test 0.4 13m/s 2F new 24V Book | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Jonathan_purese... on Tue, 16/03/2021 - 16:35

Duration:

00:14:21

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	221.482 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	621.019 RPM	n_nom
Nominal tip speed ratio	5.5	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	224 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	26 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	3.0341 m/s	cutin_Vw
Mechanical power (Torque)	1082.31 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	6 mm	hr
Magnet width-to-pole pitch ratio	0.789801	ai
Inner-to-outer magnet radius	0.668312	kd
Flux density in airgap	0.209384 T	Bmax
Flux density on magnet surface	0.218641 T	Bmg
First harmonic of flux density in airgap	0.212534 T	Bp
Flux per pole (Calculated)	0.000433266 Wb	Flux_pole
Magnets on a rotor disk	16	magnet_num
Distance between magnets	0.5621 mm	dist_magnet_Rin
Magnet mass	6240 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	39000 mm3	Vmag
Volume of all magnets	1248000 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	304 mm	Dout
Average radius	125.744 mm	Ravg
Inner radius	100.744 mm	Rin
Outer radius	152 mm	Rout
Effective outer radius	150.744 mm	Rout_eff
Mass of rotor disks	6.85477 kgr	BackIronMass
Volume of rotor disks	871 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.997706 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	4	q
Total number of coils in stator	12	coil_num
Number of turns per coil	63	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	2.01062 mm2	sc
Copper wire diameter (Calculated)	1.6 mm	dc_theor
Coil leg width	19 mm	wc
Average length of coil turn	200.029 mm	lavg
Stator nominal temperature	60 C°	tc_real
Stator surface area	912.133 cm²	stator_surface_area
Heat coefficient	0.214758	cq_real
Current density	5.96831 A	Jmax_real
Resistivity of copper at nominal temperature	1.93977E-8 Ohm.m	pt
Resistance of a single coil	0.121578 Ohm	Rc
Phase resistance	0.486311 Ohm	Rphase
Phase inductance	0.00105704 H	Ls
Nagaoka constant	0.216325	Kn
Volume of a single coil	49407.2 mm3	coil_volume
Weight of a single coil	233.708 g	coil_weight_constr
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	39 mm	coil_hole_Rout_constr
Coil mass for construction	3.03821 kgr	mcu_constr
RMS flux linkage of phase A	0.0143178 Wb	FluxRmsA
RMS flux linkage of phase B	0.0141719 Wb	FluxRmsB
RMS flux linkage of phase C	0.0142672 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	11.1193 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	31.1778 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	29.4968 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	29.5621 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	29.525 V	V_rmsC
Current at the nominal wind speed	12 A	Iac_nom
Nominal frequency	82.8025 Hz	fnom
Generator power (Torque)	844.359 W	PelN_Torque_x
Electromagnetic power (Torque)	1058.28 W	PHMN_Torque_x
Copper losses (Torque)	210.086 W	PcopperN_Torque_x
Eddy current losses (Torque)	3.83235 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.780147	efftotalN_Torque_x
AC Power at the rectifier (Torque)	759.923 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	721.927 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)	24.0306 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	220.562 EUR	Totalcost
Total generator mass	16.7718 kgr	TotalMass
Total generator volume	5.15342 dm3	TotalVolume
Blade rotor mass	2.54428 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	100.978 EUR	Magcost
Magnet shipping cost	75.3623 EUR	shippingcost
Copper mass	2.71821 kgr	mcu
Cost of copper	40.1207 EUR	coppercost
Resin mass	0.958842 kgr	resinmass
Cost of resin	13.2444 EUR	resincost
Resin volume	705.031 cm3	ResinVolume
Total mass of one generator rotor	6.54739 kgr	TotalMassRotor
Cost of iron	8.43137 EUR	ironcost
Surface area of moulds	0.364816 m2	woodS
Total cost of moulds	57.7869 EUR	woodcost

Revolutions per minute (RPM)
0
124.203822
248.407643
372.611465
496.815287
621.019108

I_RMS (A)
0
4
8
12

Output files

Octave/Matlab variable file:

simulation-6992.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.10m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

13.00m/s

Cut-in TSR:

8.50

Nominal TSR:

5.50

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

304.00mm

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

50mm

Magnet width:

39mm

Magnet thickness:

20mm

Rotor disk thickness:

6mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

8.00mm

Winding fill factor:

0.55

Current at nominal wind speed:

12.00A

Stator thickness:

13mm

Number of turns per coil:

Copper wire diameter:

1.60mm

Number of wires at hand:

Coil leg width:

19mm

Stator nominal temperature:

60.00C°

System Inputs

System voltage:

26.00V

Transmission cable losses:

10.00%

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:

Fine mesh

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³