipping cost	108.696 EUR	shippingcost
Copper mass	7.9758 kgr	mcu
Cost of copper	117.723 EUR	coppercost
Resin mass	2.1379 kgr	resinmass
Cost of resin	29.5306 EUR	resincost
Resin volume	1571.98 cm3	ResinVolume
Total mass of one generator rotor	12.5107 kgr	TotalMassRotor
Cost of iron	19.7063 EUR	ironcost
Surface area of moulds	0.4356 m2	woodS
Total cost of moulds	68.999 EUR	woodcost

Revolutions per minute (RPM)
0
412.738854

I_RMS (A)
0
12.2

Output files

Octave/Matlab variable file:

simulation-7889.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.25m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

12.00m/s

Cut-in TSR:

8.75

Nominal TSR:

4.50

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

360.00mm

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

75mm

Magnet width:

50mm

Magnet thickness:

20mm

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

8.00mm

Winding fill factor:

0.75

Current at nominal wind speed:

12.20A

Stator thickness:

15mm

Number of turns per coil:

144

Copper wire diameter:

1.70mm

Number of wires at hand:

Coil leg width:

30mm

Stator nominal temperature:

57.70C°

System Inputs

System voltage:

58.00V

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