A power source is needed to power household appliances and industrial equipment. There are several ways to generate electricity. But the most promising and cost-effective, today, is the generation of current by electric machines. The easiest to manufacture, cheap and reliable in operation turned out to be an asynchronous generator that generates the lion's share of the electricity we consume.

The use of electric machines of this type is dictated by their advantages. Asynchronous power generators, unlike, provide:

• a higher degree of reliability;
• long service life;
• profitability;
• minimum maintenance costs.

These and other properties of asynchronous generators are inherent in their design.

Device and principle of operation

The main working parts of an asynchronous generator are the rotor (moving part) and the stator (stationary). In Figure 1, the rotor is on the right and the stator is on the left. Pay attention to the rotor device. It does not show windings of copper wire. In fact, windings exist, but they consist of aluminum rods short-circuited into rings located on both sides. In the photo, the rods are visible in the form of oblique lines.

The design of short-circuited windings forms the so-called "squirrel cage". The space inside this cage is filled with steel plates. To be precise, aluminum rods are pressed into grooves made in the rotor core.

Rice. 1. Rotor and stator of an asynchronous generator

The asynchronous machine, the device of which is described above, is called a squirrel-cage generator. Anyone who is familiar with the design of an asynchronous electric motor must have noticed the similarity in the structure of these two machines. In fact, they are no different, since the induction generator and the squirrel-cage motor are almost identical, with the exception of additional excitation capacitors used in generator mode.

The rotor is located on a shaft, which sits on bearings clamped on both sides by covers. The whole structure is protected by a metal case. Generators of medium and high power require cooling, so a fan is additionally installed on the shaft, and the case itself is made ribbed (see Fig. 2).

Rice. 2. Asynchronous generator assembly

Operating principle

By definition, a generator is a device that converts mechanical energy into electrical current. It does not matter what energy is used to rotate the rotor: wind, potential energy of water or internal energy converted by a turbine or internal combustion engine into mechanical energy.

As a result of the rotation of the rotor, the magnetic lines of force formed by the residual magnetization of the steel plates cross the stator windings. EMF is formed in the coils, which, when active loads are connected, leads to the formation of current in their circuits.

At the same time, it is important that the synchronous speed of rotation of the shaft slightly (by about 2 - 10%) exceeds the synchronous frequency of the alternating current (set by the number of stator poles). In other words, it is necessary to ensure the asynchrony (mismatch) of the rotational speed by the amount of rotor slip.

It should be noted that the current thus obtained will be small. To increase the output power, it is necessary to increase the magnetic induction. They achieve an increase in the efficiency of the device by connecting capacitors to the terminals of the stator coils.

Figure 3 shows a diagram of a welding asynchronous alternator with capacitor excitation (left side of the diagram). Please note that the excitation capacitors are connected in delta. The right side of the figure is the actual circuit of the inverter itself. welding machine.

Rice. 3. Scheme of welding asynchronous generator

There are other, more complex excitation schemes, for example, using inductors and a capacitor bank. An example of such a circuit is shown in Figure 4.

Figure 4. Diagram of a device with inductors

Difference from synchronous generator

The main difference between a synchronous alternator and an asynchronous generator is in the design of the rotor. In a synchronous machine, the rotor consists of wire windings. To create magnetic induction, an autonomous power source is used (often an additional low-power generator direct current located on the same axis as the rotor).

The advantage of a synchronous generator is that it generates a higher quality current and is easily synchronized with other alternators of this type. However, synchronous alternators are more sensitive to overloads and short circuits. They are more expensive than their asynchronous counterparts and more demanding to maintain - you need to monitor the condition of the brushes.

The harmonic distortion or clear factor of induction generators is lower than that of synchronous alternators. That is, they generate almost clean electricity. On such currents they work more stable:

• adjustable chargers;
• modern television receivers.

Asynchronous generators provide reliable start of electric motors requiring high starting currents. According to this indicator, they are, in fact, not inferior to synchronous machines. They have less reactive loads, which has a positive effect on the thermal regime, since less energy is spent on reactive power. The asynchronous alternator has better output frequency stability at different rotor speeds.

