In a private house      03/05/2020

We make a generator from an asynchronous electric motor on our own at home. How to make a wind generator with your own hands: useful tips Do-it-yourself 12-volt generator from an electric motor

Making a windmill yourself seems like an impossible task that takes a lot of time and effort. But following step by step instructions you can easily and quickly achieve the desired result for little money.

Having set the goal of acquiring a wind generator, many want to make it themselves. As research on the Internet has shown, the majority do this, but this decision took them a lot of time and effort (at least the very first assembly). The most commonly used assembly scheme is magnetic direct current. This path is much simpler than creating the generator itself. For this reason, it is recommended to be patient and start looking for an engine that would be perfect for making a wind generator with your own hands.

Generator selection

As it turns out, most people use an old computer motor as a generator. Such a motor is a rarity and was used back in the days when computers used large tape-reel drives. Among all possible options The best can be considered a 30 volt DC motor from the manufacturer Ametek. This is the most suitable option for making a wind generator, since even a slight rotation of its shaft can freely generate 12 V. This motor is quite difficult to find, but the ebay and Amazon trading platforms are full of its analogues. Additional in the description knowledgeable people indicate the possibility of their use as a generator for a windmill.

The selection of an engine must be made taking into account the following parameters:

  • D.C;
  • low speed;
  • high voltage;
  • high current.

The thing is that an engine designed for 7200 rpm and a voltage of 24 V is unlikely to be able to produce the required values ​​at low speeds. But if you take a 30-volt motor with a nominal value of 325 rpm, then it is quite realistic to expect a voltage of 12 volts from it even at the low speeds characteristic of a windmill.

The approximate cost of the same Ametek is approximately $26. You can find a slightly cheaper engine, but this is not so important. At normal lung when pushed, it lights a 12-volt lamp without any problems, which is what we needed. So, we found the engine-generator. Let's move on to the next step - calculating the blades.

Blades

As a quality, you can use a regular one without any problems. plumbing pipe made of PVC 60 cm long and 15 cm in diameter. Cut it into 4 parts. These will be blade blanks. Then cut a 5x5 square at the base to create the fastener later. To maintain the exact shape and not cut off excess, it is recommended to initially drill a small hole in the right place. Next, simply cut off the excess plastic along the workpiece diagonally. That's it, the first blade is ready.

Use the cut out piece as a template to create the remaining three blades. It will also act as a spare part if something goes wrong. We selected the engine for our wind generator and made the blades. Now we need to make them one.

Assembling a generator with blades

To combine the blades with the generator, you can use a regular pulley as a base and an aluminum disk with a diameter of 13 cm. By fastening them together using a bolted connection, you will get an excellent lightweight and practical base, which will be an intermediate link that transmits the wind force from the blades, rotating the wind generator. The blades themselves are also attached using bolts. You can purchase a cap at a plumbing store to hide all the metal parts and make the windmill more streamlined. Practice has shown that all these parameters allow even a light breeze to create rotations, and at the same time the wind generator produces the 12 V it is supposed to.

Turbine installation

To install the turbine yourself, you can use a regular wooden stand from a block 84 cm long. It is also advisable to use a piece plastic pipe 10 cm in diameter to protect the engine from various kinds precipitation. It is recommended to use it as a tail for a 12 volt windmill. aluminum plate size 21x35 cm and thickness 20-30 mm. It is ideal as a counterweight and as an element for turning the installation in the wind. All dimensions are not critical and can be slightly changed to suit the design features.

It is also recommended to sand all elements and round corners for a more attractive look and better aerodynamic performance. Then cover all the wooden parts with several coats of paint. You can choose any color, since nothing depends on it.

For greater convenience, on the edge where the generator itself will be located, you can screw several strips so that it sits tightly in its place. The motor is secured with clamps. The wind generator is ready. Now you need to install it on the mast.

Mast elements

The final result when creating a windmill with your own hands depends entirely on the ability to turn depending on the direction of the wind and the main height.

Regular iron pipe with a diameter of 2.5 centimeters, it easily slides inside an electrical pipeline with a cross-section of 3 centimeters. Install an iron flange on the block with seat 2.5 cm under the pipe. Its center should be approximately 19 cm from the edge. Next, simply screw the piece of pipe into the flange. You also need to drill a hole in the block for the wires that will pass through it.

