How to make a wind generator with your own hands: device, principle of operation + best homemade products

Installation of a plant that will turn wind into energy

To install the assembled structure on a long mast (and it will be quite heavy), you need to do the following:

1. A reliable foundation is concreted in the ground.
2. During pouring, studs are poured into it to attach a powerful hinge (easy to do with your own hands).
3. After complete hardening, the hinge is put on the studs and secured with nuts.
4. The mast is attached to the movable half of the hinge.
5. In the upper part of the mast, with the help of a flange (welded), three to four extensions are attached. You will need a steel cable.
6. For one of the cables, the mast on the hinge rises (you can pull the car).
7. Stretch marks fix the strictly vertical position of the mast.

Wind turbine from a tractor generator

How to make a 220V do-it-yourself wind generator

To provide a private house with a constant flow of electricity at an average wind speed of 4 m / s, it is enough:

• 0.15-0.2 kW, which go to basic needs;
• 1-5 kW for electrical equipment;
• 20 kW for the whole house with heating.

homemade model

At the same time, it should be borne in mind that the wind does not always blow, therefore, with your own hands, a windmill for the house should be provided with a battery with a charge controller, as well as an inverter to which the devices are connected.

For any model of a homemade windmill, the main elements will be required:

• rotor - the part that rotates from the wind;
• blades, usually they are mounted from wood or light metal;
• a generator that will convert wind power into electricity;
• a tail that helps determine the direction of air flow (for a horizontal version);
• horizontal rail to hold the generator, tail and turbine;
• match;
• connecting wire and shield.

You can use this diagram to build

In the complete set of the shield there will be a battery, a controller and an inverter. Consider two options for how to build a wind generator with your own hands.

Related article:

What blade shape is optimal

One of the main elements of a wind turbine is a set of blades. There are a number of factors associated with these details that affect the efficiency of a windmill:

• the weight;
• the size;
• the form;
• material;
• amount.

If you decide to design blades for a homemade windmill, be sure to consider all these parameters. Some believe that the more wings on the generator propeller, the more wind power can be obtained. In other words, the more the better.

However, this is not the case. Each individual part moves against air resistance. Thus, a large number of blades on a propeller requires more wind force to complete one revolution. In addition, too many wide wings can cause the formation of the so-called "air cap" in front of the propeller, when the air flow does not pass through the windmill, but goes around it.

Form matters a lot. It depends on the speed of the screw. Poor flow causes vortices that slow down the wind wheel

The most efficient is a single-blade wind turbine. But building and balancing it with your own hands is very difficult. The design is unreliable, albeit with a high efficiency. According to the experience of many users and manufacturers of windmills, the most optimal model is a three-bladed one.

The weight of the blade depends on its size and the material from which it will be made. The size must be selected carefully, guided by the formulas for calculations. The edges are best processed so that there is a rounding on one side, and the opposite side is sharp

Properly selected blade shape for a wind turbine is the foundation of its good work. For home-made, the following options are suitable:

• sail type;
• wing type.

Sailing-type blades are simple wide strips, like on a windmill.This model is the most obvious and easy to manufacture. However, its efficiency is so low that this form is practically not used in modern wind turbines. The efficiency in this case is about 10-12%.

A much more efficient form is vane profile blades. The principles of aerodynamics are involved here, which lift huge planes into the air. A screw of this shape is easier to set in motion and rotates faster. The flow of air significantly reduces the resistance that the windmill encounters on its way.

The correct profile should resemble an airplane wing. On the one hand, the blade has a thickening, and on the other - a gentle descent. Air masses flow around a part of this shape very smoothly

The efficiency of this model reaches 30-35%. The good news is that you can build a winged blade with your own hands using a minimum of tools. All basic calculations and drawings can be easily adapted to your windmill and you can enjoy free and clean wind energy without restrictions.

Varieties of wind turbines

There are several types of wind generators. According to the number of blades, windmills are three-, two-, one-, multi-blade. Devices are produced without blades at all, where the “sail”, resembling a large plate, serves as the wind-catching part. Such equipment has a higher efficiency than other devices, but it is still not widely used. Interestingly, the fewer blades a windmill has, the more energy it produces.

