5KW | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by josh manning 1 on Tue, 01/10/2024 - 09:19

Duration:

00:03:56

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	32.7571 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	59.6178 RPM	n_nom
Nominal tip speed ratio	3.12	tsr_nom
Mechanical power (Torque)	5396.74 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	7 mm	hr
Magnet width-to-pole pitch ratio	0.348865	ai
Inner-to-outer magnet radius	0.946662	kd
Flux density in airgap	0.407626 T	Bmax
Flux density on magnet surface	0.556053 T	Bmg
First harmonic of flux density in airgap	0.275549 T	Bp
Flux per pole (Calculated)	0.000444696 Wb	Flux_pole
Magnets on a rotor disk	80	magnet_num
Distance between magnets	35.758 mm	dist_magnet_Rin
Magnet mass	4800 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	4000 mm3	Vmag
Volume of all magnets	640000 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	1500 mm	Dout
Average radius	729.933 mm	Ravg
Inner radius	709.933 mm	Rin
Outer radius	750 mm	Rout
Effective outer radius	749.933 mm	Rout_eff
Mass of rotor disks	194.704 kgr	BackIronMass
Volume of rotor disks	24740 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.928183 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	20	q
Total number of coils in stator	60	coil_num
Number of turns per coil	100	Nc
Copper wire diameter	1.06 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	0.882473 mm2	sc
Copper wire diameter (Calculated)	1.06 mm	dc_theor
Coil leg width	21 mm	wc
Average length of coil turn	188.27 mm	lavg
Stator nominal temperature	57.7 C°	tc_real
Stator surface area	4744.42 cm²	stator_surface_area
Heat coefficient	0.476883	cq_real
Current density	14.1647 A	Jmax_real
Resistivity of copper at nominal temperature	1.92472E-8 Ohm.m	pt
Resistance of a single coil	0.410627 Ohm	Rc
Phase resistance	8.21254 Ohm	Rphase
Phase inductance	0.0117131 H	Ls
Nagaoka constant	0.214794	Kn
Volume of a single coil	51397.8 mm3	coil_volume
Weight of a single coil	151.503 g	coil_weight_constr
Coil hole at Ravg	33.9384 mm	coil_hole_Ravg
Coil hole at Rin	31.8414 mm	coil_hole_Rin_constr
Coil hole at Rout	36.0294 mm	coil_hole_Rout_constr
Coil mass for construction	9.24169 kgr	mcu_constr
RMS flux linkage of phase A	0.0293163 Wb	FluxRmsA
RMS flux linkage of phase B	0.0286241 Wb	FluxRmsB
RMS flux linkage of phase C	0.0288503 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	171.067 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	311.341 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	146.251 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	148.589 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	146.692 V	V_rmsC
Current at the nominal wind speed	12.5 A	Iac_nom
Nominal frequency	39.7452 Hz	fnom
Generator power (Torque)	1511.48 W	PelN_Torque_x
Electromagnetic power (Torque)	5361.47 W	PHMN_Torque_x
Copper losses (Torque)	3849.63 W	PcopperN_Torque_x
Eddy current losses (Torque)	0.365903 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.280073	efftotalN_Torque_x
AC Power at the rectifier (Torque)	1435.91 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	1364.11 W	PelN_Torque_x_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	6	No_bolts_hub
Mass of bearing hub	14290.7 g	BearingHubMass
Rotational losses (Torque)	35.2643 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1620 EUR	Totalcost
Total generator mass	221.312 kgr	TotalMass
Total generator volume	75.9873 dm3	TotalVolume
Blade rotor mass	81.9581 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	557.623 EUR	Magcost
Magnet shipping cost	38.6473 EUR	shippingcost
Copper mass	8.91195 kgr	mcu
Cost of copper	131.54 EUR	coppercost
Resin mass	12.8964 kgr	resinmass
Cost of resin	178.136 EUR	resincost
Resin volume	9482.62 cm3	ResinVolume
Total mass of one generator rotor	99.7521 kgr	TotalMassRotor
Cost of iron	239.486 EUR	ironcost
Surface area of moulds	3.24 m2	woodS
Total cost of moulds	513.216 EUR	woodcost

Revolutions per minute (RPM)
0
59.617834

I_RMS (A)
0
12.5

Output files

Octave/Matlab variable file:

simulation-9493.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.50m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

7.00m/s

Cut-in TSR:

4.00

Nominal TSR:

3.12

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

1500.00mm

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

40mm

Magnet width:

20mm

Magnet thickness:

5mm

Rotor disk thickness:

7mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

0.55

Current at nominal wind speed:

12.50A

Stator thickness:

13mm

Number of turns per coil:

100

Copper wire diameter:

1.06mm

Number of wires at hand:

Coil leg width:

21mm

Stator nominal temperature:

57.70C°

System Inputs

System voltage:

400.00V

Transmission cable losses:

5.00%

Rectifier losses:

5.00%

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