The base can be made in the following sequence:

  1. A circle with a diameter of 60 cm is cut out of plywood;
  2. Two metal plumbing elbows with a diameter of 2.5 cm are attached to it using flanges;
  3. A tee with a diameter of 3.5 cm is installed in the middle, onto which the main pipe is screwed;
  4. Several holes need to be drilled in the wooden disk to secure it to the ground.

The pipe that will serve as a mast can be used either collapsible or solid. Its length must be at least 3 meters and its diameter 3.5 cm. To secure the pipe, you can use ordinary ropes with clamps.

We have created a mast and can now safely install our 12-volt wind generator in its working position. In this case, do not forget about connecting the wires to it and pulling them through the pipe. You need to make a hole at the base to take them out and connect them to the controller, which we will now look at.

Controller circuit

The controller allows you to regulate the charge in the batteries without giving them excess energy. If the battery is full, then this device redirects the current directly to the consumer. A 12 volt controller can be easily found at any electronics store. But you can do it yourself, which will have a positive effect on the price.

The figure shows a diagram of the controller assembly. It has been slightly modified due to the fact that a large number of standard parts very hard to find. Any radio amateur can put it together.

Having installed the windmill and connected the controller, we see that our design works and even the multimeter shows an almost exact value of 12 volts in low winds. The wind generator was assembled by hand.

Expenses

Probably the most important part is the cost. After conducting a little market research, we can come to the conclusion that for the purchase of all elements, including the inverter and batteries, our windmill, assembled with your own hands, will cost no more than $250. Factory wind generators have almost the same characteristics as the one you assemble yourself. You just have to pay more than $1000 for them.



I will show you how to assemble a simple, but quite powerful, 220 volt generator.

Required:

- commutator motor, you can have another one for 12 volts
- attachment to the motor axis - drill chuck
- UPS or inverter from 12 to 220
- 10 ampere diode: D214, D242, D215, D232, KD203, etc.
- wires
- bike
- and preferably a 12 volt battery

Assembly:

- secure the bike so that the rear wheel rotates freely, hang it up
- screw the cartridge onto the motor axis
- fasten the motor so that the cartridge is pressed tightly against the wheel, you can tighten it with a spring
- connect the motor to the battery: the negative wire of the motor to the negative of the battery, the positive wire of the motor to the anode of the diode, the cathode of the diode to the positive of the battery
- connect the battery to an uninterruptible power supply or an inverter
All! You can connect 220 volt consumers to the uninterruptible power supply and use electricity! As soon as the battery is discharged, all you have to do is pedal and the battery will be charged in about an hour.

Where can I get the parts?

- the motor can be bought at a car store: cooling fan motor. It's not expensive. And if you want it for almost nothing, then you can twist it at a metal collection point from an old car.
- uninterruptible power supply from a personal PC, maybe an old one with a bad internal battery. Or an inverter 12 - 220, sold in car stores.
- 10 ampere diode, for example: D305, D214, D242, D243, D245, D215, D232,
D246, D203, D233, KD210, KD203, etc. Sold in radio parts stores. Or you can unscrew it from old equipment.

My experience:

I used this generator for several months and it showed pretty good results! The battery charging current was approximately 10 amperes and depended on how you pedaled. If you turn it slowly, you get 5 amperes, if you turn it as quickly as possible, you get 20 amperes. The average generator power is 120 watts. Mainly used low power consumers:

3 W - phone charging
- 5 W - radio receiver
- 7 W - charging and using the tablet
- 10 W - charging camera, flashlight and video camera
- 12 W - energy saving light bulb
- 30 W - music center
- 40 W - laptop
- 70 W - TV (rarely turned on)

I had enough charge for almost a day, after which I pedaled for an hour and I could use electricity again.

If anyone knows other methods for generating electricity at home, please share in the comments.

Wind energy resources in the Russian segment occupy an ambiguous position. The use of such devices is considered from two sides. On one hand, a homemade windmill is perfect solution to save energy mechanically. This is facilitated by the endless plains, where there is a constant wind speed and sufficient potential energy is accumulated, which is later converted into kinetic energy with the help of a windmill. However, in some regions of the vast country, winds have weak potential due to uneven and slow impacts. In the northern regions there is a third side, where violent and unpredictable winds run rampant. Each home owner can maintain his own windmill on the farm. Buying such a device is expensive, so it’s better to create a wind generator with your own hands. Let’s decide: which specific type of windmill is more suitable and for what purposes is it chosen?

