3m mada try 15 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by tieole on Sat, 25/02/2023 - 16:33

Duration:

00:04:07

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	83.5987 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	191.083 RPM	n_nom
Nominal tip speed ratio	6	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	111 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	48 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	3.98331 m/s	cutin_Vw
Mechanical power (Torque)	1540.92 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.425223	ai
Inner-to-outer magnet radius	0.713818	kd
Flux density in airgap	0.489209 T	Bmax
Flux density on magnet surface	0.643763 T	Bmg
First harmonic of flux density in airgap	0.392264 T	Bp
Flux per pole (Calculated)	0.000645544 Wb	Flux_pole
Magnets on a rotor disk	20	magnet_num
Distance between magnets	19.1801 mm	dist_magnet_Rin
Magnet mass	3000 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	10000 mm3	Vmag
Volume of all magnets	400000 mm3	VolumeMagnet
Remanent magnetic flux density	1.265 T	Br
Magnetic coercivity	982324 A/m	Hc
Maximum Energy Product	326 KJ/m³	BHmax
Outer diameter	350 mm	Dout
Average radius	149.714 mm	Ravg
Inner radius	124.714 mm	Rin
Outer radius	175 mm	Rout
Effective outer radius	174.714 mm	Rout_eff
Mass of rotor disks	15.1437 kgr	BackIronMass
Volume of rotor disks	1924.23 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.797579 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	5	q
Total number of coils in stator	15	coil_num
Number of turns per coil	85	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.58	kf
Copper wire cross-sectional area	2.01062 mm2	sc
Copper wire diameter (Calculated)	1.6 mm	dc_theor
Coil leg width	21 mm	wc
Average length of coil turn	205.94 mm	lavg
Stator nominal temperature	57.7 C°	tc_real
Stator surface area	1297.42 cm²	stator_surface_area
Heat coefficient	0.470487	cq_real
Current density	7.46039 A	Jmax_real
Resistivity of copper at nominal temperature	1.92472E-8 Ohm.m	pt
Resistance of a single coil	0.16757 Ohm	Rc
Phase resistance	0.83785 Ohm	Rphase
Phase inductance	0.0024395 H	Ls
Nagaoka constant	0.206993	Kn
Volume of a single coil	56221.6 mm3	coil_volume
Weight of a single coil	322.053 g	coil_weight_constr
Coil hole at Rin	20 mm	coil_hole_Rin_constr
Coil hole at Rout	20 mm	coil_hole_Rout_constr
Coil mass for construction	5.15285 kgr	mcu_constr
RMS flux linkage of phase A	0.0345142 Wb	FluxRmsA
RMS flux linkage of phase B	0.0333505 Wb	FluxRmsB
RMS flux linkage of phase C	0.0340885 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	20.528 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	46.9212 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	33.4279 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	34.1745 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	33.6119 V	V_rmsC
Current at the nominal wind speed	15 A	Iac_nom
Nominal frequency	31.8471 Hz	fnom
Generator power (Torque)	940.621 W	PelN_Torque_x
Electromagnetic power (Torque)	1508.8 W	PHMN_Torque_x
Copper losses (Torque)	565.549 W	PcopperN_Torque_x
Eddy current losses (Torque)	2.62591 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.61043	efftotalN_Torque_x
AC Power at the rectifier (Torque)	846.559 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	761.903 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)	32.1196 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	496.229 EUR	Totalcost
Total generator mass	25.3132 kgr	TotalMass
Total generator volume	5.67647 dm3	TotalVolume
Blade rotor mass	51.6121 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	283.955 EUR	Magcost
Magnet shipping cost	24.1546 EUR	shippingcost
Copper mass	4.71974 kgr	mcu
Cost of copper	92.8845 EUR	coppercost
Resin mass	2.4498 kgr	resinmass
Cost of resin	33.8388 EUR	resincost
Resin volume	1801.32 cm3	ResinVolume
Total mass of one generator rotor	9.07183 kgr	TotalMassRotor
Cost of iron	18.6267 EUR	ironcost
Surface area of moulds	0.4225 m2	woodS
Total cost of moulds	66.924 EUR	woodcost

Revolutions per minute (RPM)
0
191.082803

I_RMS (A)
0
15

Output files

Octave/Matlab variable file:

simulation-8135.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.00m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.75

Nominal TSR:

6.00

Air density:

1.225kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

350.00mm

Magnetic material:

NdFeB N40

Number of generator poles:

Magnet length:

50mm

Magnet width:

20mm

Magnet thickness:

10mm

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

0.58

Current at nominal wind speed:

15.00A

Stator thickness:

13mm

Number of turns per coil:

Copper wire diameter:

1.60mm

Number of wires at hand:

Coil leg width:

21mm

Stator nominal temperature:

57.70C°

System Inputs

System voltage:

48.00V

Transmission cable losses:

10.00%

Rectifier losses:

10.00%

Financial

Copper price:

16.00€/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