Clone of Clone of Clone of Clone of Clone of 1 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by David Harrop on Fri, 23/10/2020 - 16:41

Duration:

00:05:35

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	102.366 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	204.732 RPM	n_nom
Nominal tip speed ratio	5	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	109 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	56 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	2.66202 m/s	cutin_Vw
Mechanical power (Torque)	339.225 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.440662	ai
Inner-to-outer magnet radius	0.603578	kd
Flux density in airgap	0.787599 T	Bmax
Flux density on magnet surface	0.791943 T	Bmg
First harmonic of flux density in airgap	0.587322 T	Bp
Flux per pole (Calculated)	0.00209558 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	24.791 mm	dist_magnet_Rin
Magnet mass	4725 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	26250 mm3	Vmag
Volume of all magnets	630000 mm3	VolumeMagnet
Remanent magnetic flux density	1.35 T	Br
Magnetic coercivity	1041910 A/m	Hc
Maximum Energy Product	366 KJ/m³	BHmax
Outer diameter	380 mm	Dout
Average radius	151.692 mm	Ravg
Inner radius	114.192 mm	Rin
Outer radius	190 mm	Rout
Effective outer radius	189.192 mm	Rout_eff
Mass of rotor disks	17.851 kgr	BackIronMass
Volume of rotor disks	2268.23 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.52801 T	SaturMAX
Is the magnet rotor disk saturated?	Yes	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	10 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	70	Nc
Copper wire diameter	0.72 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	0.40715 mm2	sc
Copper wire diameter (Calculated)	0.72 mm	dc_theor
Coil leg width	21 mm	wc
Average length of coil turn	313.97 mm	lavg
Stator nominal temperature	40 C°	tc_real
Stator surface area	1186.81 cm²	stator_surface_area
Heat coefficient	0.00730862	cq_real
Current density	4.91219 A	Jmax_real
Resistivity of copper at nominal temperature	1.80888E-8 Ohm.m	pt
Resistance of a single coil	0.976431 Ohm	Rc
Phase resistance	2.92929 Ohm	Rphase
Phase inductance	0.00195934 H	Ls
Nagaoka constant	0.135212	Kn
Volume of a single coil	65933.6 mm3	coil_volume
Weight of a single coil	82.2835 g	coil_weight_constr
Coil hole at Ravg	63.4012 mm	coil_hole_Ravg
Coil hole at Rin	37.0568 mm	coil_hole_Rin_constr
Coil hole at Rout	88.7467 mm	coil_hole_Rout_constr
Coil mass for construction	0.822835 kgr	mcu_constr
RMS flux linkage of phase A	0.116227 Wb	FluxRmsA
RMS flux linkage of phase B	0.11452 Wb	FluxRmsB
RMS flux linkage of phase C	0.116179 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	23.9493 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	47.8987 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	45.5854 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	46.0464 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	45.5909 V	V_rmsC
Current at the nominal wind speed	2 A	Iac_nom
Nominal frequency	20.4732 Hz	fnom
Generator power (Torque)	291.032 W	PelN_Torque_x
Electromagnetic power (Torque)	326.315 W	PHMN_Torque_x
Copper losses (Torque)	35.1515 W	PcopperN_Torque_x
Eddy current losses (Torque)	0.131124 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.857932	efftotalN_Torque_x
AC Power at the rectifier (Torque)	261.929 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	235.736 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)	12.9103 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	610.8 EUR	Totalcost
Total generator mass	25.839 kgr	TotalMass
Total generator volume	6.01081 dm3	TotalVolume
Blade rotor mass	5.24532 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	469.846 EUR	Magcost
Magnet shipping cost	38.0435 EUR	shippingcost
Copper mass	0.71998 kgr	mcu
Cost of copper	10.6269 EUR	coppercost
Resin mass	2.54302 kgr	resinmass
Cost of resin	35.1264 EUR	resincost
Resin volume	1869.87 cm3	ResinVolume
Total mass of one generator rotor	11.288 kgr	TotalMassRotor
Cost of iron	21.9567 EUR	ironcost
Surface area of moulds	0.4624 m2	woodS
Total cost of moulds	73.2442 EUR	woodcost

Revolutions per minute (RPM)
0
204.731574

I_RMS (A)
0
2

Output files

Octave/Matlab variable file:

simulation-6523.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.40m

Cut-in wind speed:

2.50m/s

Nominal wind speed:

6.00m/s

Cut-in TSR:

6.00

Nominal TSR:

5.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

380.00mm

Magnetic material:

NdFeB N45

Number of generator poles:

Magnet length:

75mm

Magnet width:

35mm

Magnet thickness:

10mm

Rotor disk thickness:

10mm

Mechanical clearance:

1.50mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

0.55

Current at nominal wind speed:

2.00A

Stator thickness:

10mm

Number of turns per coil:

Copper wire diameter:

0.72mm

Number of wires at hand:

Coil leg width:

21mm

Stator nominal temperature:

40.00C°

System Inputs

System voltage:

56.00V

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