kierroskone 0.85efff | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by Juntunenn on Sun, 29/11/2020 - 18:09

Duration:

00:04:08

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	258.758 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	448.541 RPM	n_nom
Nominal tip speed ratio	5.12152	tsr_nom
RPM at the cut-in wind speed (Flux Linkage)	366 RPM	cutin_RPM
Cut-in Voltage (Flux Linkage)	48 V	cutin_Voltage
Wind speed at cut-in RPM (Flux Linkage)	7.07225 m/s	cutin_Vw
Mechanical power (Torque)	740.803 W	Pmech_Torque_x

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.778053	ai
Inner-to-outer magnet radius	0.858071	kd
Flux density in airgap	0.141776 T	Bmax
Flux density on magnet surface	0.184159 T	Bmg
First harmonic of flux density in airgap	0.138284 T	Bp
Flux per pole (Calculated)	0.000147438 Wb	Flux_pole
Magnets on a rotor disk	64	magnet_num
Distance between magnets	3.7417 mm	dist_magnet_Rin
Magnet mass	5120 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	8000 mm3	Vmag
Volume of all magnets	1024000 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	564.016 mm	Dout
Average radius	261.831 mm	Ravg
Inner radius	241.831 mm	Rin
Outer radius	282.008 mm	Rout
Effective outer radius	281.831 mm	Rout_eff
Mass of rotor disks	31.4607 kgr	BackIronMass
Volume of rotor disks	3997.54 cm3	BackIronVolume
Maximum flux density in the magnet rotor disk	0.344386 T	SaturMAX
Is the magnet rotor disk saturated?	No	Saturation

Generator Stator Outputs
Property	Value	Variable name
Stator thickness	10 mm	tw
Number of phases	3	nphase
Number of coils per phase	16	q
Total number of coils in stator	48	coil_num
Number of turns per coil	15	Nc
Copper wire diameter	1.7 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.5	kf
Copper wire cross-sectional area	2.27 mm2	sc
Copper wire cross-sectional area (Calculated)	2.02912 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	2.27 mm²	sc_multi_wires
Copper wire diameter (Calculated)	1.60775 mm	dc_theor
Coil leg width	6.8781 mm	wc
Average length of coil turn	129.554 mm	lavg
Stator nominal temperature	37.7831 C°	tc_real
Stator surface area	855.441 cm²	stator_surface_area
Heat coefficient	0.0890811	cq_real
Current density	4.46942 A	Jmax_real
Resistivity of copper at nominal temperature	1.80162E-8 Ohm.m	pt
Resistance of a single coil	0.0154234 Ohm	Rc
Phase resistance	0.246774 Ohm	Rphase
Phase inductance	0.000170676 H	Ls
Nagaoka constant	0.282468	Kn
Winding coefficient	0.95	kw
Volume of a single coil	8910.84 mm3	coil_volume
Weight of a single coil	44.6954 g	coil_weight_constr
Coil hole at Ravg	20 mm	coil_hole_Ravg
Coil hole at Rin	17.3956 mm	coil_hole_Rin_constr
Coil hole at Rout	22.6293 mm	coil_hole_Rout_constr
Coil mass for construction	2.19007 kgr	mcu_constr
RMS flux linkage of phase A	0.00102175 Wb	FluxRmsA
RMS flux linkage of phase B	0.000982713 Wb	FluxRmsB
RMS flux linkage of phase C	0.00101499 Wb	FluxRmsC
EMF at the cut-in wind speed (Calculated)	20.528 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	35.71 V	EMF_nom
RMS of EMF of phase A (Flux Linkage)	23.6511 V	V_rmsA
RMS of EMF of phase B (Flux Linkage)	23.8305 V	V_rmsB
RMS of EMF of phase C (Flux Linkage)	23.672 V	V_rmsC
Current at the nominal wind speed	10.1456 A	Iac_nom
Terminal voltage at the nominal wind speed	30.5782 V	V_term_line
Nominal frequency	239.222 Hz	fnom
Generator power (Calculated)	930.701 W	Pnom
Generator power (Torque)	622.662 W	PelN_Torque_x
Electromagnetic power (Torque)	701.697 W	PHMN_Torque_x
Copper losses (Calculated)	76.2036 W	Pcopper
Copper losses (Torque)	76.2036 W	PcopperN_Torque_x
Eddy current losses (Torque)	2.8313 W	PeddyN_Torque_x
Generator efficiency (Torque)	0.840523	efftotalN_Torque_x
Generator efficiency (Calculated)	0.851977	efficiency_real
AC Power at the rectifier (Calculated)	837.631 W	Pnom_rect
AC Power at the rectifier (Torque)	560.396 W	PelN_Torque_x_rect
DC Power at the batteries (Calculated)	753.868 W	Pnom_dc
DC Power at the batteries (Torque)	504.356 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)	39.106 W	Prot
Rotational losses (Torque)	39.106 W	ProtN_Torque_x

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	341.523 EUR	Totalcost
Total generator mass	40.7915 kgr	TotalMass
Total generator volume	12.992 dm3	TotalVolume
Blade rotor mass	3.30317 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	124.62 EUR	Magcost
Magnet shipping cost	61.8357 EUR	shippingcost
Copper mass	1.89298 kgr	mcu
Cost of copper	27.9404 EUR	coppercost
Resin mass	2.31787 kgr	resinmass
Cost of resin	32.0165 EUR	resincost
Resin volume	1704.32 cm3	ResinVolume
Total mass of one generator rotor	18.2903 kgr	TotalMassRotor
Cost of iron	38.6966 EUR	ironcost
Surface area of moulds	0.746524 m2	woodS
Total cost of moulds	118.249 EUR	woodcost

Revolutions per minute (RPM)
0
89.708128
179.416255
269.124383
358.83251
448.540638

I_RMS (A)
0
2.536397
5.072793
7.60919
10.145586

Output files

Octave/Matlab variable file:

simulation-6838.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.20m

Aerodynamic coefficient:

0.30

Cut-in wind speed:

5.00m/s

Nominal wind speed:

11.00m/s

Cut-in TSR:

6.50

Design TSR:

4.10

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

40mm

Magnet width:

20mm

Magnet thickness:

10mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

3.00mm

Generator Stator Inputs

Select coil type:

Keyhole

Winding fill factor:

User defined

Winding fill factor:

0.50

Stator thickness:

User defined

Stator thickness:

10mm

Current density:

5.00A/mm2

System Inputs

System voltage:

48.00V

Nominal voltage:

65.00V

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:

Fine mesh

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³