The computer “system unit” gathering dust on the balcony deserves a more worthy use. For example, the capabilities of the old cooler, which until recently cooled the processor, are very interesting. A little ingenuity and patience - and on its basis it is possible. Of course, it is not enough to power the entire house, but it is enough to power small appliances or devices. A normal 12km/h wind will easily cause the generator to produce about 2V for a small radio, lamp or clock mechanism.

Why is it profitable to domini wind generator from a computer cooler

The following advantages are definitely worth noting:

the device is fully assembled, and you don’t have to fiddle with small parts;
the cooler is adapted for rotation by default, and in its additional settings no need;
you save on purchasing additional parts;
It’s not difficult to get the old cooler out of your computer, and you can immediately start assembling the device.

List of required materials

In addition to an old cooler of relatively large size, for work you will need:

thick plastic bottle;
wire designed to operate under low voltage;
small wooden block 1.5 inches in diameter;
metal tubes that fit into one another;
epoxy and superglue;
unnecessary CD;
tightening clamps.

All of the above can be easily found in your home pantry or purchased at the nearest market.

To quickly produce a working device and not waste time on fixing and repairing it, build the generator assembly in the following sequence:

A computer cooler is “tailored” to its main tasks. Therefore, for its magical transformation into a generator, unnecessary parts must be removed. Remove the rubber seal and the retaining ring hidden underneath it. This will allow you to remove the “extra” cooler blades, since they will be replaced by larger ones.
On the copper coils of the cooler winding, find the connection points of the wires. These are connectors. One of them has two wires, the others have one each. To the latter you need to add one additional wire, carefully soldering them to the connection.
The alternating current that will be generated in the new generator must be converted to direct current. This will require 4 diodes. They are cut in pairs to a distance of 1 cm: one pair is at the edge with black strokes, the other is on the opposite side. The long ends are bent so that the shape of the diode resembles the letter P. The cut diodes are soldered. At the same time, a wire of the required length is connected to the fan.
Now you can test the device. To do this, you will need a household tester or LEDs. Connect them to a cooler, spin it up and see if it manages to generate electrical energy.

After electrical part completely ready, you can start building a mini wind generator:

The basis of the design of the blades is the dense plastic of a clean water bottle, shampoo or household chemicals. After cutting the bottom and top with a lid, the resulting cylinder is cut lengthwise.
Draw a drawing of the blade on paper. Its length depends on the length of the plastic cylinder obtained from the bottle. An angle of 120 degrees is cut at the end of the blade for subsequent convenient connection.
When cutting out the blades, pay attention to their complete coincidence in size. Otherwise, it is necessary to align the elements so that they work in the same mode.

At the next stage, the blades are connected to the cooler. The parts are glued one by one to its plastic side using superglue. The curved shape of the blades will provide excellent aerodynamics and rotation efficiency. Therefore, there is no need to align the parts. As a support finished design A wooden block will serve as the blades.

A CD should be used to make the shank. A through hole is made in the block along the diameter of the metal tube. If the hole is larger, it can be sealed epoxy glue. Also using adhesive composition You can process the places where the wires are soldered and the connection point between the timber and the cooler. The disk shank is inserted into a small cut at the end of the block and then fixed with thin screws through through holes at the place of the cut.

At the final stage of installation, a metal tube of a larger diameter is inserted into a smaller one, already connected to the generator structure. PTFE can be used as a bearing to ensure rotation of the inner tube.

To make sure that the mini wind generator you made from a motor is working properly, carry out final testing. All that remains is to find a suitable place for the new device and install it.

How to make a wind generator from computer fan. Mini Wind Turbine. If you were affected by this video, please support it by liking it or leaving a review, your support is very important to me. Repost it on social networks. My channel exists thanks to the feasible financial support of grateful viewers. THANK YOU! Today it is not easy for scientific channels to survive, there is only politics and war around... QIWI +380979363329 WebMoney (U333875824154; Z287234330137; R287776577874) Yandex money 410011260810394 PrivatBank card 5168 7423 4754 5463 By system https://www.liqpay.com/ru to my personal phone (+38) 067-393-13-82 Or by any private transfer to me personally, Ukraine, Kharkov, BELETSKIY IGOR LEONIDOVICH Subscribe, order experiments, take an active part in the life of my channel https://www.youtube.com/user/Igorbeleckii Model giveaway http://www.physicstoys.narod.ru/page/Yniver.html For any questions, write to me by email [email protected]. Visit my website http://www.physicstoys.narod.ru. I (Igor Beletsky) investigate physical phenomena, test theories and demonstrate the result. Witness the miraculous transformation of energy from one type to another. Entertaining physics, scientific experiments, spectacular experiments, technical homemade products, ideas, hypotheses, inventions and revelations. Stirling engine, steam engine, steam turbine, electricity generator, electric generator, magnetism, magnetic levitation, magnetic engine, magnetic bearing, magnetic suspension, flywheel energy storage, super flywheel, water pump, solar concentrator, steam gun, steam rocket, perpetual motion machine, free energy and much more. Stirling engine, Steam engine, Steam Turbine, Generator, Linear Electric Generator, Free Piston Engine, Steam Machine, Thermal Lag Engine, Harwell Thermomechanical Generator TMG, Thermoacoustic Stirling engine, Magnetic Bearing, Magnetic Levitation, Solar concentrator, perpetuum mobile, magnet motor, free energy, water pump. Entertaining Physics, scientific experiments, spectacular experiments, technical homemade products, ideas, hypotheses, inventions and revelations. Stirling engine, steam engine, steam turbine, electricity generator, electric generator, magnets, magnetic levitation, magnetic engine, magnetic bearing, magnetic suspension, flywheel energy storage, super flywheel, perpetual motion machine, fuel-free generator, free energy, water pump, solar concentrator. Stirling engine, Magnet, Steam engine, Steam Turbine, Generator, Linear Electric Generator, Free Piston Engine, Steam Machine, Thermal Lag Engine, Harwell Thermomechanical Generator TMG, Thermoacoustic Stirling engine, Solar concentrator, Magnetic Bearing, Magnetic Levitation, perpetuum mobile, magnet motor, free energy, water pump. My site

