Propel-E 450 - 8p - 70 x 70 - 13mm stator - 7mm air gap | Online Design Tools for Locally Manufactured Small Wind Turbines

Submitted by fromwastetowind on Thu, 10/07/2025 - 13:13

Duration:

00:00:25

Tabs

Results

Blade Rotor Outputs
Property	Value	Variable name
RPM at the cut-in wind speed (TSR)	78.1702 RPM	n_cut_in
RPM at the nominal wind speed (TSR)	312.681 RPM	n_nom
Nominal tip speed ratio	4	tsr_nom

Generator Rotor Outputs
Property	Value	Variable name
Rotor disk thickness	8 mm	hr
Magnet width-to-pole pitch ratio	0.714367	ai
Inner-to-outer magnet radius	0.561852	kd
Flux density in airgap	0.240424 T	Bmax
Flux density on magnet surface	0.240106 T	Bmg
First harmonic of flux density in airgap	0.244549 T	Bp
Flux per pole (Calculated)	0.00123236 Wb	Flux_pole
Magnets on a rotor disk	8	magnet_num
Distance between magnets	0.5 mm	dist_magnet_Rin
Magnet mass	13720 g	MagnetMass
Magnet density	5 g/cm3	mag_density
Volume of a single magnet	171500 mm3	Vmag
Volume of all magnets	2744000 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	327.105 mm	Dout
Average radius	124.763 mm	Ravg
Inner radius	89.7634 mm	Rin
Outer radius	163.552 mm	Rout
Effective outer radius	159.763 mm	Rout_eff
Mass of rotor disks	10.5818 kgr	BackIronMass
Volume of rotor disks	1344.57 cm3	BackIronVolume

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	1316	Nc
Copper wire diameter	0.71 mm	dc
Number of wires at hand	1	No_wires_at_hand
Winding fill factor	0.75	kf
Copper wire cross-sectional area	0.4 mm2	sc
Copper wire cross-sectional area (Calculated)	0.19994 mm²	sc_theor
Copper wire cross-sectional area of a sinlge wire	0.4 mm²	sc_multi_wires
Copper wire diameter (Calculated)	0.504678 mm	dc_theor
Coil leg width	53.9897 mm	wc
Average length of coil turn	344.904 mm	lavg
Stator nominal temperature	32.0671 C°	tc_real
Stator surface area	2234.55 cm²	stator_surface_area
Heat coefficient	0.0535096	cq_real
Current density	2.49925 A	Jmax_real
Resistivity of copper at nominal temperature	1.75728E-8 Ohm.m	pt
Resistance of a single coil	19.9404 Ohm	Rc
Phase resistance	39.8808 Ohm	Rphase
Phase inductance	0.368396 H	Ls
Nagaoka constant	0.11623	Kn
Winding coefficient	0.740754	kw
Volume of a single coil	242077 mm3	coil_volume
Weight of a single coil	1625.59 g	coil_weight_constr
Coil hole at Ravg	38 mm	coil_hole_Ravg
Coil hole at Rin	6 mm	coil_hole_Rin_constr
Coil hole at Rout	70 mm	coil_hole_Rout_constr
Coil mass for construction	11.3791 kgr	mcu_constr
EMF at the cut-in wind speed (Calculated)	55.5967 V	EMF_cut_in
EMF at the nominal wind speed (Calculated)	222.387 V	EMF_nom
Current at the nominal wind speed	0.999698 A	Iac_nom
Terminal voltage at the nominal wind speed	110.124 V	V_term_line
Nominal frequency	20.8454 Hz	fnom
Generator power (Calculated)	549.87 W	Pnom
Copper losses (Calculated)	119.57 W	Pcopper
Eddy current losses (Calculated)	0.20551 W	Peddy
Generator efficiency (Calculated)	0.798356	efficiency_real
AC Power at the rectifier (Calculated)	533.374 W	Pnom_rect
DC Power at the batteries (Calculated)	506.706 W	Pnom_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)	19.1077 W	Prot

Costs, Mass and Volume
Property	Value	Variable name
Total generator cost	414.793 EUR	Totalcost
Total generator mass	33.7533 kgr	TotalMass
Total generator volume	9.49601 dm3	TotalVolume
Blade rotor mass	2.54428 kgr	blade_rotor_mass
Softwood density	500 kgr/m³	softwood_density
Cost of magnets	199.708 EUR	Magcost
Magnet shipping cost	165.7 EUR	shippingcost
Copper mass	9.73874 kgr	mcu
Cost of copper	143.744 EUR	coppercost
Resin mass	-0.287182 kgr	resinmass
Cost of resin	-3.96681 EUR	resincost
Resin volume	-211.163 cm3	ResinVolume
Total mass of one generator rotor	12.1509 kgr	TotalMassRotor
Cost of iron	13.0156 EUR	ironcost
Surface area of moulds	0.39326 m2	woodS
Total cost of moulds	62.2924 EUR	woodcost

Output files

Octave/Matlab variable file:

simulation-9945.mat

Input parameters

Blade Rotor Inputs

Turbine radius:

1.10m

Aerodynamic coefficient:

0.40

Cut-in wind speed:

3.00m/s

Nominal wind speed:

9.00m/s

Cut-in TSR:

3.00

Design TSR:

4.00

Air density:

1.204kg/m³

Generator Rotor Inputs

AFPM rotor topology:

Double Rotor

Magnetic material:

Ferrite C8

Number of generator poles:

Magnet length:

70mm

Magnet width:

70mm

Magnet thickness:

35mm

Rotor disk thickness:

User Defined

Rotor disk thickness:

8mm

Mechanical clearance:

7.00mm

Generator Stator Inputs

Select coil type:

Triangular

Winder bolt size:

6.00mm

Winding fill factor:

User defined

Winding fill factor:

0.75

Stator thickness:

User defined

Stator thickness:

13mm

Current density:

5.00A/mm2

System Inputs

System voltage:

130.00V

Nominal voltage:

250.00V

Transmission cable losses:

3.00%

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

Also run UserAFPM:

false

Constants

Copper resistivity:

1.678E-8 Ω·m

Copper density:

8.94g/cm³

Iron density:

7.87g/cm³

Resin density:

1.36g/cm³