Clone of Test_Simulation_00 | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by VLR on Mon, 16/04/2018 - 12:00

Duration:

00:00:02

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	156.748 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	172.667 RPM	n_nom
Nominal tip speed ratio	2.8916	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	22 mm	hr
Magnet width-to-pole pitch ratio	1.17432	ai
Inner-to-outer magnet radius	0.780985	kd
Flux density in airgap	0.54 T	Bmax
Flux density on magnet surface	0.62 T	Bmg
First harmonic of flux density in airgap	0.4 T	Bp
Flux per pole (Calculated)	0.000465 Wb	Flux_pole
Magnets on a rotor disk	100	magnet_num
Distance between magnets	-3.7974 mm	dist_magnet_Rin
Magnet mass	16875 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	11250 mm3	Vmag
Volume of all magnets	2250000 mm3	VolumeMagnet
Remanent magnetic flux density	1.3 T	Br
Magnetic coercivity	1006580 A/m	Hc
Maximum Energy Product	342 KJ/m³	BHmax
Outer diameter	456.837 mm	Dout
Average radius	203.295 mm	Ravg
Inner radius	178.295 mm	Rin
Outer radius	228.418 mm	Rout
Effective outer radius	228.295 mm	Rout_eff
Mass of rotor disks	56.7595 kgr	BackIronMass
Volume of rotor disks	7212.14 cm3	BackIronVolume

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	25 mm	tw
Number of phases	3	nphase
Number of coils per phase	25	q
Total number of coils in stator	75	coil_num
Number of turns per coil	2	Nc
Copper wire diameter	1.6 mm	dc
Number of wires at hand	3	No_wires_at_hand
Winding fill factor	0.64	kf
Copper wire cross-sectional area	6.03 mm2	sc
Copper wire cross-sectional area (Calculated)	5.71472 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.01 mm²	sc_multi_wires
Copper wire diameter (Calculated)	2.69813 mm	dc_theor
Coil leg width	0.761287 mm	wc
Average length of coil turn	125.1 mm	lavg
Stator nominal temperature	157.424 C°	tc_real
Stator surface area	142.856 cm²	stator_surface_area
Heat coefficient	0.53573	cq_real
Current density	5.68629 A	Jmax_real
Resistivity of copper at nominal temperature	2.09179E-8 Ohm.m	pt
Resistance of a single coil	0.00086794 Ohm	Rc
Phase resistance	0.0216985 Ohm	Rphase
Phase inductance	3.56781E-6 H	Ls
Nagaoka constant	0.569935	Kn
Winding coefficient	0.95	kw
Volume of a single coil	2380.93 mm3	coil_volume
Weight of a single coil	26.9757 g	coil_weight_constr
Coil hole at Ravg	15 mm	coil_hole_Ravg
Coil hole at Rin	12.9114 mm	coil_hole_Rin_constr
Coil hole at Rout	17.099 mm	coil_hole_Rout_constr
Coil mass for construction	2.05016 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	14.113 V	EMF_nom
Current at the nominal wind speed	34.2883 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	143.889 Hz	fnom
Generator power (Calculated)	1161.39 W	Pnom
Copper losses (Calculated)	76.5322 W	Pcopper
Eddy current losses (Calculated)	243.966 W	Peddy
Generator efficiency (Calculated)	0.76847	efficiency_real
AC Power at the rectifier (Calculated)	1045.25 W	Pnom_rect
DC Power at the batteries (Calculated)	940.724 W	Pnom_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 (Calculated)	29.4131 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	1889.28 EUR	Totalcost
Total generator mass	80.3736 kgr	TotalMass
Total generator volume	18.8499 dm3	TotalVolume
Blade rotor mass	7.82974 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	1634.69 EUR	Magcost
Magnet shipping cost	135.87 EUR	shippingcost
Copper mass	1.01159 kgr	mcu
Cost of copper	14.9311 EUR	coppercost
Resin mass	5.72744 kgr	resinmass
Cost of resin	79.1125 EUR	resincost
Resin volume	4211.35 cm3	ResinVolume
Total mass of one generator rotor	36.8173 kgr	TotalMassRotor
Cost of iron	69.8142 EUR	ironcost
Surface area of moulds	0.572802 m2	woodS
Total cost of moulds	90.7318 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-538.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.60m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.00m/s

Nominal wind speed:

10.00m/s

Cut-in TSR:

8.75

Design TSR:

7.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

NdFeB N42

Number of generator poles:

100

Magnet length:

50mm

Magnet width:

15mm

Magnet thickness:

15mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

22mm

Mechanical clearance:

8.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

User defined

Winding fill factor:

0.64

Stator thickness:

User defined

Stator thickness:

25mm

Current density:

6.00A/mm2

System Inputs

System voltage:

24.00V

Nominal voltage:

24.00V

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:

false

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³