How to assemble a perpetual motion machine from a cooler and magnets? Here are the instructions:. How to make a generator from a cooler

Wind generator from a fan: making it yourself

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Scope of application

It would seem that it would be easier to make a wind generator using a fan as a basis? However, several obstacles will stand in the way of such a technical transformation. This article will tell you how to overcome them, for which a wind power station made from a fan can be used. It’s worth making a reservation right away: you shouldn’t expect that the fruit of your labors will be a unit that can charge industrial batteries or heat buildings. Charging a mobile phone, or operating a small LED illuminator - approximately such tasks can be solved by a wind generator, which is, so to speak, a product of deep processing of a fan.

Why do such externally similar devices require effort to transform into each other? There are technical explanations for this that are worth considering.

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Differences

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Design features of electric motors and generators

The movement of electrons, electric current, occurs in a conductor under the influence of a changing external magnetic field. Electric motors are designed similarly, only in the reverse order - a force acts on moving charged particles in a magnetic field, which forces the conductor to change its position in space, i.e. causes the rotor to move.

Both in generators and in engines, this same magnetic field is created in the stator or rotor, depending on the model, by permanent magnets or electromagnets (excitation windings). If the motor attracts iron objects, it is on permanent magnets. This option is optimal from the point of view of using it as a generator, since it does not require any modernization.

“Using a motor with excitation windings to generate electricity will be more difficult, because you will have to provide power to these same windings. And this will significantly complicate the design.”

This is how a car generator actually works. 12V is supplied to the rotor through the “tablet”, brushes and slip rings. The magnetic field it creates rotates along with the rotor. This is what creates an electric current in the stator winding (of course, more current is generated than is consumed, otherwise why would a generator be needed).

When the battery is fully charged and powerful consumers are turned off, almost no current is supplied to the rotor and the generator rotates idle. And using a self-generator as a wind power plant, this current will have to be supplied and its parameters controlled.

Sometimes it is proposed to remove the windings from the rotor in such a case and glue in neodymium permanent magnets instead of wire (in this case no current is needed), but this is a topic for a separate article. to contents

Features of blade geometry

Since the design of the fan meets the goal of pushing a mass of air, and the blades of a wind generator, on the contrary, are driven by currents of air masses, the geometry will differ slightly. The angle of attack of the tips of the blades of both types differs little.
The closer you move to the center, differences are observed.

Wind farm propeller: The section of the blade at the center practically does not participate in energy generation, since it moves many times slower than the entire blade, so it is made with an angle of attack equal to zero so that air masses can easily pass through without creating congestion in the form of turbulence. A stationary fan does not need to change the angle of attack of the blade.

Since the overall geometry is similar, the fan propeller will also work as a wind generator.

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Manufacturing examples

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From a children's toy battery-powered fan

Making such a wind generator is as easy as shelling pears. The toy uses an electric motor most often of 1.5 or 4.5 volts with independent excitation from permanent magnets. There is a ready-made screw. You need to take out the batteries, connect the wires to the + and − contacts, place the fan in the air flow, turn it on, and you can measure the characteristics of the generated current at the contacts.

In order for such a wind generator to work better, it would not hurt to add power to the propeller blades, for example, with pads cut from plastic pipe in the shape of petals. Well, you will have to equip the unit with some other elements required for an electric windmill.

The fan will have to be protected from precipitation with a special casing and mounted on a movable frame. The movable fastening of the frame to the mast must include a contact-brush mechanism (without it, the current cannot be transmitted down). The opposite end of the frame is equipped with a stabilizer; its task is to turn the wind generator towards the air flow.