You can make a wind generator with your own hands from empty bottles

Regardless of whether you choose a vertical wind generator, a rotary wind turbine or another type, the schematic design of the product has the following similar components:

  • Current generator (available option is used).
  • Blades (made of hard material that is incapable of corrosion and deformation during operation)
  • A tower lift is necessary to raise the installation to the desired level.
  • Additional batteries with an electronic control system are optionally installed.

It is easier and cheaper to assemble wind generators with your own hands with a rotor or an axial design with magnets. To choose the right one, let's study the device of each.

Windmill 1 - rotor type design

A homemade wind generator with a rotary turbine is made of two, less often four, blades. It has a simple design, which is why it can be made independently from scrap materials. Such a wind generator for a home will not provide the required amount of electricity to a two-story country cottage. The power of the wind generator is enough to supply electricity to a small one. A wind turbine for a private home is used to supply lighting to outbuildings adjacent to the household, house lights, lamps, a breeze heater, a hairdryer, a refrigerator and others.

Preparation of parts and consumables

Depending on what power is calculated wind generator with your own hands, select the appropriate generator for the windmill. We will look at do-it-yourself windmills with a power of up to 5 kW. It’s easy to make a wind generator with your own hands with a rotor. To do this, we will prepare the following materials:

  1. Automotive 12 volt. To create the device, an acid or gel battery from a car is used.
  2. Voltage regulator for converting alternating currents: 12 –> 220 volts.
    Homemade voltage regulator for converting alternating currents: 12 –> 220 volts
  3. Overall capacity. Suitable options: stainless steel pan or aluminum bucket.
  4. Charger. We use a relay removed from the car.
  5. 12 volt switch.
  6. Charge lamp with controller.
  7. Bolts M16×70 mm with nuts and washers.
  8. A simple voltmeter of any configuration from an unused measuring device.
  9. Three-core electric cable with a cross-section of at least 2.5 mm 2.
  10. with rubberized lining. Will be needed when attaching the generator to the load-bearing matcha.

To make electric generators for 220 with your own hands, you will need a standard set of installation tools: an angle grinder with discs, a marker, a screwdriver, a drill with drills, metal scissors, a set of spanners, gas keys No. 1,2,3, wire cutters, and a tape measure.

Progress of design work

To create a windmill design, the rotor is initially prepared. The next step is to modify the generator pulley. A metal container is used as a rotor: a pan or bucket. Using a tape measure and a marker, measure out four equal parts. Then we make holes at the ends of the drawn lines to make dividing into component parts easier. Cut the container with metal scissors. If there are none, we perform the same actions with a grinder. From the resulting parts we cut out the blades of the future rotor, but not completely cutting through the workpiece.

Cutting containers or products with thin tin walls is not allowed, as the material overheats and becomes deformed.

The rotor blades must match each other in size

In order for a windmill from a car generator to work correctly, the rotor blades must match each other in size. As an option, you can create a generator from a starter yourself. Therefore, measurements require careful checks.

Now we prepare the generator for the windmill with our own hands. First of all, we determine the direction of rotation of the pulley. To do this, use back-and-forth movements of the hand to twist it left and right. According to the standard, it rotates clockwise, but there are exceptions to the rules. At the next stage, we connect the rotor part to the generator. Using a drill we do straight holes in the bottom of the tank and the generator pulley.

The holes should be symmetrically located. Otherwise there is a risk of imbalance in the rotor movement.

We bend the edges of the blades slightly to increase the speed of rotation from the wind. The greater the bending angle, the more efficiently the rotor unit perceives air flows. Rotor blades are made not only from a container. You can make blades for a wind generator with your own hands in the form of separate parts that are connected to a metal blank in the shape of a circle. In such models it is easier to carry out renovation work for the restoration of individual impellers.

To connect the generator, we take a container with manufactured blades and securely attach it to the generator pulley with boots M16x70 mm or smaller in diameter. Now assembled structure completely installed on the mast. We fix it in accessible places with metal clamps. We mount electrical wiring and assemble a closed circuit. Each contact is connected to the corresponding connector. If necessary, pre-record the markings and color of each wire separately. We attach the wiring to the mast with wire.

After complete assembly of the mechanical structure, all that remains is to connect the inverter (voltage converter), battery and load (instrumentation and lighting). To connect the battery and inverter we use an electrical cable with a cross-section of 3 mm 2 and a length of 1 meter, and for other peripheral loads a cable with a cross-section of 2 mm 2 is suitable. The assembled windmill with your own hands is ready for use.

