kx 300 20mm AG | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by josh manning 1 on Thu, 12/09/2024 - 13:20

Duration:

00:02:05

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	50.2849 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	135.068 RPM	n_nom
Nominal tip speed ratio	4.47677	tsr_nom
Mechanical power (Torque)	258.649 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	4 mm	hr
Magnet width-to-pole pitch ratio	0.621767	ai
Inner-to-outer magnet radius	0.822046	kd
Flux density in airgap	0.380168 T	Bmax
Flux density on magnet surface	0.552684 T	Bmg
First harmonic of flux density in airgap	0.355507 T	Bp
Flux per pole (Calculated)	0.000442798 Wb	Flux_pole
Magnets on a rotor disk	40	magnet_num
Distance between magnets	9.0248 mm	dist_magnet_Rin
Magnet mass	2400 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	4000 mm3	Vmag
Volume of all magnets	320000 mm3	VolumeMagnet
Remanent magnetic flux density	1.45 T	Br
Magnetic coercivity	1120020 A/m	Hc
Maximum Energy Product	422 KJ/m³	BHmax
Outer diameter	450 mm	Dout
Average radius	204.778 mm	Ravg
Inner radius	184.778 mm	Rin
Outer radius	225 mm	Rout
Effective outer radius	224.778 mm	Rout_eff
Mass of rotor disks	10.0134 kgr	BackIronMass
Volume of rotor disks	1272.35 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.70696 T	SaturMAX
Is the magnet rotor disk saturated?	Yes	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	9 mm	tw
Number of phases	3	nphase
Number of coils per phase	10	q
Total number of coils in stator	30	coil_num
Number of turns per coil	14	Nc
Copper wire diameter	1.5 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.5	kf
Copper wire cross-sectional area	1.76715 mm2	sc
Copper wire diameter (Calculated)	1.5 mm	dc_theor
Coil leg width	8 mm	wc
Average length of coil turn	142.557 mm	lavg
Stator nominal temperature	40 C°	tc_real
Stator surface area	684.275 cm²	stator_surface_area
Heat coefficient	0.0691602	cq_real
Current density	5.99837 A	Jmax_real
Resistivity of copper at nominal temperature	1.80888E-8 Ohm.m	pt
Resistance of a single coil	0.0204294 Ohm	Rc
Phase resistance	0.204294 Ohm	Rphase
Phase inductance	0.000107205 H	Ls
Nagaoka constant	0.242227	Kn
Volume of a single coil	10264.1 mm3	coil_volume
Weight of a single coil	36.0346 g	coil_weight_constr
Coil hole at Ravg	26.3885 mm	coil_hole_Ravg
Coil hole at Rin	22.1864 mm	coil_hole_Rin_constr
Coil hole at Rout	30.5538 mm	coil_hole_Rout_constr
Coil mass for construction	1.11707 kgr	mcu_constr
RMS flux linkage of phase A	0.00304075 Wb	FluxRmsA
RMS flux linkage of phase B	0.00291468 Wb	FluxRmsB
RMS flux linkage of phase C	0.00303224 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	27.5698 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	8.27857 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	8.45116 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	8.28613 V	V_rmsC
Current at the nominal wind speed	10.6 A	Iac_nom
Nominal frequency	45.0228 Hz	fnom
Generator power (Torque)	180.169 W	PelN_Torque_x
Electromagnetic power (Torque)	249.499 W	PHMN_Torque_x
Copper losses (Torque)	68.8634 W	PcopperN_Torque_x
Eddy current losses (Torque)	0.466859 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.696579	efftotalN_Torque_x
AC Power at the rectifier (Torque)	176.566 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	171.269 W	PelN_Torque_x_dc

Generator Bearing Hub Outputs
Property	Value	Variable name
Number of bolts on hub	5	No_bolts_hub
Mass of bearing hub	8344.46 g	BearingHubMass
Rotational losses (Torque)	9.14932 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	424.511 EUR	Totalcost
Total generator mass	15.5544 kgr	TotalMass
Total generator volume	6.04364 dm3	TotalVolume
Blade rotor mass	13.1114 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	278.812 EUR	Magcost
Magnet shipping cost	19.3237 EUR	shippingcost
Copper mass	0.945907 kgr	mcu
Cost of copper	13.9616 EUR	coppercost
Resin mass	2.19517 kgr	resinmass
Cost of resin	30.3217 EUR	resincost
Resin volume	1614.1 cm3	ResinVolume
Total mass of one generator rotor	6.20668 kgr	TotalMassRotor
Cost of iron	12.3164 EUR	ironcost
Surface area of moulds	0.5625 m2	woodS
Total cost of moulds	89.1 EUR	woodcost

Revolutions per minute (RPM)
0
135.068488

I_RMS (A)
0
10.6

Output files

Octave/Matlab variable file:

simulation-9450.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.90m

Cut-in wind speed:

2.00m/s

Nominal wind speed:

6.00m/s

Cut-in TSR:

5.00

Nominal TSR:

4.48

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

450.00mm

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

40mm

Magnet width:

20mm

Magnet thickness:

5mm

Rotor disk thickness:

4mm

Mechanical clearance:

5.50mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

0.50

Current at nominal wind speed:

10.60A

Stator thickness:

9mm

Number of turns per coil:

Copper wire diameter:

1.50mm

Number of wires at hand:

Coil leg width:

8mm

Stator nominal temperature:

40.00C°

System Inputs

System voltage:

24.00V

Transmission cable losses:

2.00%

Rectifier losses:

3.00%

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