Classification

Squirrel-cage generators are most widely used due to the simplicity of their design. However, there are other types of asynchronous machines: alternators with a phase rotor and devices using permanent magnets that form an excitation circuit.

In Figure 5, for comparison, two types of generators are shown: on the left, on the base, and on the right, an asynchronous machine based on IM with a phase rotor. Even a cursory glance at the schematic images shows the complicated design of the phase rotor. Attention is drawn to the presence of slip rings (4) and the brush holder mechanism (5). The number 3 indicates the grooves for the wire winding, to which it is necessary to apply current to excite it.

Rice. 5. Types of asynchronous generators

The presence of excitation windings in the rotor of an asynchronous generator improves the quality of the generated electric current, but at the same time such advantages as simplicity and reliability are lost. Therefore, such devices are used as an autonomous power source only in those areas where it is difficult to do without them. Permanent magnets in rotors are used mainly for the production of low-power generators.

Application area

The most common use of generator sets with a squirrel-cage rotor. They are inexpensive and require virtually no maintenance. Devices equipped with starting capacitors have decent efficiency indicators.

Asynchronous alternators are often used as an independent or backup power source. They work with them, they are used for powerful mobile and.

Alternators with a three-phase winding confidently start a three-phase electric motor, therefore they are often used in industrial power plants. They can also power equipment in single-phase networks. The two-phase mode allows you to save ICE fuel, since the unused windings are in idle mode.

The scope of application is quite extensive:

• transport industry;
• Agriculture;
• domestic sphere;
• medical institutions;

Asynchronous alternators are convenient for the construction of local wind and hydraulic power plants.

DIY asynchronous generator

Let's make a reservation right away: we are not talking about making a generator from scratch, but about converting an asynchronous motor into an alternator. Some craftsmen use a ready-made stator from a motor and experiment with a rotor. The idea is to use neodymium magnets to make the rotor poles. A blank with glued magnets may look something like this (see Fig. 6):

Rice. 6. Blank with glued magnets

You stick magnets on a specially machined workpiece, planted on the motor shaft, observing their polarity and shift angle. This will require at least 128 magnets.

The finished structure must be adjusted to the stator and at the same time ensure a minimum gap between the teeth and the magnetic poles of the manufactured rotor. Since the magnets are flat, they will have to be ground or turned, while constantly cooling the structure, since neodymium loses its magnetic properties when high temperature. If you do everything right, the generator will work.

The problem is that in artisanal conditions it is very difficult to make an ideal rotor. But if you have lathe and you are ready to spend a few weeks on fitting and fine-tuning - you can experiment.

I propose a more practical option - turning an induction motor into a generator (see the video below). To do this, you need an electric motor with suitable power and an acceptable rotor speed. Engine power must be at least 50% higher than the required alternator power. If such an electric motor is at your disposal, proceed to processing. Otherwise, it is better to buy a ready-made generator.

For processing, you will need 3 capacitors of the brand KBG-MN, MBGO, MBGT (you can take other brands, but not electrolytic). Select capacitors for a voltage of at least 600 V (for a three-phase motor). Generator reactive power Q related to the capacitance of the capacitor by the following relationship: Q = 0.314·U 2 ·C·10 -6 .

With an increase in load, reactive power increases, which means that in order to maintain a stable voltage U, it is necessary to increase the capacitance of the capacitors by adding new capacitances by switching.

Video: making an asynchronous generator from a single-phase motor - Part 1

Part 2

In practice, the average value is usually chosen, assuming that the load will not be maximum.

Having selected the parameters of the capacitors, connect them to the terminals of the stator windings as shown in the diagram (Fig. 7). The generator is ready.

Rice. 7. Capacitor connection diagram

Asynchronous generator does not require special care. Its maintenance consists in monitoring the condition of the bearings. At nominal modes, the device is able to work for years without operator intervention.

The weak link is the capacitors. They can fail, especially when their ratings are incorrectly selected.

The generator heats up during operation. If you often connect high loads, monitor the temperature of the device or take care of additional cooling.