What you can count on if the engine is 4.5V is 2.5...3V maximum, not even enough to charge a phone (usually 5V). But such a device, with sufficient wind, is quite capable of providing power to LEDs, which, for example, can be used to mark the boundaries of an entrance gate or illuminate the boundaries of a garden path.

The differences are that:

the cooler blades are no good initially - the propeller needs a new one;
the generated current at a certain wind speed is quite enough to charge an Android or 5V tablet (using a controller in this case cannot be avoided and cannot be would be better suited regular car charger).

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From a car engine radiator cooling fan

The option is more complicated, but if the previous options were initially considered as toys, then this design can have quite tangible returns. The wind generator in question can serve, for example, to charge a 12V battery. The electricity stored in the battery, passed through a 12/220 converter, can be used as a home network.

The design uses a 24V fan motor. The blades are shortened, leaving only the fragments necessary for attaching new ones - cut from PVC pipes(it will not be possible to use PVC bottles for these purposes - due to their low rigidity, they will simply be bent by the wind).

The blades are cut out approximately according to the same pattern as in the photo.
The number of blades can be any; the most commonly used options are 3, 4 or 6.

The wind generator is assembled according to the classical scheme (Fig. 3). The voltage generated by it at a moderate 4...7 m/s will be more than 12V, which will allow charging the battery. A diode must be added to the electrical circuit so that if there is no wind, the power plant does not turn into a fan on a mast.

A battery charging controller, which regulates the charging current and opens the circuit when charging is complete, will also help. You can do without it, but then you will have to constantly monitor the charging process and adjust it manually.

mienergii.ru

We build a mini wind generator from an old computer cooler

Do you have old and unnecessary computer components lying around? Look there and look for a fan for cooling the processor, the so-called cooler. Eat? Great. Now I will tell you how to make it work in a mode that is not entirely familiar to it. Now it will not absorb energy for subsequent cooling of the processor, but, on the contrary, will generate it. Yes, I didn't make a mistake. I used it as the main element in my mini wind generator. With a wind of 12 km/h, or 3.3 m/s usual for meteorology, it allows you to generate electricity with a voltage of 1.5 - 2 volts and a current of 20 milliamps.

What materials will we need?

A thick plastic bottle - an old fan for cooling the processor (cooler), the bigger the better - several meters of low-current wire - a wooden block round section with a diameter of 1.5 inches and a length of 20 cm. - two metal tubes with one end into the other - 4 Schottky diodes - epoxy glue - super glue - tie ties - an old CD disk

So, let’s look at the steps of manufacturing a mini-wind generator step by step.

Disassembling the cooler

The propeller is usually held on the motor shaft by a retaining ring. Often it is hidden under rubber seal. Once you remove it, you will see a retaining ring that you can remove with a small flathead screwdriver. Did it work? If so, then the standard fan blades can be safely removed.

Soldering wires

Take a look at the copper fan coils, there may be two or three wire connections, these are the coil connectors. One of the sections has two copper wires connected, while the other two have only one. You must solder two wires to the legs having only one copper wire.

The rectifier converts alternating current into direct current. Need 4 diodes. We cut them so that on one pair on one side (with black strokes) there remains 1 cm, similarly on the other pair, only on the opposite side. We bend the long ends. You should get a figure in the shape of the letter “P”. We solder everything together. Solder the wires coming out of the fan to the length you need.

You can test whether the generator is working by connecting LEDs to the output, or a tester. Give it a good spin and see if it works.

Remove all unnecessary plastic

We remove the outer plastic that protects the blades, and the blades themselves. You can simply break off the blades and then refine the unevenness with a knife.

Making the blades of the future wind generator

The blades are cut from a thick plastic bottle; a regular plastic bottle with thin walls will not work. A bottle of bleach or shampoo works great. Cut off the top and bottom of the bottle. We get a cylinder. Cut it lengthwise.

Next, it is better to make a template of the blades on paper and draw it on plastic. Be careful that the blades are the same size. There are no particularly precise dimensions here. The length of the blades is determined by the length of the bottle. For convenient further joining, the end of the joint of the blades is cut at an angle of 120 degrees.

Bonding blades and cooler

We glue the three blades using superglue to the plastic side of the cooler. By the way, if you are thinking about the curvature of the blades, then I assure you that the natural curve of a plastic bottle works perfectly. Generally, no greater bending angle is required.

Wind turbine tail

The motor is glued to wooden block round cross-section, which rotates on metal tubes.

We make the shank from an old CD. We drill a hole through the wooden block, the diameter of a metal tube. If the tube is not seated tightly, you can seal it with epoxy glue. Then I cut a hole at the end of the block to insert a CD. We drill a couple of holes through the block and CD and tighten them with screws.

The junction of the motor and the bar along the edges can be treated with epoxy glue. You can also treat wire and soldering joints to protect against corrosion.

