Nema Six & Three Blade Wind Turbine Generator
Print Profile(1)
Description
Hi,
after many months of design and testing here is my Nema Six and Three Blade Wind Turbine Generator. The blades drive a Nema 23 stepper motor. The power generated by the motor is sent through a home made rectifier ( see pics) producing a DC output. On mine I have added a cheap buck converter and a 2w 12v bulb which lights up when the wind is blowing. The highest voltage output I have seen it produce is 46v. I need some new test equiptment for current/wattage measuments, as soon as I find out i will update this description.
This is part of an ongoing experiment into creating 3d printable wind power. As always be carful around fast spining objects and electricity.
I came up with the six and three blade design to overcome the limits of the 3d printing area on my A1, and to increase the strength in the blades. They seem to work well together and I have had it running in some pretty rough wind with no problems with the blades. I printed mine in PLA basic from Bambu using the strength setting. Tree supports on the bed only and a brim where needed.
To fit the blades and other parts onto the shafts you will need to drive the shafts through. The shafts and parts are an interference fit. I size the holes at 10.1mm which seems to work best for this. I have noticed changes between the standard and strength setting when printing for this, standard will be looser on the shaft and strength is tight so I printed my using the strength setting. I used a hammer with a block of wood to drive the shafts through the prints. I also used thick cardboard tubing (pallet wrap) , sockets, a vice and some rags to support the print while doing this. I found chamfering the ends of the shafts also helped before and after fitting the prited parts, i used a bench grinder but you could use a hand file or other similar tooling. The flex coupling uses grub screws to fix itself to the shaft. Adding two flat spots to the end of the shaft where the grub screw will land prevents them from just spinning on the shaft.
I hope you have fun with this, remember it's an experiment and be careful.
R.W.W.
I used the following purchaced components to create my turbine along with th 3d printed parts.
Linear Rod 2pcs 10mm x 400mm & 1pcs 10mm x 300mm
M5 x 25mm Hex Head Bolts Set with Nylon Nuts and Washers
Flexible Coupling 8mmx10mm Aluminum Alloy Shaft Coupler Motor Connector Joint D19xL25
Thrust Bearing F10-18M x 1
1N5408 Rectifier Diodes General Purpose Silicon Rectifiers, 3A, 1000V
***Electrolytic Capacitor 1000uF 50V Aluminum*** Update 13-03-26, Im upping these to 1000uF 100v after spotting the originals have started to show signs of over heating. It could be age with mine, I have been using them for over a year now but better safe than sorry.
Nema 23 Stepper Motor 57x56mm Body 1.8 Stepper Angle 2.0A 2 Phase 4-Lead
6000RS Deep Groove Ball Bearings 10 x 26 x 8mm High Carbon Steel Double Sealed Bearings
Double Sided Prototype Universal Printed Circuit Board
M4 Nut and Bolt set 500 pcs + M4 spring washers
The set i have is not available at the moment but theres plenty out there.
The protototype board size that fits the model is 50mm x 70mm (as far as i remember)
Have a look on my Instagram Reels for updates
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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