In this article, you will learn how to make a 220 V generator with your own hands using a 2-stroke engine. This generator can be used for various purposes, at home for lighting and connecting small loads, in nature, for lighting a tent or find other applications. It does not have large dimensions, and the parts used are not very scarce.

We collect the necessary components, tools

This unit consists of the following parts:

Of the tools we need:

• Drill or screwdriver + drills and a cross nozzle for self-tapping screws;
• Circular saw or jigsaw (for lovers manual labor a hacksaw will do);
• Voltmeter;
• Screwdrivers, pliers, paint knife or scissors;
• Angle, tape measure.

The principle of operation of the dynamo generator

The basis of our generator is a DC motor, which is able to operate in the generator mode by converting mechanical energy into electrical energy through the phenomenon of electromagnetic induction. The rotation of the armature in the magnetic field of the primary winding of the DC motor provides the motor from the scythe. When rotating in a DC motor in the generator mode, an alternating EMF is formed, which is converted into a constant voltage through the brush collector.

Let's start assembling the unit

Stage one: we fix the engine from the lawn mower

To begin with, we take a piece of the board and cut it preliminarily to the size of our frame. It is advisable to take heavy material so that our equipment has a solid and reliable foundation.

We mark the position of the engine from the lawn mower. Using a paper template, we mark the holes exactly, drilling them with a drill or screwdriver.

We try on both engines on the bed. We disconnect the fuel tank, and we fix the engine from the lawn mower to the seats.

Stage two: we fix the DC motor

We mark the position of the engine. The distance from both motor shafts must be a few centimeters to avoid friction between them.

We center the shafts of our engines. The divergence in the centers is easiest to correct with some kind of spacers, or simply correct the seat on the wooden frame. You can do this with an ordinary chisel. The less backlash between the shafts, the less vibration from the unit and the wear of the moving part.

We mark the pipes. Most often, motor shafts differ in size diameters. This is also fixable if PVC hoses of different diameters are used as connecting pipes. Their flexibility will help to smooth out the smallest inaccuracy in the alignment of the shafts. In our case, the author used two hoses of different diameters, inserting one into the other.

Having cut off the pipes of the length we need, we put three clamps on both sides, pressing them with a screwdriver.

We fix the DC motor on the self-tapping screws, having previously laid them with washers. We connect the shafts by hand and tighten the clamps with a screwdriver.

Now you can fix the fuel tank. It is not difficult to cope with this task using a long self-tapping screw and a cropped cap from a dowel-nail. Don't forget to connect the fuel lines.

Having started the fuel engine with a starter, we measure the voltage at the output with a voltmeter. With a screwdriver, we adjust the fuel supply, and the number of revolutions, on which the voltage depends. Focusing on the rating of the inverter, we set the output voltage with a small margin.

Stage three: connect the inverter

We fix the previously stripped ends of the cables from the DC motor to the inverter terminals. The power indicator will immediately show the activity of the device.

With a simple control (a light bulb with a piece of cable and a plug at the end), we check the operation of our miracle generator.

To connect the electric motor to the inverter, use the terminals.

Step Four: Engine Stop Button

Since we have a driving motor that creates mechanical rotation, it needs a switch. The off button comes with the device, so it only needs to find a convenient place.

Stage five: we make a casing-frame

We make a protective frame from polypropylene pipes with a diameter of 25-32mm, making holes in the frame with a pen drill.

At the corners we connect it with polypropylene fittings.

If there is no plumbing welding machine, the structure can be connected to a specialized glue for PP pipes.

This frame will also help in carrying the device.

Well, to eliminate noise from the vibration of our device, you can fix 4 thrust bearings on the back side of the bed, making them, as shown in the photo, from segments of an old bicycle camera.

Step Six: Starter Battery

In order not to pull the starter of the fuel engine once again, the author of the video used a lithium polymer battery (LiPo) to briefly start the DC motor. This comparative new device can indeed be powerful, and can withstand a large number of duty cycles with minimal loss of capacitive power. Thus, the fuel engine is started electrically, while its starter remains as a backup option.

We connect the output contacts of the battery to the terminals of the inverter through the starting toggle switch, tying the loop of wires with nylon ties. The charging socket can be pulled out on the side for convenient connection for charging.