Do-it-yourself low-power wind generator based on a drill

Advantages and disadvantages of this model

At correct assembly all components, do-it-yourself wind generators from a car generator will serve long term without a single problem. The design, powered by a 75-amp battery with a 1000 W converter installed, will provide the amount of electricity for stable operation street lighting or video surveillance devices. The advantages also include: a relatively low price for components for a wind turbine, maintainability, the absence of additional conditions for correct operation and low noise design. For example, low noise vertical wind generators 5 kW are quieter than modern refrigerators.

The disadvantages are obvious: weak electrical performance, low strength, dependence on sudden changes in wind speed, which leads to frequent breakdown blades.

Windmill 2 - axial design with magnets

Do-it-yourself 220V wind generators with neodymium magnets are called axial windmills. The design of such structures is based on non-iron stators with attached magnets. Due to the fact that the cost of the latter has dropped several times, it has become easier to make a magnet generator with your own hands. The model of this windmill will allow you to get more electrical energy, rather than self-created rotary electric generators.

What needs to be prepared?

What is a wind generator, device and principle of operation

The main element of the mechanical design of the axial generator is the wheel hub passenger car along with brake discs, which will become the future rotor. If the part was previously used for its intended purpose, then it should be prepared. To do this, we disassemble the hub into its component parts and wire brush We clean the internal and external walls of the element from rust. We carefully lubricate each bearing. Now we assemble the hub in reverse order.

Distributing and securing magnets

To attach neodymium magnets to the rotor brake discs, we prepare 20 rectangular units with dimensions of 25 × 8 mm.

In magnets with a round structure, the magnetic field is located in the center, and in rectangular ones along the length.

An even number of magnets form poles. We arrange them, alternating one at a time across the entire disk area. In order to find out where the magnet's plus and minus are, we take one of them, and we lean the rest against it, first with one side and then with the other. If they are magnetized, then use a marker to put a plus on this side and vice versa. When increasing the number of poles, we are guided by the following rules:

  1. For single-phase generators, the sum of the poles equals the number of magnets.
  2. For three-phase, the ratio of proportions is 4/3 in units of magnets and poles, as well as 2/3 in terms of poles to coils, respectively.
Magnets are installed perpendicular to the disc circumference

To accurately distribute the magnets around the circumference of the brake disc, we use a template drawn on a piece of paper. We glue the magnets with strong glue and then fix them with epoxy resin.

Three-phase and single-phase generators

A single-phase stator is comparatively worse than its three-phase counterparts. Due to the variability in current output, high amplitude fluctuations occur in the electrical network, which is why single-phase devices produce vibration. In three-phase generators, the current load is compensated from one phase to another. Thanks to this, the power in such a network is always constant. Vibration influences negatively affect the structure as a whole, therefore, the service life of single-phase generators is much shorter than that of three-phase ones. Another advantage of the three-phase model is the absence of noise during operation.

Coil winding process

Before we start winding the wire onto the generator coils, we make sure that the moment the battery starts charging at 12 volts should occur at a nominal value of 110 rpm. Using these data, we calculate required amount turns in a single coil: 12*110/N, where N is the number of coils. For winding we use exclusively wires with a large cross-section. This will decrease the resistance units and increase the current.

Mast and propeller

The height of the mast should be about 6-12 meters. Formwork is poured under the base of the mast and then concreted. We attach a screw to the top part, which can be made from PVC pipes with a diameter of 160 mm and a length of at least 2 meters. We cut out six two-meter plates from it. We fix the resulting feint at the top of the mast. We strengthen the mast itself with the help of cables nailed on one side and on the other to the body of the structure.

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Features of wind turbine operation

Any of the two presented models of wind turbines is suitable for use as alternative source electricity. In the manufacture of such a device, any 220V generator can be used. For example, a do-it-yourself wind generator made from wood has a long service life. A wind generator made from a screwdriver is one of the most simple options windmill Owners country houses will appreciate such an invention. Each type of wind generator has a set of individual advantages and disadvantages. The degree of effectiveness of a particular design may vary for different regions of our country. Such a source of electricity will not hurt, especially if such equipment is used on flat terrain with high wind intensity.

Local power grids are not always able to fully provide electricity to homes, especially when it comes to country dachas and mansions. Interruptions in the constant power supply or its complete absence forces us to look for electricity. One of these is to use - a device capable of converting and storing electricity, using for this the most unusual resources (energy, tides). Its operating principle is quite simple, which makes it possible to make an electric generator with your own hands. Maybe, homemade model will not be able to compete with its factory-assembled counterpart, but this is a great way to save more than 10,000 rubles. If we consider a homemade electric generator as a temporary alternative source of power supply, then it is quite possible to get by with a homemade one.

