1.2mtrial1Magna | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by kimon007 on Sun, 28/07/2019 - 05:18

Duration:

00:05:26

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	362.261 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	639.677 RPM	n_nom
Nominal tip speed ratio	3.65198	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	338 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	24 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	3.2656 m/s	cutin_Vw
Mechanical power (Torque)	289.806 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.568987	ai
Inner-to-outer magnet radius	0.745624	kd
Flux density in airgap	0.243789 T	Bmax
Flux density on magnet surface	0.365707 T	Bmg
First harmonic of flux density in airgap	0.214193 T	Bp
Flux per pole (Calculated)	0.000522969 Wb	Flux_pole
Magnets on a rotor disk	8	magnet_num
Distance between magnets	23.0644 mm	dist_magnet_Rin
Magnet mass	1656 g	MagnetMass
Magnet density	7.5 g/cm3	mag_density
Volume of a single magnet	13800 mm3	Vmag
Volume of all magnets	220800 mm3	VolumeMagnet
Remanent magnetic flux density	1.265 T	Br
Magnetic coercivity	982324 A/m	Hc
Maximum Energy Product	326 KJ/m³	BHmax
Outer diameter	240.315 mm	Dout
Average radius	102.936 mm	Ravg
Inner radius	87.9355 mm	Rin
Outer radius	120.157 mm	Rout
Effective outer radius	117.936 mm	Rout_eff
Mass of rotor disks	2.85572 kgr	BackIronMass
Volume of rotor disks	362.861 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	1.3152 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	2	q
Total number of coils in stator	6	coil_num
Number of turns per coil	151	Nc
Copper wire diameter	1.18 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.55	kf
Copper wire cross-sectional area	1.09 mm2	sc
Copper wire cross-sectional area (Calculated)	1.00241 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	1.09 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.13003 mm	dc_theor
Coil leg width	23.0196 mm	wc
Average length of coil turn	224.281 mm	lavg
Stator nominal temperature	47.1403 C°	tc_real
Stator surface area	619.544 cm²	stator_surface_area
Heat coefficient	0.141025	cq_real
Current density	4.59823 A	Jmax_real
Resistivity of copper at nominal temperature	1.86569E-8 Ohm.m	pt
Resistance of a single coil	0.579672 Ohm	Rc
Phase resistance	1.15934 Ohm	Rphase
Phase inductance	0.0034163 H	Ls
Nagaoka constant	0.19361	Kn
Winding coefficient	0.604216	kw
Volume of a single coil	67117.3 mm3	coil_volume
Weight of a single coil	334.387 g	coil_weight_constr
Coil hole at Ravg	46 mm	coil_hole_Ravg
Coil hole at Rin	46 mm	coil_hole_Rin_constr
Coil hole at Rout	46 mm	coil_hole_Rout_constr
Coil mass for construction	2.34071 kgr	mcu_constr
RMS flux linkage of phase A	0.035461 Wb	FluxRmsA
RMS flux linkage of phase B	0.0350529 Wb	FluxRmsB
RMS flux linkage of phase C	0.0353719 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	10.264 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	18.0713 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	18.8614 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	18.9043 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	18.8692 V	V_rmsC
Current at the nominal wind speed	5.01207 A	Iac_nom
Terminal voltage at the nominal wind speed	11.2904 V	V_term_line
Nominal frequency	42.6451 Hz	fnom
Generator power (Calculated)	169.765 W	Pnom
Generator power (Torque)	191.006 W	PelN_Torque_x
Electromagnetic power (Torque)	278.761 W	PHMN_Torque_x
Copper losses (Calculated)	87.3711 W	Pcopper
Copper losses (Torque)	87.3711 W	PcopperN_Torque_x
Eddy current losses (Torque)	0.3841 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.659082	efftotalN_Torque_x
Generator efficiency (Calculated)	0.631195	efficiency_real
AC Power at the rectifier (Calculated)	152.788 W	Pnom_rect
AC Power at the rectifier (Torque)	171.905 W	PelN_Torque_x_rect
DC Power at the batteries (Calculated)	137.51 W	Pnom_dc
DC Power at the batteries (Torque)	154.715 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)	11.045 W	Prot
Rotational losses (Torque)	11.045 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	252.694 EUR	Totalcost
Total generator mass	7.94041 kgr	TotalMass
Total generator volume	1.54216 dm3	TotalVolume
Blade rotor mass	0.412897 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	153.703 EUR	Magcost
Magnet shipping cost	13.3333 EUR	shippingcost
Copper mass	1.98009 kgr	mcu
Cost of copper	29.2262 EUR	coppercost
Resin mass	1.44861 kgr	resinmass
Cost of resin	20.0094 EUR	resincost
Resin volume	1065.15 cm3	ResinVolume
Total mass of one generator rotor	4.51172 kgr	TotalMassRotor
Cost of iron	3.51253 EUR	ironcost
Surface area of moulds	0.29194 m2	woodS
Total cost of moulds	46.2433 EUR	woodcost

Revolutions per minute (RPM)
0
639.677223

I_RMS (A)
0
5.012068

Output files

Octave/Matlab variable file:

simulation-6129.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

0.60m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

3.50m/s

Nominal wind speed:

11.00m/s

Cut-in TSR:

6.50

Design TSR:

3.50

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Single Rotor

Magnetic material:

NdFeB N40

Number of generator poles:

Magnet length:

30mm

Magnet width:

46mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Rectangular

Winding fill factor:

User defined

Winding fill factor:

0.55

Stator thickness:

13mm

Current density:

5.00A/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