We also fix the fuel engine shutdown button

Stage seven: test run of the unit

After checking all contact groups and fasteners of prefabricated elements, we start the unit. Engine start and stop buttons must work flawlessly. It is worth noting that the starter battery is used for only a few seconds and then turns off.

For continuous and safe operation of the DC motor and inverter, no special conditions are required, except perhaps protection from moisture and power surges.

As for the lithium-polymer battery, it is unacceptable to deeply discharge it (less than 3.3 V) and in no case allow it to overheat above 60 degrees Celsius. Charging of such devices is also carried out by specialized devices that do not allow overcharging, and before using it in the cold, be sure to warm it up at room temperature.

Fuel engines also need to follow the rules of operation: the correct selection of a combustible mixture, cleaning of air and fuel filters, preventing engine overheating, etc. In a closed room, the exhaust gases from such an engine must be ventilated.

And the rest, such equipment, assembled by oneself, can last for a long time, supplying precious electricity in the country, fishing or just relaxing outside the city!

The electric generator is the main element of an autonomous power plant. If there is no electricity in your private house or cottage, you are wondering how you can fix this problem yourself?

Maybe, great solution will be the purchase of an electric generator in the trading network. But the cost of even low-power models starts at 15,000 rubles, so you need to look for another way out. It turns out he is. It is quite possible to assemble an electric generator with your own hands, and connect it.

This will take a little. Skills in handling tools and knowledge of the basics of electrical engineering. The main engine of the process will be your desire, which is a time-consuming and responsible procedure. An additional incentive would be the possibility of saving a large amount Money.

Do-it-yourself power generators for the home: ways to implement

A bit of theory. The basis for the occurrence of electric current in a conductor is the electromotive force. Its appearance occurs as a result of exposure to the conductor, a changing magnetic field. The magnitude of the electromotive force depends on the rate of change of the flux of magnetic waves. This effect underlies the creation of synchronous and asynchronous electrical machines. Therefore, it is not difficult to convert a current generator into an electric motor and vice versa.

For country house or suburban area DC generator is used extremely rarely. It can be used in a special version for the welding machine. Basically, its scope extends to industry. The alternator is designed to generate electricity in large quantities, so in the country or in a country cottage, it will be an excellent alternative to central power supply. Therefore, to create an alternator at home, we will do the conversion of an asynchronous electric motor with our own hands. The principle of operation of an alternator is to convert mechanical energy into electrical energy. An example of an elementary electrical generator can be seen in the video.

This unique way of producing light is very interesting. Having slightly improved it, we get the opportunity to provide ourselves with lighting on a hike or in nature. The only condition is that you will have to ride a bicycle, taking a small but necessary device.

In this case, to obtain a rotating electromagnetic field of the conductor, we start the engine. Often an internal combustion engine is used. Fuel burning in the combustion chamber gives a reciprocating motion to the piston, which through the connecting rod causes the crankshaft to rotate. He, in turn, transmits rotational motion to the generator rotor, which, moving in the magnetic field of the stator, generates an electric current at the output.

The alternator consists of the following parts:

• a body part made of steel or cast iron, which acts as a frame for mounting the stator and rotor bearing assemblies, a casing to protect the entire internal filling from mechanical damage;
• ferromagnetic stator with magnetic flux excitation winding;
• movable part (rotor) with a self-excited winding, the shaft of which is driven by an external force;
• a switching unit that serves to remove electricity from a moving rotor using graphite current-collecting contacts.

The fundamental components of an alternator, regardless of the amount of fuel consumed and engine power, are the rotor and stator. The first creates a magnetic field, and the second generates it.

Unlike synchronous generators, which have a complex design and lower productivity, an asynchronous analogue has a whole list of significant advantages:

1. Higher efficiency, losses are 2 times lower than those of synchronous generators.
2. The simplicity of the case does not reduce its functionality. It reliably protects the stator and rotor from moisture and used oil, which increases the overhaul period.
3. Resistant to voltage drops, in addition, the rectifier installed at the output protects electrical appliances from damage.
4. It is possible to supply power to high-sensitivity devices with an ohmic load.
5. Durable. The service life is calculated in tens of years.