How to make an electric generator, what is required for this, as well as what nuances will have to be taken into account, we will find out further.

The desire to have an electric generator for your use is overshadowed by one nuisance - this is high cost of the unit. Whatever one may say, the lowest-power models have a fairly exorbitant cost - from 15,000 rubles and above. It is this fact that suggests the idea of ​​creating a generator with your own hands. However, he himself the process can be difficult, If:

  • no skill in working with tools and diagrams;
  • there is no experience in creating such devices;
  • out of stock necessary details and spare parts.

If all this and a great desire are present, then you can try to build a generator, guided by the assembly instructions and the attached diagram.

It is no secret that a purchased electric generator will have a more expanded list of capabilities and functions, while a homemade one can fail and fail at the most inopportune moments. Therefore, whether to buy or do it yourself is a purely individual question that requires a responsible approach.

How does an electric generator work?

The operating principle of an electric generator is based on the physical phenomenon of electromagnetic induction. A conductor passing through an artificially created electromagnetic field creates a pulse, which is converted into direct current.

The generator has an engine that is capable of generating electricity by burning a certain type of fuel in its compartments:, or. In turn, the fuel, entering the combustion chamber, produces gas during the combustion process, which rotates the crankshaft. The latter transmits an impulse to the driven shaft, which is already capable of providing a certain amount of output energy.

I found an article on the Internet about how to convert a car generator to a generator with permanent magnets. Is it possible to use this principle and convert a generator with your own hands from an asynchronous electric motor? It is possible that there will be large energy losses due to the wrong arrangement of the coils.

I have an asynchronous type motor with a voltage of 110 volts, speed – 1450, 2.2 amperes, single-phase. I don’t dare to do it with containers homemade generator because there will be big losses.

It is proposed to use simple engines according to this scheme.

If you change an engine or generator with round-shaped magnets from the speakers, do you need to install them in crabs? The crabs are two metal pieces anchored outside the field coils.

If magnets are placed on a shaft, the shaft will shunt the magnetic lines of force. How will there be excitement then? The coil is also located on a metal shaft.

If you change the connection of the windings and make a parallel connection, accelerate to speeds above normal values, you get 70 volts. Where can I get a mechanism for such speeds? If you rewind it to lower speeds and lower power, the power will drop too much.

An asynchronous motor with a closed rotor is made of iron, which is filled with aluminum. You can take a homemade generator from a car, which has a voltage of 14 volts and a current of 80 amperes. This is good data. Engine with manifold on alternating current from a vacuum cleaner or washing machine can be used for a generator. Install magnetization on the stator and remove DC voltage from the brushes. According to the highest EMF, change the angle of the brushes. Coefficient useful action tends to zero. But nothing better than a synchronous generator has been invented.

I decided to test a homemade generator. A single-phase asynchronous motor from a small washing machine was turned with a drill. I connected a 4 µF capacitance to it, it turned out 5 volts 30 hertz and a current of 1.5 milliamps for a short circuit.

Not every electric motor can be used as a generator using this method. There are motors with a steel rotor that have a low degree of magnetization on the remainder.

It is necessary to know the difference between electrical energy conversion and energy generation. There are several ways to convert 1 phase into 3. One of them is mechanical energy. If the power station is disconnected from the outlet, then all conversion is lost.

It is clear where the movement of the wire with increasing speed will come from. It is not clear where the magnetic field will come from to produce the EMF in the wire.

It's easy to explain. Due to the magnetism mechanism that remains, an emf is generated in the armature. A current arises in the stator winding, which is shorted to the capacitance.

The current has arisen, which means it gives an increase in the electromotive force on the coils of the rotor shaft. The resulting current increases the electromotive force. The stator electric current produces a much greater electromotive force. This goes until the stator magnetic fluxes and the rotor are in equilibrium, as well as additional losses.

The size of the capacitors is calculated so that the voltage at the terminals reaches the nominal value. If it is small, then reduce the capacity, then increase it. There were doubts about old motors, which supposedly do not excite. After accelerating the rotor of a motor or generator, you need to quickly poke a small amount of volts into any phase. Everything will return to normal. Charge the capacitor to a voltage equal to half the capacity. Turn on using a three-pole switch. This applies to a 3-phase motor. This circuit is used for generators of passenger transport cars, since they have a squirrel-cage rotor.

