5KW 96/72 current increase | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by josh manning 1 on Mon, 21/10/2024 - 14:25

Duration:

00:03:18

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	32.7571 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	58.6624 RPM	n_nom
Nominal tip speed ratio	3.07	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	45 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	400 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	4.12125 m/s	cutin_Vw
Mechanical power (Torque)	6893.79 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.418638	ai
Inner-to-outer magnet radius	0.946662	kd
Flux density in airgap	0.557127 T	Bmax
Flux density on magnet surface	0.733973 T	Bmg
First harmonic of flux density in airgap	0.443527 T	Bp
Flux per pole (Calculated)	0.000586985 Wb	Flux_pole
Magnets on a rotor disk	96	magnet_num
Distance between magnets	26.465 mm	dist_magnet_Rin
Magnet mass	11520 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	8000 mm3	Vmag
Volume of all magnets	1536000 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	1500 mm	Dout
Average radius	729.933 mm	Ravg
Inner radius	709.933 mm	Rin
Outer radius	750 mm	Rout
Effective outer radius	749.933 mm	Rout_eff
Mass of rotor disks	278.149 kgr	BackIronMass
Volume of rotor disks	35342.9 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.911501 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	24	q
Total number of coils in stator	72	coil_num
Number of turns per coil	87	Nc
Copper wire diameter	1.06 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	1.76495 mm2	sc
Copper wire diameter (Calculated)	1.49907 mm	dc_theor
Coil leg width	25 mm	wc
Average length of coil turn	170.225 mm	lavg
Stator nominal temperature	57.7 C°	tc_real
Stator surface area	6128.11 cm²	stator_surface_area
Heat coefficient	0.197231	cq_real
Current density	6.23248 A	Jmax_real
Resistivity of copper at nominal temperature	1.92472E-8 Ohm.m	pt
Resistance of a single coil	0.161502 Ohm	Rc
Phase resistance	3.87605 Ohm	Rphase
Phase inductance	0.00845973 H	Ls
Nagaoka constant	0.20893	Kn
Volume of a single coil	55323.2 mm3	coil_volume
Weight of a single coil	239.047 g	coil_weight_constr
Coil hole at Ravg	13.1987 mm	coil_hole_Ravg
Coil hole at Rin	11.4532 mm	coil_hole_Rin_constr
Coil hole at Rout	14.9438 mm	coil_hole_Rout_constr
Coil mass for construction	17.4504 kgr	mcu_constr
RMS flux linkage of phase A	0.0303583 Wb	FluxRmsA
RMS flux linkage of phase B	0.0297438 Wb	FluxRmsB
RMS flux linkage of phase C	0.0302283 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	171.067 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	306.352 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	210.559 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	211.521 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	210.66 V	V_rmsC
Current at the nominal wind speed	11 A	Iac_nom
Nominal frequency	46.9299 Hz	fnom
Generator power (Torque)	5436.91 W	PelN_Torque_x
Electromagnetic power (Torque)	6848.52 W	PHMN_Torque_x
Copper losses (Torque)	1407.01 W	PcopperN_Torque_x
Eddy current losses (Torque)	4.59957 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.788667	efftotalN_Torque_x
AC Power at the rectifier (Torque)	5165.06 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	4906.81 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)	45.2777 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	2584.8 EUR	Totalcost
Total generator mass	317.601 kgr	TotalMass
Total generator volume	104.262 dm3	TotalVolume
Blade rotor mass	81.9581 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	1327.7 EUR	Magcost
Magnet shipping cost	92.7536 EUR	shippingcost
Copper mass	16.8246 kgr	mcu
Cost of copper	248.331 EUR	coppercost
Resin mass	11.1078 kgr	resinmass
Cost of resin	153.431 EUR	resincost
Resin volume	8167.48 cm3	ResinVolume
Total mass of one generator rotor	144.834 kgr	TotalMassRotor
Cost of iron	342.123 EUR	ironcost
Surface area of moulds	3.24 m2	woodS
Total cost of moulds	513.216 EUR	woodcost

Revolutions per minute (RPM)
0
58.66242

I_RMS (A)
0
11

Output files

Octave/Matlab variable file:

simulation-9538.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

3.50m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

7.00m/s

Cut-in TSR:

4.00

Nominal TSR:

3.07

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

1500.00mm

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

40mm

Magnet width:

20mm

Magnet thickness:

10mm

Rotor disk thickness:

10mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

0.55

Current at nominal wind speed:

11.00A

Stator thickness:

13mm

Number of turns per coil:

Copper wire diameter:

1.06mm

Number of wires at hand:

Coil leg width:

25mm

Stator nominal temperature:

57.70C°

System Inputs

System voltage:

400.00V

Transmission cable losses:

5.00%

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:

Automesh

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³