4F 24V v0.1 (only for controller reverence, unfinished design) | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Jonathan_purese... on Tue, 16/02/2021 - 11:37

Duration:

00:06:05

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	125.398 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	252.229 RPM	n_nom
Nominal tip speed ratio	4.4	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	110 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	24 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	2.63162 m/s	cutin_Vw
Mechanical power (Torque)	3513.9 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.753407	ai
Inner-to-outer magnet radius	0.698489	kd
Flux density in airgap	0.227362 T	Bmax
Flux density on magnet surface	0.227419 T	Bmg
First harmonic of flux density in airgap	0.236223 T	Bp
Flux per pole (Calculated)	0.000860999 Wb	Flux_pole
Magnets on a rotor disk	20	magnet_num
Distance between magnets	4.5842 mm	dist_magnet_Rin
Magnet mass	15000 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	75000 mm3	Vmag
Volume of all magnets	3000000 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	500 mm	Dout
Average radius	211.247 mm	Ravg
Inner radius	173.747 mm	Rin
Outer radius	250 mm	Rout
Effective outer radius	248.747 mm	Rout_eff
Mass of rotor disks	30.9054 kgr	BackIronMass
Volume of rotor disks	3926.99 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.708536 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	5	q
Total number of coils in stator	15	coil_num
Number of turns per coil	35	Nc
Copper wire diameter	1.8 mm	dc
Number of wires at hand	2	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	5.08938 mm2	sc
Copper wire diameter (Calculated)	2.54558 mm	dc_theor
Coil leg width	28 mm	wc
Average length of coil turn	283.306 mm	lavg
Stator nominal temperature	60 C°	tc_real
Stator surface area	2379.77 cm²	stator_surface_area
Heat coefficient	0.529875	cq_real
Current density	9.82438 A	Jmax_real
Resistivity of copper at nominal temperature	1.93977E-8 Ohm.m	pt
Resistance of a single coil	0.0377928 Ohm	Rc
Phase resistance	0.188964 Ohm	Rphase
Phase inductance	0.000616947 H	Ls
Nagaoka constant	0.163145	Kn
Volume of a single coil	103124 mm3	coil_volume
Weight of a single coil	476.936 g	coil_weight_constr
Coil hole at Rin	8 mm	coil_hole_Rin_constr
Coil hole at Rout	50 mm	coil_hole_Rout_constr
Coil mass for construction	7.63098 kgr	mcu_constr
RMS flux linkage of phase A	0.0180865 Wb	FluxRmsA
RMS flux linkage of phase B	0.0177217 Wb	FluxRmsB
RMS flux linkage of phase C	0.0178451 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	20.6453 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	23.3453 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	23.5225 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	23.4797 V	V_rmsC
Current at the nominal wind speed	50 A	Iac_nom
Nominal frequency	42.0382 Hz	fnom
Generator power (Torque)	2055.08 W	PelN_Torque_x
Electromagnetic power (Torque)	3478.82 W	PHMN_Torque_x
Copper losses (Torque)	1417.23 W	PcopperN_Torque_x
Eddy current losses (Torque)	6.51545 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.584841	efftotalN_Torque_x
AC Power at the rectifier (Torque)	1849.57 W	PelN_Torque_x_rect
DC Power at the batteries (Torque)	1664.61 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)	35.0812 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	492.284 EUR	Totalcost
Total generator mass	54.5137 kgr	TotalMass
Total generator volume	15.5116 dm3	TotalVolume
Blade rotor mass	15.2925 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	227.579 EUR	Magcost
Magnet shipping cost	181.159 EUR	shippingcost
Copper mass	6.76734 kgr	mcu
Cost of copper	99.886 EUR	coppercost
Resin mass	1.84094 kgr	resinmass
Cost of resin	25.4288 EUR	resincost
Resin volume	1353.63 cm3	ResinVolume
Total mass of one generator rotor	22.9527 kgr	TotalMassRotor
Cost of iron	38.0137 EUR	ironcost
Surface area of moulds	0.64 m2	woodS
Total cost of moulds	101.376 EUR	woodcost

Revolutions per minute (RPM)
0
252.229299

I_RMS (A)
0
50

Output files

Octave/Matlab variable file:

simulation-6887.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

2.00m

Cut-in wind speed:

3.00m/s

Nominal wind speed:

12.00m/s

Cut-in TSR:

8.75

Nominal TSR:

4.40

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Outer diameter:

500.00mm

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

75mm

Magnet width:

50mm

Magnet thickness:

20mm

Rotor disk thickness:

10mm

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:

50.00A

Stator thickness:

13mm

Number of turns per coil:

Copper wire diameter:

1.80mm

Number of wires at hand:

Coil leg width:

28mm

Stator nominal temperature:

60.00C°

System Inputs

System 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

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