5-meter homemade wind generator. Part 3. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Alternative energy sources
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So, the next step is to screw the back of the rotor to the flange (hub). And again I warn you to be careful, because. the magnetic force of the rotor is very high!
Next, we lubricate all working parts and mount the hub with the rotor on the windmill frame. Then we can center the axle and insert the cotter pin into the nut that holds the axle.
We install the stator so that the gap between it and the rear rotor is about 2 mm.
In the picture above, you can see the front part of the rotor planted and the three bolts that we used to tighten it. The rotors, relative to each other, must be aligned in the magnetic field: the south pole of the front rotor must be opposite the north pole of the rear rotor. When we aligned them, we based them on the labels that we set in advance.
We are almost done with the windmill except for the woodwork.
The windmill blades were made for me by my friend and neighbor Scott. He has his own woodworking workshop. We didn't bother much with the shape of the blades. The width of the blades at their ends is 150 mm, in the widest part of the blades (at the base) the width is about 350 mm. The blade length is about 2 m, which gives a wind turbine diameter of about 5 meters. The blades at the ends have a slope of 3 degrees, and in the middle - 6. The front part of the blades is absolutely flat, this was done on a planer.
In the photo above, you can see the tips of the blades having a simple aerodynamic shape. At the ends of the blades, the thickness is about 20 mm, in the middle 40 mm and at the base it reaches 50 mm.
The blades will be placed between two hubs (flanges) made of plywood, 20 mm thick. Hub diameter - 660 mm.
Next, I painted the blades and covered them with a thick layer of linseed oil. Then installed them. Each of the blades will be pulled together with a hub with 3 bolts. A total of 9 bolts.
In the picture above, we measure the distances between the ends of the blades for their correct installation. After everything was put out, the blades were pulled together with the hub with bolts and additional screws. 15 screws per side, 90 screws in total.
Photos of the manufacture of the tail of the windmill, I forgot to do. The tail of the wind generator is arrow-shaped, about 60 cm wide, 130 cm long. It is made of very strong 60mm thick plywood. Painted black and well smeared with linseed oil. The tail is bolted to the tail boom with four bolts.
On this, the design of the wind generator is completed.
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Author: Koltykov A.V.; Publication: cxem.net
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