Examples of flat wind turbines

According to the material used, the blades are rigid (made of metal or fiberglass) and cloth.The second type is the so-called sailing wind turbines, they are cheaper, but they lose to tough ones in practicality and efficiency.

Another important characteristic is the pitch feature of the propeller, which makes it possible to change the speed of rotation of the blades. Variable pitch devices allow you to maintain efficiency at different wind speeds. But at the same time, the cost of the system increases, and reliability decreases due to the complexity of the design. Therefore, in most cases, fixed-pitch devices are used, which are easy to maintain and reliable.

Types of wind turbines according to the location of the working axis

The working axis of rotation of the wind turbine can be located both vertically and horizontally

In both cases, there are advantages and disadvantages that you should pay attention to when choosing.

There are several types of vertical wind turbines:

1. Savonius wind generators, the design of which consists of several half-cylinders, which are fixed on an axis in a vertical position. The strength of such a device is the ability to work in any wind direction. But there is also a serious drawback - wind energy is used only by 25 - 30%.
2. In the Darrieus rotor, elastic bands are used as blades, fixed on beams without using a frame. The efficiency of the model is the same as that of the previous variety, but an additional installation is required to start the system.
3. Multi-bladed windmills are the most efficient among vertical devices.
4. The rarest option is devices with a helicoid rotor.Specially twisted blades ensure uniform rotation of the wind wheel, but the complexity of the design makes the price too high, which limits the use of mechanisms of this type.

Horizontal axis windmills are more common than vertical ones because they are more efficient but more expensive.

Types of wind turbines along the working axis

The disadvantages include the dependence of efficiency on the direction of the wind and the need to adjust the position of the structure using a weather vane. It is advisable to install a wind turbine of this type in an open area where it will not be covered by trees and buildings, and it is better away from the permanent place of residence of people. It is quite noisy and poses a danger to birds flying by.

Wind turbine manufacturers

The market includes both devices of foreign origin (mainly North America, Europe and China) and domestic installations. The price depends on the power and on the configuration - for example, the presence of solar batteries, and varies in the range from tens to hundreds of thousands of rubles.

Installation feasibility assessment

Before proceeding with the manufacture of a vertical-type wind generator, they study the weather situation in their region and try to determine whether the unit can provide the required amount of resource.

Experts recommend evaluating the following parameters:

• the number of windy days - take the average value for the year when the gust exceeds 3 m / s;
• the amount of electricity consumed per day by households;
• a suitable place on your own plot for wind equipment.

The first indicator is learned from the data obtained at the nearest weather station or found on the Internet on the relevant portals. Additionally, they check with printed geographical publications and make up a complete picture of the situation with the wind in their region.

Statistics are taken not for one year, but for 15-20 years, only then the average figures will be as correct as possible and will show whether the generator can fully satisfy the household's need for electricity or whether its power is only enough to supply individual household needs.

If the owner has a large plot of land located on a slope, near the river bank or in an open area, there will be no problems with installation.

When the house is located in the depths of the settlement, and the yard is compact in size and closely adjacent to neighboring buildings, it will not be easy to install a vertical model of a windmill with your own hands. The structure will have to be raised 3-5 m above the ground and additionally strengthened so that it does not fall with a strong gust.

It is necessary to take into account all this information at the planning stage, so that it becomes clear whether the wind generator will be able to take over the full energy supply or its role will remain within the framework of an auxiliary energy source. Preliminary it is desirable to carry out the calculation of the windmill.

Using an asynchronous motor to make a wind generator with your own hands

When using an induction motor as a generator, it will require a slight upgrade. In fact, an induction motor is much more suitable for making a generator than an electric motor that can only rotate in one direction.

Asynchronous motor ideal for wind turbine

In order to turn the electric motor into a generator, the help of a turner is needed. This should be taken care of in advance by agreeing with specialists. You should also prepare oblong magnets (6-8 pcs.). Better if they are neodymium. It is to their thickness that it will be necessary to grind off the rotor of the asynchronous motor, and then glue the magnetic strips along the axis. Magnets are glued with alternating polarity. Epoxy is perfect for this. After it has completely dried, you can assemble the electric motor, which has already become a generator, in the reverse order.

