HORIZON 4m | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by fromwastetowind on Tue, 01/07/2025 - 08:42

Duration:

00:07:38

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	49.1356 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	245.678 RPM	n_nom
Nominal tip speed ratio	6	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	40 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	804 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	2.44222 m/s	cutin_Vw
Mechanical power (Torque)	30580.9 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	15 mm	hr
Magnet width-to-pole pitch ratio	0.844215	ai
Inner-to-outer magnet radius	0.743158	kd
Flux density in airgap	0.657028 T	Bmax
Flux density on magnet surface	0.689637 T	Bmg
First harmonic of flux density in airgap	0.673512 T	Bp
Flux per pole (Calculated)	0.00346065 Wb	Flux_pole
Magnets on a rotor disk	36	magnet_num
Distance between magnets	0.5 mm	dist_magnet_Rin
Magnet mass	54000 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	100000 mm3	Vmag
Volume of all magnets	7200000 mm3	VolumeMagnet
Remanent magnetic flux density	1.195 T	Br
Magnetic coercivity	918880 A/m	Hc
Maximum Energy Product	287 KJ/m³	BHmax
Outer diameter	780.291 mm	Dout
Average radius	339.344 mm	Ravg
Inner radius	289.344 mm	Rin
Outer radius	390.145 mm	Rout
Effective outer radius	389.344 mm	Rout_eff
Mass of rotor disks	112.901 kgr	BackIronMass
Volume of rotor disks	14345.8 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.47735 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	18 mm	tw
Number of phases	3	nphase
Number of coils per phase	9	q
Total number of coils in stator	27	coil_num
Number of turns per coil	278	Nc
Copper wire diameter	1.18 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.7	kf
Copper wire cross-sectional area	1.09 mm2	sc
Copper wire cross-sectional area (Calculated)	1.06598 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.09 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.1653 mm	dc_theor
Coil leg width	24.0492 mm	wc
Average length of coil turn	317.538 mm	lavg
Stator nominal temperature	88.2623 C°	tc_real
Stator surface area	4123.73 cm²	stator_surface_area
Heat coefficient	0.318878	cq_real
Current density	4.8898 A	Jmax_real
Resistivity of copper at nominal temperature	2.11691E-8 Ohm.m	pt
Resistance of a single coil	1.71441 Ohm	Rc
Phase resistance	15.4297 Ohm	Rphase
Phase inductance	0.0811479 H	Ls
Nagaoka constant	0.20827	Kn
Winding coefficient	0.604388	kw
Volume of a single coil	137458 mm3	coil_volume
Weight of a single coil	866.398 g	coil_weight_constr
Coil hole at Ravg	29 mm	coil_hole_Ravg
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	50 mm	coil_hole_Rout_constr
Coil mass for construction	24.2591 kgr	mcu_constr
RMS flux linkage of phase A	0.490121 Wb	FluxRmsA
RMS flux linkage of phase B	0.478841 Wb	FluxRmsB
RMS flux linkage of phase C	0.488316 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	342.133 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	1710.67 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	2002.05 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	2019.57 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	2005.85 V	V_rmsC
Current at the nominal wind speed	5.32988 A	Iac_nom
Terminal voltage at the nominal wind speed	376.347 V	V_term_line
Nominal frequency	73.7034 Hz	fnom
Generator power (Calculated)	25332.1 W	Pnom
Generator power (Torque)	29067.3 W	PelN_Torque_x
Electromagnetic power (Torque)	30451.6 W	PHMN_Torque_x
Copper losses (Calculated)	1314.96 W	Pcopper
Copper losses (Torque)	1314.96 W	PcopperN_Torque_x
Eddy current losses (Torque)	69.3815 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.950504	efftotalN_Torque_x
Generator efficiency (Calculated)	0.924122	efficiency_real
AC Power at the rectifier (Calculated)	22798.9 W	Pnom_rect
AC Power at the rectifier (Torque)	26160.6 W	PelN_Torque_x_rect
DC Power at the batteries (Calculated)	20519 W	Pnom_dc
DC Power at the batteries (Torque)	23544.5 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 (Calculated)	129.3 W	Prot
Rotational losses (Torque)	129.3 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	5391.29 EUR	Totalcost
Total generator mass	196.571 kgr	TotalMass
Total generator volume	44.9501 dm3	TotalVolume
Blade rotor mass	81.9581 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	4635.75 EUR	Magcost
Magnet shipping cost	434.783 EUR	shippingcost
Copper mass	23.2257 kgr	mcu
Cost of copper	342.811 EUR	coppercost
Resin mass	6.44418 kgr	resinmass
Cost of resin	89.0128 EUR	resincost
Resin volume	4738.37 cm3	ResinVolume
Total mass of one generator rotor	83.4507 kgr	TotalMassRotor
Cost of iron	138.869 EUR	ironcost
Surface area of moulds	1.16703 m2	woodS
Total cost of moulds	184.857 EUR	woodcost

Revolutions per minute (RPM)
0
245.677889

I_RMS (A)
0
5.329877

Output files

Octave/Matlab variable file:

simulation-9884.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.50m

Aerodynamic coefficient:

0.35

Cut-in wind speed:

3.00m/s

Nominal wind speed:

15.00m/s

Cut-in TSR:

6.00

Design TSR:

6.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N35

Number of generator poles:

Magnet length:

100mm

Magnet width:

50mm

Magnet thickness:

20mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

15mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

8.00mm

Winding fill factor:

User defined

Winding fill factor:

0.70

Stator thickness:

Calculated

Current density:

5.00A/mm2

System Inputs

System voltage:

800.00V

Nominal voltage:

800.00V

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