Making supports

It would be good to make the support from two tubes. One in our case is already attached to a wooden block, but the second should be organized with rotation relative to the first. Can be done using plain bearings in a pipe of larger diameter. PTFE can be used as a sliding bearing material.

www.yaprofi.net

How to make a wind generator from a cooler with your own hands

The most logical use of a computer fan for other purposes is, of course, a wind generator. The simplicity and affordability of a computer cooler has inspired many DIYers. The idea of creating a portable charger for mobile devices with your own hands haunts many. So the author of this wonderful video tutorial has long wanted to check - what is this turntable really capable of?

We take any case fan, the larger the diameter, the better. Many naively believe that its electric motor will immediately turn into a generator, as soon as it is turned. However, the maximum that it is capable of in this design is to light a weak LED. Is this really the limit? Why so little? To understand the reason, you need to look inside the device. The trick is that such coolers have a brushless motor. It is not structurally designed to work in reverse mode as a generator, and here's why: its windings are wound in series double wire, and even opposite to each other, and the poles of the magnet alternate. Therefore, when the fan rotates, a back-emf will arise in the coils and such a generator will be ineffective.

The first method of reconstructing a cooler into a current generator

The first way out of this situation is to try to cure the original motor, that is, rewind the stator with a new wire. Of course, this procedure is very painstaking, but for those who know how to work with their hands it is quite feasible. And for educational purposes it is even useful. The main thing now is to alternate the directions of winding the wire on each core. Thus, we get the simplest single-phase alternating current generator. The coils are connected to each other in series. The greater the number of turns and thinner than wire, the better. The beginning of the first coil and the end of the last will be the terminals of our generator, respectively. Now you can assemble everything and check it. But do not forget that the voltage will be variable. Therefore, you need to make a simple straightener or buy a ready-made one. After this entire treatment procedure, the results certainly improved, but not radically. The reason for this may be too big gap between the stator and the rotor, and a weak magnetic field

Ring magnet. It would be a stretch to call it a magnet. Plus, the rectifier still consumes from one to two volts. Unfortunately, such a rework did not justify itself.

You can buy it ready-made in this Chinese store.

The second option for converting a cooler into a windmill

Well, let's move on to plan B. Let's take a regular brush motor from a printer. It easily turns into a generator without any modifications. And thanks to the mechanical commutator, when rotating, it immediately produces direct current. And no rectifiers are needed. Its starting force is minimal, which is important for a small impeller. However, it should be noted that for efficient work it requires high speeds, and therefore wind speed. Let's see what we can survive from it by conducting a series of tests. We can conclude that in wind speeds up to five meters per second there is nothing to catch at all, but in the range from five to ten meters per second it is quite possible to power a large LED flashlight and in practice use it for emergency lighting small rooms, corridors, street paths or as a beacon. You can dispense with batteries in a small radio, and if you add a storage device in the form of an ionistor to the circuit, the problem with gusts of wind will be solved and the design will become more practical. If you live in a high-rise building, then it is ideal to place such a wind generator on the balcony and find a use for it. But about charging mobile phones such a windmill, you will have to forget. There just isn't enough power. Getting the voltage up is not a problem; the phone’s circuitry will work for that and will show the charging process, but the current will be no more than 50 mA with a wind of about ten meters per second. And this is meager power. For normal charging you need ten times more. Alas, this is only possible with hurricane winds. By the way, the big advantage of a small windmill is that it is not afraid of strong gusts of wind and therefore does not need protection, and the cheapness and simplicity of the design can awaken the imagination much more more DIYers who are able to create miracles with their own hands. The process of making a windmill from a computer cooler is shown in detail in the video.

izobreteniya.net

Free electricity in mini volumes will help you quickly understand the power of free energy. You will need an old fan (aka cooler) from a computer and three neodymium magnets. This simple version of the BTG fuel-free generator, a miniature of large generators free electricity.

This is what a finished perpetual motion machine, also known as an electricity generator, looks like:

Here's what you'll need to build a perpetual generator:

Three neodymium magnets
Fan from the system unit
12 volt light bulb
Current loop diode

As well as a wooden platform (or any one of your choice), as well as glue gun.

1. Cooler

2. Thin neodymium magnets:

3. 12 volt light bulb (35 W)

here is the marking

4. Diode

Let's start assembly.

Apply glue to the blade and glue it.

second magnet on the opposite side

glue it the same way

You don’t need to do this! - initially there was a desire to make 4 magnets, but they were larger and heavier, so the cooler engine did not work.

here is the error

and so on in the end - until two large ones come off.

Step No. 2 (assembling the energy generator on the plateau)

glue a cooler to it

It’s better to glue it well, otherwise there will be vibration...

glue the lamp to the cooler

here's the end result:

Step No. 3 (solder the wires and diode)

first wire through diode

the second one directly to the light bulb

Let's start testing the generator!

Pre-peel off two magnets, so it will be easier for you.. you only need to glue two

We bring the magnet

movement begins

the revs increase, the lamp burns brighter

Having found the ideal point for the placement of the magnet, glue it.

Now you can start the perpetual motion machine with a push of your finger...