The main components of an electric generator are a system of coils and a system of electromagnets (or other magnetic system).

The principle of operation of an electric generator is to convert rotational mechanical energy into electrical energy.

The system of magnets creates a magnetic field, and the system of coils rotates in it, turning it into an electric field.

In addition, the generator system includes a voltage tapping system that connects the generator itself to current consuming devices.

One of the most simple ways is to use an asynchronous generator.

To create an electric generator, we need two main elements: an asynchronous generator and a 2-cylinder gasoline engine.

The gasoline engine must be air-cooled, 8 horsepower and 3000 rpm.

An ordinary electric motor with a power of up to 15 kW and a speed of 750 to 1500 rpm will act as an asynchronous generator.

The frequency of rotation of the asynchronous for normal operation must be 10 percent higher than the synchronous number of revolutions of the electric motor used.

Therefore, an asynchronous motor must be untwisted to a speed of 5-10 percent higher than the nominal. How can this be done?

We proceed as follows: we turn on the electric motor in the network, after which we measure the idle speed with a tachometer.

What is meant? Consider the example of an engine whose rated speed is 900 rpm.

Such an engine, when idling, will produce 1230 rpm.

Thus, in the case of the given data, the belt drive must be designed to provide the generator speed, and equal to 1353 rpm.

The windings of our asynchronous are connected by a "star". They generate a three-phase voltage, with a power of 380 V.

In order to maintain the rated voltage in the asynchronous circuit, it is necessary to correctly select the capacitance of the capacitors between the phases.

The containers, there are only three of them, are the same.

If heating is felt, this means that the connected capacitance is too large.

To select the required capacity for each phase, you can use the following data, based on the power of the generator:

• 2 kW - capacitance 60 uF
• 3.5 kW - capacitance 100 uF
• 5 kW - 138 uF
• 7 kW - 182 uF
• 10 kW - 245 uF
• 15 kW - 342 uF

For operation, capacitors with an operating voltage of at least 400 V can be used. When you turn off the generator, an electric charge remains on its capacitors.

Obviously, this means a certain degree of danger of the work being carried out. To avoid defeat electric shock precautions must be taken.

The generator allows you to work with hand power tools.

To do this, you will need a transformer from 380 V to 220 V. When connecting a 3-phase motor to a power plant, it may turn out that the generator cannot start it the first time.

This is not scary - it is enough to make a series of short-term engine starts.

They need to be produced until the engine picks up speed.

Another option is to unroll it manually.

The second option to make a 220 \ 380 V electric generator on your own is to use a walk-behind tractor as a base.

The walk-behind tractor is very widely used for plowing and cleaning suburban areas - but this is far from the limit of its useful uses.

As it turned out, and was confirmed by the experience of a huge number of people, it helps to solve the problem with electricity in houses and outbuildings where it is not connected.

We need a walk-behind tractor and an asynchronous electric motor, the speed of which will be from 800 to 1600 rpm, and power - up to 15 kW.

The motoblock engine and the asynchronous motor must be connected. This is done by using 2 pulleys and a drive belt.

Pulley diameter is important. Namely, it must be such as to ensure that the generator speed is exceeded by 10-15% of the nominal speed value in the electric motor.

In parallel to each pair of windings, we turn on the capacitors. Thus, they will form a triangle.

Voltage must be removed between the end of the winding and its midpoint. As a result, we get a voltage of 380 V between the windings, and a voltage of 220 V between the middle and end of the winding.

After that, you need to select capacitors that will ensure the correct start-up and operation of the generator.

Remember that all three generators have the same capacity.

The relationship between generator power and required capacity is as follows:

• 2 kW - capacitance 60 uF
• 3.5 kW - capacitance 100 uF
• 5 kW - 140 uF
• 7 kW - 180 uF
• 10 kW - 250 uF
• 15 kW - 350 uF

It may be sufficient for you to use just one capacitor for the required loads. Other conditions must be selected in practice independently.

