AFPMG | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by muldiyuhendri on Sat, 17/11/2018 - 05:43

Duration:

00:06:04

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	208.997 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	338.067 RPM	n_nom
Nominal tip speed ratio	4.24612	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	187 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	24 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	2.68425 m/s	cutin_Vw
Mechanical power (Torque)	865.616 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	10 mm	hr
Magnet width-to-pole pitch ratio	0.410667	ai
Inner-to-outer magnet radius	0.716955	kd
Flux density in airgap	0.426569 T	Bmax
Flux density on magnet surface	0.587557 T	Bmg
First harmonic of flux density in airgap	0.318757 T	Bp
Flux per pole (Calculated)	0.000817321 Wb	Flux_pole
Magnets on a rotor disk	12	magnet_num
Distance between magnets	31.009 mm	dist_magnet_Rin
Magnet mass	2484 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	331200 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	326.419 mm	Dout
Average radius	139.519 mm	Ravg
Inner radius	116.519 mm	Rin
Outer radius	163.209 mm	Rout
Effective outer radius	162.519 mm	Rout_eff
Mass of rotor disks	13.1718 kgr	BackIronMass
Volume of rotor disks	1673.67 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.0618 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	12 mm	tw
Number of phases	3	nphase
Number of coils per phase	3	q
Total number of coils in stator	9	coil_num
Number of turns per coil	62	Nc
Copper wire diameter	1.9 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.57	kf
Copper wire cross-sectional area	2.83 mm2	sc
Copper wire cross-sectional area (Calculated)	2.72972 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.83 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.86477 mm	dc_theor
Coil leg width	25.652 mm	wc
Average length of coil turn	232.547 mm	lavg
Stator nominal temperature	64.8485 C°	tc_real
Stator surface area	1073.76 cm²	stator_surface_area
Heat coefficient	0.225193	cq_real
Current density	5.78739 A	Jmax_real
Resistivity of copper at nominal temperature	1.9659E-8 Ohm.m	pt
Resistance of a single coil	0.100156 Ohm	Rc
Phase resistance	0.300469 Ohm	Rphase
Phase inductance	0.000897064 H	Ls
Nagaoka constant	0.172614	Kn
Winding coefficient	0.728227	kw
Volume of a single coil	71583.8 mm3	coil_volume
Weight of a single coil	376.544 g	coil_weight_constr
Coil hole at Ravg	30 mm	coil_hole_Ravg
Coil hole at Rin	30 mm	coil_hole_Rin_constr
Coil hole at Rout	30 mm	coil_hole_Rout_constr
Coil mass for construction	3.76544 kgr	mcu_constr
RMS flux linkage of phase A	0.0278408 Wb	FluxRmsA
RMS flux linkage of phase B	0.0272254 Wb	FluxRmsB
RMS flux linkage of phase C	0.0275778 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	16.6195 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	17.393 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	17.6392 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	17.4707 V	V_rmsC
Current at the nominal wind speed	16.3783 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	33.8067 Hz	fnom
Generator power (Calculated)	554.754 W	Pnom
Generator power (Torque)	606.118 W	PelN_Torque_x
Electromagnetic power (Torque)	850.289 W	PHMN_Torque_x
Copper losses (Calculated)	241.802 W	Pcopper
Copper losses (Torque)	241.802 W	PcopperN_Torque_x
Eddy current losses (Torque)	2.36858 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.700217	efftotalN_Torque_x
Generator efficiency (Calculated)	0.677211	efficiency_real
AC Power at the rectifier (Calculated)	499.278 W	Pnom_rect
AC Power at the rectifier (Torque)	545.507 W	PelN_Torque_x_rect
DC Power at the batteries (Calculated)	449.35 W	Pnom_dc
DC Power at the batteries (Torque)	490.956 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 (Calculated)	15.3263 W	Prot
Rotational losses (Torque)	15.3263 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	442.854 EUR	Totalcost
Total generator mass	21.1625 kgr	TotalMass
Total generator volume	4.01681 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	285.324 EUR	Magcost
Magnet shipping cost	20 EUR	shippingcost
Copper mass	3.28299 kgr	mcu
Cost of copper	48.4569 EUR	coppercost
Resin mass	2.22369 kgr	resinmass
Cost of resin	30.7156 EUR	resincost
Resin volume	1635.07 cm3	ResinVolume
Total mass of one generator rotor	7.82789 kgr	TotalMassRotor
Cost of iron	16.2013 EUR	ironcost
Surface area of moulds	0.3924 m2	woodS
Total cost of moulds	62.1562 EUR	woodcost

Revolutions per minute (RPM)
0
338.06666

I_RMS (A)
0
16.378322

Output files

Octave/Matlab variable file:

simulation-5662.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.20m

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:

Single Rotor with metal disk

Magnetic material:

NdFeB N52

Number of generator poles:

Magnet length:

46mm

Magnet width:

30mm

Magnet thickness:

10mm

Rotor disk thickness:

Calculated

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

Calculated

Stator thickness:

12mm

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:

true

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