Free Energy to you!

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We have put together a collection of instructions, models, and BTG drawings that you can assemble too. Join the closed community of FreeTeslaEnergy enthusiasts

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How to make a wind generator from scrap materials

Every year people search for alternative sources. Homemade power station from an old one car generator It will come in handy in remote areas where there is no connection to the general network. It will be able to freely charge batteries, and will also ensure the operation of several household appliances and lighting. You decide where to use the energy that will be generated, as well as collect it yourself or purchase it from manufacturers, of whom there are plenty on the market. In this article, we will help you figure out how to assemble a wind generator with your own hands from the materials that any owner always has.

Let's consider the operating principle of a wind power plant. Under a fast wind flow, the rotor and propellers are activated, after which the main shaft begins to move, rotating the gearbox, and then generation occurs. At the output we get electricity. Therefore, the higher the rotation speed of the mechanism, the greater the productivity. Accordingly, when locating structures, it is necessary to take into account the terrain, relief, and know the areas of the territories where the vortex speed is high.

Instructions for assembling a windmill from a car generator

To do this, you will need to prepare all the necessary components in advance. The most important element is the generator. It is best to take a tractor or bus, it can generate much more energy. But if this is not possible, then it is more likely to make do with weaker units. To assemble the device, in addition to the autogenerator, you will need: a voltmeter; battery charging relay; steel for making blades; 12 volt battery; wire box; 4 bolts with nuts and washers; clamps for attaching the generator.

Make your own wind generator using a car generator in video instructions

Assembling a windmill device for a 220V home

When everything you need is ready, proceed to assembly. Each of the options may have additional details, but they are clearly stated directly in the manual. First of all, you need to assemble a wind wheel - the main structural element, because it is this part that will convert wind energy into mechanical energy. It is best if it has 4 blades. Remember that the fewer blades a windmill has, the more mechanical vibration it will experience and the more difficult it will be to balance it. Made from sheet steel or iron barrel. The uniform they should wear is not the same as you saw in the old windmills, but resembling a wing-type blade. They have much lower aerodynamic drag and higher efficiency. After you use a grinder to cut out a windmill with blades with a diameter of 1.2-1.8 meters, you need to attach it together with the rotor to the c-axis of the generator, drilling holes and connecting with bolts.

Assembling the electrical circuit

We secure the wires and connect them directly to the battery and voltage converter. You need to use everything that in school physics lessons you were taught to make when assembling electrical diagram. Before starting development, think about what kW you need. It is important to note that automobile generators without subsequent conversion to magnets and rewinding of the stator are not at all suitable; operating speeds are 1.2 thousand-6 thousand rpm, and this is not enough to produce energy. It is for this reason that it is necessary to get rid of the excitation coil. To increase the voltage level, you need to rewind the stator with a thin wire. As a rule, the resulting power at 10 m/s will be 150-300 watts. After assembly, the rotor will magnetize well, as if power was connected to it.

Rotary homemade wind generators They are very reliable in operation and economically beneficial; their only imperfection is the fear of strong gusts of wind. The principle of operation is simple - a vortex through the blades causes the generator to spin. In the process of these intense rotations, energy is generated, the tension you need. Such a power plant is a very successful way to provide electricity small house, of course, its power will not be enough to pump water out of a well, but it is possible to watch TV or turn on the lights in all rooms with its help.

Windmill using a car generator.

From a home fan

The fan itself may not be in working condition, but only a few parts are required from it - a stand and the screw itself. For the design you will need a small stepper motor soldered with a diode bridge so that it produces a constant voltage, a shampoo bottle, a plastic water pipe approximately 50 cm long, a plug for it and a lid from a plastic bucket.

A sleeve is made on a machine and fixed in the connector from the blades of the disassembled fan. The generator will be attached to this bushing. After securing, you need to start making the housing for the future windmill. Cut using a machine or manual mode bottom of a shampoo bottle. During cutting, it is also necessary to leave a hole at 10 in order to insert an axis machined from an aluminum rod into it. Attach it to the bottle with a bolt and nut. After soldering to the generator of all necessary wires, another hole is made in the body of the bottle to output these same wires. We stretch them out and secure the bottle on top of the generator. They must match in shape and the body of the bottle must reliably hide all its parts.

Shank for our device

In order for the windmill to capture wind flows from different directions in the future, it is necessary to assemble a tail using a pre-prepared tube. The tail section will be attached to the generator using a screw-on shampoo cap. They also make a hole in it and, having previously placed a plug on one end of the tube, pull it through and attach it to the main body of the bottle. On the other hand, the tube is sawed through with a hacksaw and the wing of the shank is cut out with scissors from the lid of the plastic bucket; it should have a round shape. All you need to do is simply trim the edges of the bucket that attach it to the main container.

We attach a USB output to the back panel of the stand and put all the resulting parts into one. You can attach the radio or recharge your phone through this built-in USB port. Of course, the strong power of the windmill from household fan does not have it, but one light bulb can still provide lighting.