One of the options for installing magnets on the stator to convert the engine into a generator

Parts and Consumables

For the manufacture of a low-power (not higher than 1.5 kW) rotary wind generator, the following components will be required:

• 12 volt car alternator;
• 12-volt battery;
• converter from 12 V to 220 V, designed for power from 700 W to 1500 W;
• metal cylindrical container. You can use a regular bucket or a fairly large pot;
• a relay for charging batteries from a car and a light for charge control;
• pushbutton switch for 12 V;
• voltmeter;
• details for threaded connections;
• wires with a cross section of 2.5 and 4 squares;
• clamps for fastening the wind generator to the mast.

You will also need the following tools:

• shears for sheet metal processing (can be replaced with angle grinders);
• roulette;
• marker;
• screwdriver;
• different wrenches;
• drill with drills;
• pliers and side cutters.

DIY photo of wind turbines

We also recommend viewing:

• Do-it-yourself headlight polishing
• Do-it-yourself scaffolding
• DIY knife sharpener
• Antenna amplifier
• Battery Recovery
• Mini soldering iron
• How to make an electric guitar
• Braid on the steering wheel
• DIY flashlight
• How to sharpen a meat grinder knife
• DIY electric generator
• DIY solar battery
• Flowing mixer
• How to remove a broken bolt
• DIY charger
• Metal detector scheme
• Drilling machine
• Cutting plastic bottles
• Aquarium in the wall
• Pipe insert
• Do-it-yourself shelving in the garage
• Triac power controller
• Low pass filter
• Eternal flashlight
• file knife
• DIY sound amplifier
• Braided cable
• DIY sandblaster
• Smoke generator
• Acoustic switch
• DIY wax melter
• tourist ax
• Insoles heated
• solder paste
• Tool shelf
• Jack press
• Gold from radio components
• Do-it-yourself barbell
• How to install an outlet
• DIY night light
• Audio transmitter
• Soil moisture sensor
• Geiger counter
• Charcoal
• wifi antenna
• DIY electric bike
• Faucet repair
• induction heating
• Epoxy resin table
• Crack in the windshield
• Epoxy resin
• How to change a pressure tap
• Crystals at home

Help the project, share on social networks

The device and principle of operation of the gas generator

All autonomous power supplies work on the principle of converting one energy into another.

The design of the gas generator consists of three parts:

1. Gasoline internal combustion engine. Low-power units are equipped with a two-stroke engine, and powerful units are equipped with a four-stroke engine.
2. Current generator.
3. Block of electrical modulation.

All elements are mounted on a single support.In addition to the main parts, the gasoline generator is equipped with additional elements:

• fuel element.
• battery.
• Manual starter.
• Air filter.
• Silencer.

The main stages of the operation of a gas generator

1. Gasoline is poured into the generator tank.
2. In the engine, after burning carbon fuel, gas is formed. It rotates the crankshaft with the flywheel.
3. Rotating, the crankshaft transmits power to the generator shaft.
4. When rotation with a high frequency of the primary winding is reached, the magnetic fluxes are shifted - the charges are redistributed.
5. Potentials of the required magnitude are created at different poles. However, to obtain alternating current, from which industrial and household appliances can operate, an additional device is needed - an electrical modulation unit. You can use transformer or inverter.
6. Thanks to the inverter, you can bring the voltage to the required value - 220 V with a frequency of 50 Hz. In addition to the main purpose, with the help of an electrical modulation unit, impulsive overvoltage and interference are removed. The unit also monitors current leakage. The block protects the unit from short circuit and overload.

Homemade gasoline generator: pros and cons

Some experts argue that if a gasoline generator is assembled carefully and competently, then it will last as long as the factory counterpart. They provide the following arguments in their support:

• possible modernization - the device can be adjusted at any time to suit your own needs;
• savings - for example, for the purchase of a factory-assembled gas generator with a small capacity (0.75–1 kW), you will have to spend from 9 thousand to 12 thousand rubles;
• satisfaction from the completed project.

