How to make a wind generator from a car generator yourself?

If you want to make a wind generator from a car generator yourself , you will need to prepare all the tools and materials, as well as get acquainted with the methodology of the work. Quite often, carrying out this kind of work does not take away much of the master's time and effort, but the turner's services may have to be used. This statement, of course, is true only if you yourself are not a professional in this field. Be that as it may, a specialist of this profile will perform a minimum number of manipulations, which is why the rest of the work you can do yourself. As a result, it will be possible to obtain a design with a long service life.

Recommendations for manipulation

For the work can be used generator 95A at 12 V. At the first stage, it is recommended to remove the field winding and electronic control circuits. Now it is possible to remove the winding, and in its place place annular ferromagnets in an amount of 3 pieces, the size of each of which should be 85 x 35 x 15 millimeters. These elements need to be borrowed from loudspeakers.

How to exclude mistakes?

Installation should be carried out inside the so-called crabs, after manipulation, they will well attract iron elements. In order to exclude this phenomenon, it is necessary to plant everything on a metal shaft. This is due to the fact that the shaft has shunted the magnetic field lines through itself. If you decide to perform a wind generator from an automobile generator yourself, you may have to order a new shaft from a material that is not related to a magnet. To grind the shaft, you can find a piece of a titanium rod. After that, the rotor should be working properly. If the generator at 600 rpm produces only 4 V without load, then the stator will have to be rewound.

Technology of work

The master should increase the number of turns 5 times, this will reduce the diameter of the wire. At idle, the voltage will be 20 V. If you load using a light bulb borrowed from a car headlight with 60 candles, then the voltmeter will show 12 V, while the ammeter is 5 A. If it seems to you insignificant that a 1.3-kilowatt generator Produces 60 watts, you can use a reducer. This is due to the fact that 600 rpm is too small an indicator for comparison with the car's generator. Power will grow in proportion to the number of revolutions. If you can buy neodymium magnets, the size of which is 50 x 20 x 5 millimeters, in the amount of 12 pieces, you can make a new rotor.

Work on the rotor

If you decide to make a wind generator from a car generator yourself, you can make a rotor. To do this, it is necessary to prepare a scrap of aluminum, in which quality the old pistons from the internal combustion engine can perform. In a steel mug, aluminum scrap can be melted, and from the resulting blank, the ground of the rotor can be ground, this element can be placed on the old shaft from the first rotor. On the one hand, you should leave the edge, the width of which is 8 millimeters, and the rest of the aluminum should be removed with a tool, deepening to such a distance that it will be equal to the dimensions of the magnets and the metal band. To these parameters will need to add 5 millimeters.

Tips for working with a bandage

The wind generator from the car generator can be easily manufactured by hand. The bandage is easy to make of pieces of steel pipe, the diameter of which should be 100 millimeters. This workpiece should be planted against the stop in the side to the base. On the side, the master must make a markup, which will be represented by 12 sectors. Magnets must be fixed with glue on the metal bandage, while it is worth sticking to the previously made markings. Use the glue "Secunda", alternating with the polarity. Magnets after wrapped in wax paper, and the top is strengthened with adhesive tape so that the adhesive tape sticks to the edge. You will need to prepare the epoxy glue, gently pouring it into the space between the magnets. After the composition has hardened, it is necessary to balance the position of the rotor on parallel metal rulers, which must be squeezed horizontally in the vice through the edge of the board. These elements will rely on the rotor with their shaft, rolling like on rails. It is important to take into account that there should not be an imbalance.

Recommendations for working with shaft and sleeve

If you are thinking about how to make a windmill from an automobile generator, you should consider that the shaft diameter should be equivalent to 20 millimeters. At the end of this workpiece, there must be a thread and a key. A two-stage spacer sleeve is installed between the bearing and the propeller of the generator, the outer diameter should be as high as possible, only so that the propeller will be well pressed to the end. Behind the bearing inside the generator there must be a spacer sleeve, which must be placed in the rotor, or rather into the blank. After you assemble the generator, it may turn out that the magnetic sticking is excessively large, while turning the rotor mechanically will be quite difficult, despite the fact that the magnets are pasted with a slight skew.

Testing the generator

With your own hands the windmill from the car generator is simple enough to test the generator can be on the lathe. If everything is good, then the results should please. With the number of revolutions per minute at 125, it will give out 15.5 volts, while at 630 revolutions without load this figure will be 85.7 volts. If we are talking about the load on the nichrome wire at 630 rpm, then the voltmeter will show 31.2 volts, while the ammeter is 13.5 amperes. Thus, the power will be 421.2 watts. This indicates that neodymium magnets work 7 times more efficiently than ferrite magnets.

Nuances of works

When a wind generator is manufactured by one's own hands, it may be necessary to rewind the stator with a large wire diameter in order to reduce the stress. To reduce the magnetic sticking between the stator and the rotor, the stator plates can be moved. It should be noted that this work is very painstaking. With the angle grinder you can get rid of the seams, with a hammer and a knife should separate each plate. If you decide to perform a wind generator with your own hands, then a flat anvil may be needed in the work, on which it will be possible to level with light punches using a rubber hammer. Once you can separate the plates, you can use the help of the turner, ordering a recess of the rigging for assembly. The tool has in its composition a cylinder, the diameter of which is equivalent to the same index as the plates. The second flange will slide freely on the cylinder. In the flanges you need to do two oppositely located holes, the diameter of each of which is 6 millimeters. They are necessary for the installation of guide rods. The latter should have a diameter within 5 millimeters. The self-made wind generator from the car generator can be assembled by the master at the rigging, putting it on the cylinder in such a way that the rods are inside the oppositely located grooves. After the assembly, the rods can be tilted in all directions to the stop, clamping the plates with clamps in the amount of 4 pieces. The skew should be 13 millimeters with a plate height of 36 millimeters.

How to choose between rotary and drum wind turbines?

The wind generator itself can be made on the basis of a drum or rotor structure. The coefficient of removal of air masses will always be lower for drum structures than propeller ones. If you try to bring this parameter closer, then the device will turn out to be quite complicated. In this case, there is no way to avoid excessive financial costs at the same capacity. Among other things, the drum unit must have a very complex protection system that excludes separation. In view of this, the master quite often abandons this element in the design.

Recommendations for working with a propeller

A homemade wind generator from an automotive generator can not be performed without a propeller. After the rewinding of the stator can be carried out, it will be possible to start making one of the important parts. The blades can be three, and they need to be cut from a duralumin pipe, the length of which is 1 meter. At the very beginning, the width of the element should be 120 millimeters, while at the very end it should be 50 millimeters. Inside is a metal disk with a diameter of 100 millimeters. Its thickness should be equivalent to a value of 2.5 millimeters. For rivets, holes will need to be made, and blades must be installed between them and the upper mahas. The ends of the latter will need to be adjusted taking into account that an equilateral triangle is obtained. When a windmill is running from an automobile generator, it will be necessary to perform balancing by suspending the propeller on the thread through the central part.

From excess weight it will be possible to get rid of using an angle grinder, which is supplied with an emery cloth. The blades should be well polished. You will need to prepare a frame from the metal corner to fix the generator, the tail axis is welded to it. Should be attached to the body of the generator paws, which will allow fixation to the frame.

Conclusion

A wind generator from an autogenerator can produce some sounds during operation. The reason is that in the non-working state, the step from the end of the blades to the mast is only 12 centimeters. Centrifugal force does not allow the blades to bend, and the ends of the blades approach the mast, depending on the strength of the wind. The wind generator from the car generator has many pluses, and the creation of some noise during operation can not be called an obvious minus.