Step-by-step assembly in video.

DIY wind generator from a stepper motor

Device from stepper motor even at low rotation speed it produces about 3 W. The voltage can rise above 12 V, and this allows you to charge a small battery. You can use a stepper motor from the printer as a generator. In generator mode, the stepper motor produces alternating current, and it can be easily converted to direct current using several diode bridges and capacitors. You can easily assemble the circuit with your own hands. The stabilizer is installed behind the bridges, resulting in a constant output voltage. To monitor visual tension, you can install an LED. In order to reduce the loss of 220V, Schottky diodes are used to rectify it.

The blades will be made of PVC pipe. The blank is drawn on the pipe and then cut out cutting disc. The propeller span should be about 50 cm, and the width of the blades should be 10 cm. You need to machine a sleeve with a flange to the size of the motor shaft. It fits onto the motor shaft and is secured with screws; plastic “screws” will be attached directly to the flanges. It is also necessary to carry out balancing - pieces of plastic are cut off from the ends of the blades, and the angle of inclination is changed by heating and bending. The generator itself is inserted into a piece of pipe, to which it is also bolted. As for the electrical board, it is better to place it at the bottom, and connect power from the generator to it. There are up to 6 wires coming out of the stepper motor, which correspond to two coils. They require slip rings to transfer electricity from the moving part. Having connected all the parts together, we proceed to testing the design, which will begin to rotate at 1 m/s.

Homemade for heating a small house or room

Windmill made from motor-wheel and magnets

Not everyone knows that a wind generator from a motor-wheel can be assembled with your own hands in a short time, the main thing is to stock up in advance necessary materials. The Savonius rotor is best suited for it; you can purchase it ready-made or do it yourself. It consists of two semi-cylindrical blades and an overlap, from which the axes of rotation of the rotor are obtained. You also need to make the blades, you can choose the material for them yourself using wood, fiberglass or PVC pipe, which is the simplest and the best option. We make a place for connecting the parts, where you need to make holes for fastening in accordance with the number of blades. A steel turning mechanism is also required so that the wind generator can subsequently withstand any weather.

A windmill made from a hoverboard motor-wheel with video instructions.

Made from ferrite magnets

A magnetic wind generator will be difficult for inexperienced craftsmen to master, but you can still try. So, the generator should have four poles, each containing two ferrite magnets. They will be covered with metal pads slightly less than a millimeter thick to distribute a more uniform magnetic flux. There should be 6 main coils, rewound with a thick wire and should be located through each magnet, occupying a space corresponding to the length of the magnetic field. The winding and magnet circuits can be mounted on a grinder hub, in the middle of which a pre-machined bolt is installed.

The flow of energy supply is regulated by the height of the stator mounting above the rotor; the higher it is, the less sticking, and accordingly the power decreases. For a windmill, you need to weld a support-stand, and attach 4 large blades to the stator disk, which you can cut from an old one metal barrel or lids from a plastic bucket. At average rotation speed it produces up to about 20 watts.

Generator for a windmill with cores of ferrite magnets.

Design of a wind generator using neodymium magnets

If you want to know how to create a wind generator, you need to make the base of a car hub with brake discs; this choice is quite justified, because it is powerful, reliable and well-balanced. After you have cleaned the hub of paint and dirt, you need to move on to placing the neodymium magnets directly. You need 20 of them on a disk, their size should be 25x8 millimeters.

Magnets must be placed taking into account the alternation of poles; before gluing, it is better to create a paper template or draw lines dividing the disk into sectors so as not to confuse the poles. It is very important that magnets facing each other have different poles, that is, they attract each other. The magnets are glued with super glue; it is necessary to raise the borders along the edges of the disks and wrap them in the center with tape or mold them with plasticine to prevent spreading. In order for a wind generator made on neodymium magnets to work with maximum efficiency, the stator coils should be calculated correctly. An increase in the number of poles leads to an increase in the frequency of the current in the coils, due to this, the generator, even at a low rotation frequency of the blades, produces more power. The coils are wound with thicker wires in order to reduce the resistance in them.

Wind generator with super magnets step by step instructions.

When the main part is ready, the blades are made as in the previous case and secured to the mast, which can be made from an ordinary plastic pipe with a diameter of 160 mm. After all, our generator, operating on the principle of magnetic levitation, with a diameter of one and a half meters and six blades, 8 m/s, is capable of providing up to 300 W.

The price of disappointment or an expensive weather vane

Today there are many options for making a device for converting wind energy, each method is effective in its own way. If you are familiar with the method of manufacturing energy-generating equipment, then it will not matter to you on what basis it is made, the main thing is that it meets the circuit you have planned and produces good power at the output.

Comparison of wind generators in video

ecoteplo.pro

Windmill from cooler | DIY master class

The cooler windmill is more of a toy than a real one. It produces 1.5 - 2 volts in a breeze of 4 km/h and at a current of 20 mA, which is quite enough to charge one battery. But you can do more than one, so there is still a prospect. . .