Proponents of factory assembly are skeptical about "handicraft" models and counter-arguments, arguing about the shortcomings of homemade products:

• The practical savings of assembling generators is negligible. Buying parts of a gasoline generator separately will cost quite a lot. To assemble the generator, it is better to use the parts of unnecessary devices.
• It is difficult to find an engine and generator that have optimal parameters.
• To manufacture a gasoline generator, you must have knowledge, special skills and be able to work with tools. The implementation of the project itself can take a long time.
• Factory-assembled gas generators are equipped with self-diagnosis - this unit monitors the operating parameters of the device. In addition, the generator includes an automatic start device - the unit starts working as soon as the electricity is lost in the network. Also, the gas generator can be equipped with other additional devices that are not available in "handicraft" models.
• Unlike factory homemade home-made gasoline generators, they usually have large dimensions and weight.

Classification of types of energy generators

There are several criteria by which wind turbines are classified.

So, windmills differ in:

• the number of blades in the propeller;
• materials for the manufacture of blades;
• the location of the axis of rotation relative to the surface of the earth;
• pitch sign of the screw.

There are models with one, two, three blades and multi-blade.

Products with a large number of blades begin to rotate even with a small wind. Usually they are used in such works, when the rotation process itself is more important than generating electricity.For example, to extract water from deep wells.

The blades can be sail or rigid. Sailing products are much cheaper than rigid ones, which are made of metal or fiberglass. But they have to be repaired very often: they are fragile.

With regard to the location of the axis of rotation relative to the earth's surface, there are vertical and horizontal models. And in this case, each variety has its own advantages: vertical ones are more sensitive to every breath of wind, but horizontal ones are more powerful.

Wind turbines are divided according to step features into models with a fixed and variable step.

The variable pitch allows you to significantly increase the rotation speed, but this installation is characterized by a complex and massive design. Fixed-pitch wind turbines are simpler and more reliable.

Image gallery
Photo from
From the badly damaged oscillator after disassembly, only the stator remained, for which the case was separately welded

In order to restore the technical characteristics of the engine, it is necessary to rewind 36 stator coils. In rewinding, a wire with a diameter of 0.56 mm is required. Turns must be made in 35 pieces

Before attaching the blades, the repaired engine must be assembled, varnished or at least epoxy coated, the surface must be painted

The wires are connected in parallel, three wires are brought out for connection to a power source

The axis, designed to ensure rotation, is made from a pipe outlet 15. Bearings are welded to the axis, which are attached through a pipe section 52

In the manufacture of the tail, galvanized sheet steel 4 mm thick was used, bent at the edges and installed in the groove selected in the rail

The blades are cut from a polymer sewer pipe, attached to the triangle connected to the engine with screws

A practically free wind generator can be made from junk parts: an engine from an old car and cutting a sewer pipe

Step 1: Dismantling the Used Generator

Step 2: Restoring Engine Capabilities

Step 3: Building a Rebuilt Windmill Motor

Step 4: Connecting the motor wires and leading them to the power line

Step 5: Specific features of the swivel device

Step 6: Making the Tail to Respond to the Wind

Step 7: Attaching the Mini Windmill Blades

Step 8: Build a Almost Free Power Generator

What is wind generation based on?

Wind generation is the ability to generate electricity from wind energy. A wind generator is, in fact, a solar generator: winds are formed due to the uneven heating of the Earth's surface by the sun, the rotation of the planet and its relief. Generators use the movement of air masses and convert it into electricity through mechanical energy.

Based on the principle of wind generation, both a whole power plant can be built, and autonomous devices can be built to provide electricity to certain areas and even houses. Today, 45% of all energy is generated by wind turbines. The largest wind farm is located in Germany, and each year produces up to 7 million kWh of energy per hour. Therefore, more and more often, the owners of country houses in remote regions and villages are thinking about using wind energy for domestic purposes. At the same time, windmills can be used as the sole or additional source of energy.

DIY photo of wind turbines

We also recommend viewing:

• Ideas on how to make a drilling machine
• Which chandelier is better to choose
• Directional Wi-Fi Antennas
• Tips for Choosing Sliding Doors
• How to choose an air conditioner for an apartment
• Dripping and flowing mixer
• DIY sound amplifier
• How to make roman blinds
• Ideas for homemade power generators
• The concept of eternal lanterns
• Scheme how to make a homemade metal detector
• small dressing room ideas
• Why plastic windows sweat
• Ideas on how to use the space under the stairs
• Charcoal production technologies
• Ideas for arranging pantries in the apartment
• Tips on how to choose high-quality plastic windows
• How to choose a hood for the kitchen
• Ideas for making a yarn craft
• What levels are better to choose
• How to choose a good router for your home
• Which screwdriver is better to choose
• Tips for choosing a good refrigerator
• How to make a beautiful crystal
• How to operate a pressurized faucet
• Effective ways to unscrew a broken bolt
• DIY homemade lanterns
• The best ideas for storing toys
• How to choose a good vacuum cleaner
• Tips for choosing the right bath
• Which heating is better to choose
• Which heating boiler to choose
• Which cuisine is better to choose
• How to choose quality tiles
• Which wallpaper is better to choose
• Gender Selection Tips
• Best Scaffolding Ideas
• What are the best humidifiers
• Which windows are better to choose
• How to choose an orthopedic pillow and mattress
• The best space zoning ideas
• Which mattress is better to choose
• Quick and step-by-step apartment cleaning
• What is an acoustic switch
• How to make a smoke generator
• Homemade jack press
• How to make a solar battery
• Which audio transmitter is better to buy
• Bottle cutters
• Induction systems for heating
• DIY electric bike ideas
• Homemade heated insoles
• Low and High Pass Filters
• How to make a wax melter
• Homemade Sandblasting Ideas
• How to make a knife sharpener
• Tips for choosing the right faucets
• Modern options for partitions
• Chalk boards in the interior
• Recommendations for choosing a laminate
• How to choose washing machines
• How to repair a cracked windshield
• Proper socket installation
• How to choose the right sofa
• How to choose gas boilers according to criteria
• Tips for choosing the right iron
• How to choose the right TV
• Varieties of guides for boxes
• How to choose curtains

Choosing a location for a wind turbine

Choosing the right place to install a wind turbine is an important step. It is best to place the device on an open, as high point as possible and carefully ensure that it does not fall below the level of adjacent residential and commercial buildings. Otherwise, the buildings will become an obstacle to the air flow and the efficiency of the unit will be greatly reduced.

If the site goes to a river or lake, the windmill is placed on the shore, where the winds blow especially often. Ideally suited for the location of the generator are hills available on the territory, or large empty spaces where there are no artificial or natural airflow obstructions.

When residential real estate (house, cottage, apartment, etc.) is located within the city or is located outside the city, but in densely built-up areas, the wind energy complex is placed on the roof.

To place a generator on the roof of an apartment building, they take the written consent of the neighbors and obtain official permission from the relevant authorities.

When installing a vertical generator on the roof of an apartment building, it should be remembered that the unit is quite noisy and can cause inconvenience to both the owners and the rest of the residents. Therefore, it is necessary to place the device closer to the center of the roof, so that the owners of apartments on the upper floors do not suffer from the loud hum emitted by the windmill during operation.

In a private house with a large garden plot, choosing a suitable place is much easier. The main thing to consider is that the structure is at a distance of 15-25 meters from the living quarters. Then the sound effects from the rotating blades will not disturb anyone.

Generator and law: is it necessary to formalize a windmill

The answer to this question will depend on various nuances. As such, official permission to install a wind turbine is not required, but envy or the usual harmfulness of neighbors can become a problem. They may complain about excessive noise from the blades and the generator itself, or that the engine interferes with radio waves. Also, environmental services can get into a pose if, for example, a windmill interferes with the migration of migratory birds.

Wind turbines are environmentally friendly, productive and use a renewable energy source

Another nuance regarding the height of the wind turbine mast. If there is an airport or flight school nearby, then the installation of structures higher than 15 m will be prohibited. Otherwise, there are no barriers to installing a windmill on your site.

A windmill in the courtyard of a private house no longer seems exotic - everyone saves as best they can

Summarizing the above

Wind turbines, if done right, can help save on electricity consumption. And if they are connected to the power grid of a private house through high-capacity batteries, it is quite possible that the owner will completely forget about paying bills for electricity. In addition, here it will already be possible not to be afraid of power surges that can disable household appliances and electronics. But every day there are more and more such high-tech gadgets in homes. So, you should not feel sorry for the free time that you want to spend on the couch in front of the plasma panel. It is better to spend it just to protect this panel. Otherwise, it may happen that on the next weekend you will have to take it for repair or even purchase a new one. Think about whether you need to lose money instead of saving it.

Watch this video on YouTube