A do-it-yourself electric generator can be used, among other things, for heating a private house or cottage.

In this case, you will need a more powerful gasoline engine, for example, from passenger car, which can be bought at the disassembly.

Connecting an electric generator to a private house how to produce?

1. turn off the electricity in the house;
2. start and warm up the generator;
3. connect the generator to the network;
4. watch for the appearance of a normal power supply;
5. disconnect the generator from the backup network and turn it off (before that, turn off all working electrical appliances in the house).

Be careful: if you perform these steps in the wrong order, the generator may turn on on the contrary, which will cause a breakdown.

Choosing a generator for the home

To determine what generator power you should choose, you need to evaluate the entire active type of loads.

It takes into account all the light bulbs, electric kettle, microwave, heaters, power tools. That is, all the devices that you plan to use.

For example, if you are going to use a couple of appliances and a few more light bulbs, you should add up the total power they consume.

So, for a situation where you need to make 6 light bulbs with a power of 100 W shine, an oil heater with a power of 1.5 kilowatts and a microwave oven with the same power work, the calculation is as follows: 1.5x2 + 600 (100 W for 6 lamps) \u003d 3.6 kilowatts.

It is this power (or a little more) of the generator that you need.

And also you can watch the video of the electric generator with your own hands

Tailored for you:

Do-it-yourself generator for 220 volts. Now blackouts are not terrible. Do-it-yourself generator for 220 volts

How to make an electric generator with your own hands, we analyze in detail

Constant and uninterrupted supply of electricity in the house is the key to a pleasant and comfortable pastime at any time of the year. To organize self-catering suburban area, we will have to resort to mobile installations - electric generators, which in last years especially popular due to the large range of different capacities.

Scope of application

Many are interested in how to make an electric generator for a summer cottage? We will talk about this below. In most cases, an asynchronous alternator is applicable, which will produce energy for the operation of electrical appliances. In an asynchronous generator, the speed of rotation of the rotors than in a synchronous one and the efficiency will be higher.

However, power plants have found their application in a wider range, as an excellent means for extracting energy, namely:

• They are used in wind farms.
• Used as welding machines.
• They provide autonomous support for electricity in the house on a par with a miniature hydroelectric power station.

The unit is switched on using the input voltage. Often, the device is connected to power to start up, but this is not entirely logical and rational decision for a mini-station, which itself must generate electricity, and not consume it to run. Therefore, in recent years, generators with self-excitation or series switching of capacitors have been actively produced.

How an electric generator works

An asynchronous power generator produces a resource if the speed of rotation of the motor is faster than synchronous. The most common generator operates on parameters from 1500 rpm.

It produces power if the rotor at start is running faster than the synchronous speed. The difference between these figures is called slip and is calculated as a percentage of the synchronous speed. However, the stator speed is even higher than the rotor speed. Due to this, a stream of charged particles is formed that changes polarity.

Watch the video, how it works:

When energized, the connected power generator device takes control of the synchronous speed by independently controlling the slip. The energy leaving the stator passes through the rotor, however, the active power has already moved to the stator coils.

The basic principle of operation of an electric generator is to convert mechanical energy into electrical energy. To start the rotor to generate power, a strong torque is needed. The most adequate option, according to electricians, is "perpetual idling", which maintains one speed of rotation during the operation of the generator.

Why use an asynchronous generator

Unlike a synchronous generator, an asynchronous one has a huge number of advantages and benefits. The main factor in choosing the asynchronous option was the low clear factor. A high clear factor characterizes the quantitative presence of higher harmonics in the output voltage. They cause useless heating of the motor and uneven rotation. Synchronous generators have a clear factor value of 5-15%, in asynchronous generators it does not exceed 2%. It follows from this that an asynchronous power generator produces only useful energy.

A little about the asynchronous generator and its connection:

An equally significant advantage of this type of electric generator is the complete absence of rotating windings and electronic parts that are sensitive to damage and external factors. Hence, this species devices are not subject to active wear and will last longer.