And so let's go!

Let's take a standard cooler from a computer:

We need to disassemble it and connect the wires directly to the coils and remove the Hall sensor, which looks like a transistor with 4 terminals, we don’t need it. In principle, you can do without this, because the cooler can already work as a generator, but if this is not done, there will be very little energy.

We connect by connecting all the coils in series for a single-phase generator, or in a triangle for a three-phase generator, whatever you like.

Next we will need rectifier diodes, any will do. I think that you can easily assemble a rectifier circuit from them. If not, then look at previous publications about a generator for a windmill, there is such a diagram.

We collect

We connect the LED to the output and blow on the cooler. The LED is on - everything is fine!

Then we need to cut off the blades and base from the cooler. We don't need them anymore.

Let's cut it off.

Making new blades. Take a thick-walled plastic bottle.

And cut out the blades from it. Here I think there is no need to explain anything - you will figure out what and how much. I got three blades.

And at the other end of the CD slot it will serve as a weather vane.

And this is the foundation in the ground for stability.

sdelaysam-svoimirukami.ru

instructions for converting a computer fan into a wind generator

already read: 553

When it comes to wind generators, the imagination pictures serious ones that can supply energy to entire cities. At the same time, it is quite possible to use this technology for applied, everyday purposes. This is useful for illustrating the issue, helping to evaluate the possibilities and prospects of wind energy using a simple and understandable example. The creation of small devices will not solve the problem of energy supply, but it can contribute to the development of technology and awaken interest in this method of generating electricity.

Mini wind generator from an old computer cooler

Fully functional and capable of performing useful work, a computer fan may fail. Almost any cooler will do, but it is best to choose the largest one, since the engine in its current form is not suitable for generating electric current. The reason for this need is that the motor windings are wound with double wire and in different directions, so it creates alternating current.

The most you can count on when making a wind generator from a computer cooler is powering several LEDs, which require constant current. Therefore, it will be necessary to make a rectifier, which will also take a little power. Therefore, the engine is unable to light even a single LED without modifications. For modernization, you will need to make more powerful windings capable of delivering higher voltage.

Expert opinion

Mining engineer, builder.

Important! You should not expect to create a device that can charge a cell phone battery or power a laptop. The energy obtained in this way is only enough to power the LED flashlight. The whole idea is useful from an educational or cognitive point of view.

DIY manufacturing technology

To convert a computer fan into a wind generator, you will need to perform the following steps:

upgrade the motor;
increase the size of the impeller;
make a stand with the ability to rotate around its axis (adjustment for the wind).

Let's look at these stages in more detail:

Upgrading the motor

In order to rebuild the engine, you will need to disassemble the cooler. This is done as follows:

remove the sticker from the engine compartment cover in the central part of the cooler;
carefully remove the compartment cover;
the retaining ring securing the impeller axis is removed;
the impeller is removed.

After this, free access to the motor windings appears. They must be removed as they are not suitable for our purpose. The easiest way is to carefully cut them and pull them out of their nests.

Then the windings are wound with thinner wire. The number of turns should be the maximum that the stator can accommodate. The windings are wound at random - the first clockwise, the second counterclockwise, then clockwise again and counterclockwise again. This will provide AC power.

Expert opinion

Energo.House expert Fomin O. A.

Mining engineer, builder.

It would be a good idea to change the magnets to more powerful ones, for example, neodymium. This will significantly increase the generator power and stabilize the output voltage.

After this, wires are soldered to the terminals of the windings, to which the rectifier will subsequently be connected.

After completing these steps, the entire structure is assembled in the reverse order. A rectifier is assembled from 4 diodes, and this completes the engine modernization.

Impeller manufacturing

The ones available on the cooler are good in size for cooling the insides of the computer, but they are too small to work as a wind wheel. In order to ensure the highest possible efficiency of interaction with wind flows, it is recommended to manufacture new blades. You will need to do the following:

carefully cut off the old blades;
make new ones from plastic bottles or other products;
glue new blades onto the impeller.

For making blades it is best to use plastic bottles or any cylindrical objects. This is necessary so that the blades have the desired profile, allowing the wind to rotate the impeller. Flat sheet plastic is not suitable for making blades.

The size of the new blades should be approximately 2-3 times larger than those that were before. Too large ones complicate the use of the device and do not have sufficient rigidity, and too small ones do not give the desired effect, the whole procedure becomes meaningless.

Expert opinion

Energo.House expert Fomin O. A.

Mining engineer, builder.

Attention! The shape should be such that the finished blades are at a slight angle to the vertical plane. All blades must be the same.

Stand

The stand is used to install the device in the desired position and orient it to the wind. The easiest way is to use a piece of tube into which a rod is inserted and moves freely in it. The tube is attached to the stationary part of the device, and the rod is installed on the base or attached to a support, for example, on a balcony.