Method 2

You can make a homemade generator in another way. The stator has a clever design (it has a special design solution), and it is possible to adjust the output voltage. I made this type of generator with my own hands at a construction site. The engine produced 7 kW at 900 rpm. I connected the excitation winding according to a 220 V delta circuit. I started it at 1600 rpm, the capacitors were 3 to 120 uF. They were switched on by a contactor with three poles. The generator acted as a three-phase rectifier. Powered from this rectifier electric drill with a 1000 watt collector, and a 2200 watt circular saw, 220 V, a 2000 watt grinder.

I had to make a soft start system, another resistor with a shorted phase after 3 seconds.

This is not correct for motors with commutators. If you double the rotating frequency, the capacitance will also decrease.

The frequency will also increase. The tank circuit was switched off automatically so as not to use the reactivity torus and not waste fuel.

During operation, you must press the contactor stator. Three phases dismantled them as unnecessary. The reason lies in the high gap and increased field dissipation of the poles.

Special mechanisms with a double cage for the squirrel and slanted eyes for the squirrel. Still, I got 100 volts and a frequency of 30 hertz from the washing machine motor, the 15 watt lamp does not want to light up. Very weak power. It is necessary to take a stronger motor, or install more capacitors.

A generator with a squirrel-cage rotor is used under the cars. Its mechanism comes from a gearbox and a belt drive. Rotation speed 300 rpm. It is located as an additional load generator.

Method 3

You can design a homemade generator, a gasoline-powered power plant.

Instead of a generator, use a 3-phase asynchronous motor of 1.5 kW at 900 rpm. The electric motor is Italian and can be connected with a triangle or a star. First, I placed the motor on a base with a DC motor and attached it to the coupling. I started turning the engine at 1100 rpm. A voltage of 250 volts appeared on the phases. I connected a 1000 watt light bulb, the voltage immediately dropped to 150 volts. This is probably due to phase imbalance. Each phase must have a separate load. Three 300-watt light bulbs will not be able to reduce the voltage to 200 volts, theoretically. You can put a larger capacitor.

The engine speed must be increased and not reduced when under load, then the power supply to the network will be constant.

Significant power is required; an autogenerator will not provide such power. If you rewind a large KAMAZ, then 220 V will not come out of it, since the magnetic circuit will be oversaturated. It was designed for 24 volts.

Today I was going to try connecting the load through a 3-phase power supply (rectifier). They turned off the lights in the garages, but it didn’t work. In the city of power engineers, the lights are systematically turned off, so it is necessary to create a source of constant power supply with electricity. There is an attachment for electric welding that is attached to the tractor. To connect an electric tool, you need a constant voltage source of 220 V. There was an idea to construct a homemade generator with your own hands, and an inverter for it, but, on batteries You can't work for long.

The electricity was recently turned on. I connected an asynchronous motor from Italy. I placed it with the chainsaw motor on the frame, twisted the shafts together, and installed a rubber coupling. I connected the coils according to a star circuit, the capacitors in a triangle, 15 μF each. When I started the motors, there was no power output. I connected a capacitor charged to the phases, and voltage appeared. The engine produced its power of 1.5 kW. At the same time, the supply voltage dropped to 240 volts; at idle it was 255 volts. The grinder operated normally at 950 watts.

I tried to increase the engine speed, but there was no excitement. After the capacitor contacts the phase, voltage appears immediately. I will try to install a different engine.

What system designs are produced abroad for power plants? On 1-phase ones, it is clear that the rotor owns the winding, there is no phase imbalance, because there is one phase. In 3-phase there is a system that allows power adjustment when motors with the highest load are connected to it. You can also connect an inverter for welding.

Over the weekend I wanted to make a homemade generator with my own hands with a connection asynchronous motor. A successful attempt to make a homemade generator turned out to be connecting an old engine with a cast iron housing of 1 kW and 950 rpm. The motor is excited normally, with one 40 µF capacitance. And I installed three containers and connected them with a star. This was enough to start an electric drill and grinder. I wanted it to produce voltage output on one phase. To do this, I connected three diodes, a half-bridge. The fluorescent lamps for lighting burned out, and the bags in the garage were set on fire. I will wind the transformer into three phases.

Write comments, additions to the article, maybe I missed something. Take a look at, I will be glad if you find something else useful on mine.