In addition, you will need an automatic wind guidance device, in other words, a tail. It is like a tail or a weather vane and is rigidly attached to the windmill along the axis of rotation of the impeller.

The fully assembled device is installed in suitable place, a flashlight with LED bulbs is connected as a payload, and the windmill is started. The device can be used to illuminate any areas, as well as to acquire skills in making such products.

energo.house How to do floor hanger for clothes

Free electricity in mini volumes will help you quickly understand the power of free energy. You will need an old fan (aka cooler) from a computer and three neodymium magnets. This simple version of the BTG fuel-free generator is a miniature of large free electricity generators.

This is what a finished perpetual motion machine, also known as an electricity generator, looks like:

Here's what you'll need to build a perpetual generator:

Three neodymium magnets
Fan from the system unit
12 volt light bulb
Current loop diode

As well as a wooden platform (or any one of your choice), as well as a glue gun.

1. Cooler

2. Thin neodymium magnets:

3. 12 volt light bulb (35 W)

here is the marking

4. Diode

Let's start assembly.

Apply glue to the blade and glue it.

second magnet on the opposite side

glue it the same way

You don’t need to do this! — initially there was a desire to make 4 magnets, but they were larger and heavier, so the cooler engine did not work.

here is the error

and so on in the end - until two large ones peel off.

Step No. 2 (assembling the energy generator on the plateau)

glue a cooler to it

It’s better to glue it well, otherwise there will be vibration...

glue the lamp to the cooler

here's the end result:

Step No. 3 (solder the wires and diode)

first wire through diode

the second one directly to the light bulb

Let's start testing the generator!

Pre-peel off two magnets, so it will be easier for you.. you only need to glue two

We bring the magnet

movement begins

the revs increase, the lamp burns brighter

Having found the ideal point for the placement of the magnet, glue it.

Now you can start the perpetual motion machine with a push of your finger...

Free Energy to you!

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Write below on this page about your experience and what you think about it...

We take any case fan, the larger the diameter, the better. Many naively believe that its electric motor will immediately turn into a generator, as soon as it is turned. However, the maximum that it is capable of in this design is to light a weak LED. Is this really the limit? Why so little? To understand the reason, you need to look inside the device. The trick is that such coolers have a brushless motor. It is structurally not designed to work in reverse mode as a generator, and here's why: its windings are wound in series with double wire, and even opposite to each other, and the poles of the magnet alternate. Therefore, when the fan rotates, a back-emf will arise in the coils and such a generator will be ineffective.

The first method of reconstructing a cooler into a current generator

The first way out of this situation is to try to cure the original motor, that is, rewind the stator with a new wire. Of course, this procedure is very painstaking, but for those who know how to work with their hands, it is quite feasible.
And it’s even useful for educational purposes. The main thing now is to alternate the directions of winding the wire on each core. Thus, we get the simplest single-phase alternating current generator. The coils are connected to each other in series. The higher the number of turns and thinner the wire, the better. The beginning of the first coil and the end of the last will be the terminals of our generator, respectively. Now you can assemble everything and check it. But do not forget that the voltage will be variable. Therefore, you need to make a simple straightener or buy a ready-made one.
After this entire treatment procedure, the indicators certainly improved, but not radically. The reason for this may be either too large a gap between the stator and the rotor, or a weak ring magnet. It would be a stretch to call it a magnet. Plus, the rectifier still consumes from one to two volts. Unfortunately, such a rework did not justify itself.

The second option for converting a cooler into a windmill

Well, let's move on to plan “B”. Let's take a regular brush motor from a printer. It easily turns into a generator without any modifications. And thanks to the mechanical commutator, when rotating, it immediately produces direct current. And no rectifiers are needed. Its starting force is minimal, which is important for a small impeller. However, it should be noted that for effective operation it requires high speeds, and therefore wind speed. Let's see what we can survive from it by conducting a series of tests. We can conclude that in the wind at a speed of up to five meters per second there is nothing to catch at all, but in the range from five to ten meters per second it is quite possible to power a large LED flashlight and in practice use it for emergency lighting of small rooms, corridors, street paths or as a beacon. You can dispense with batteries in a small radio, and if you add a storage device in the form of an ionistor to the circuit, the problem with gusts of wind will be solved and the design will become more practical. If you live in a high-rise building, then it is ideal to place such a wind generator on the balcony and find a use for it. But you will have to forget about charging mobile phones with such a windmill. There just isn't enough power. Getting the voltage up is not a problem; the phone’s circuitry will work for that and will show the charging process, but the current will be no more than 50 mA with a wind of about ten meters per second. And this is meager power. For normal charging you need ten times more. Alas, this is only possible with hurricane winds. By the way, the big advantage of a small windmill is that it is not afraid of strong gusts of wind and therefore does not need protection, and the cheapness and simplicity of the design can awaken the imagination of a much larger number of home-made workers who are able to create miracles with their own hands.
The process of making a windmill from a computer cooler is shown in detail in the video.