How to make a generator with your own hands

Device asynchronous alternator

The purchase of an asynchronous electric generator is a rather expensive pleasure for the average resident of our country. Therefore, many craftsmen resort to solving the issue of self assembly apparatus. The principle of operation, as well as the design, is quite simple. With all the tools, assembly will not take more than 1-2 hours.

According to the above-described principle of operation of the electric generator, all equipment should be adjusted so that the rotations are faster than the engine revolutions. To do this, you must connect the engine to the network and start it. Use a tachometer or tachogenerator to calculate RPM.

After determining the value of the engine speed, add 10% to it. If the rotation speed is 1500 rpm, then the generator should be running at 1650 rpm.

Now you need to remake the asynchronous generator "for yourself", using capacitors of the required capacities. Use the following plate to determine the type and capacity:

DL capacity table

We hope that it is already clear how to assemble an electric generator with your own hands, but please note: the capacitance of the capacitors should not be very high, otherwise the generator running on diesel fuel will get very hot.

Install the capacitors according to the calculation. Installation requires a fair amount of attention. Ensure good insulation, if necessary, use special coatings.

Based on the engine, the generator assembly process is completed. Now it can already be used as a necessary source of energy. Remember that in the case when the device has a squirrel-cage rotor and produces a sufficiently serious voltage that exceeds 220 volts, it is necessary to install a step-down transformer that stabilizes the voltage at the required level. Remember that in order for all appliances in the house to work, there must be strict control of a home-made 220-volt electric generator in terms of voltage.

Watch the video, the stages of work:

For a generator that will run at low power, single-phase induction motors from old or unwanted household appliances, such as washing machines, drainage pumps, lawn mowers, chainsaws, etc., can be used to save money. Motors from such household appliances should be connected in parallel with the winding. Alternatively, phase-shifting capacitors can be used. They rarely differ in the required power, so it will need to be increased to the required performance.

Such generators show themselves very well when it is necessary to power light bulbs, modems and other small devices with a stable active voltage. With certain knowledge, you can connect an electric generator to an electric stove or heater.

The ready-to-use generator should be installed so that it is not affected by precipitation and the environment. Take care of an additional casing that will protect the installation from adverse conditions.

Almost every asynchronous generator, whether it is a brushless, electric, gasoline or diesel generator, is considered a device with a fairly high level of danger. Handle such equipment very carefully and always keep it protected from external weather and mechanical influences or make a casing for it.

Watch the video, practical advice from a specialist:

Any autonomous unit should be equipped with special measuring instruments that will record and display performance data. To do this, you can use a tachometer, voltmeter and frequency meter.

• Equip the generator with an on/off button if possible. You can use manual start to start.
• Some power generators need to be grounded before use, carefully assess the area and select a site for installation.
• When converting mechanical energy into electrical energy, sometimes the efficiency can drop up to 30%.
• If you are not confident in your abilities or are afraid to do something wrong, we advise you to purchase a generator in the appropriate store. Sometimes the risks can turn out to be extremely deplorable ...
• Monitor the temperature of the asynchronous generator and its thermal regime.

Results

Despite their ease of implementation, homemade power generators are very painstaking work that requires complete focus on design and proper connection. The assembly is financially feasible only if you already have a workable and unnecessary engine. Otherwise, you will pay more than half of its cost for the main element of the installation, and the total costs may significantly exceed the market value of the generator.

Now you know how to make an electric generator and if you firmly decided to create it, we hope you got answers to all your questions before starting the assembly and now you can get to work with a full knowledge base.

In conclusion, I would like to offer you the assembly of a wonderful invention of one engineering student. This is a weak generator that can save you in difficult times without spending money even on fuel.

generatorvolt.ru

Homemade generator. All ways with your own hands

Method 1

I found an article on the Internet on how to convert a car generator to a permanent magnet generator. Is it possible to use this principle and remake the generator with your own hands from an asynchronous electric motor? It is possible that there will be large energy losses, not such an arrangement of coils.

I have an asynchronous type motor for a voltage of 110 volts, revolutions - 1450, 2.2 amperes, single-phase. With the help of containers, I do not undertake to make a home-made generator, as there will be large losses.

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

If you change the engine or generator with rounded magnets from the speakers, then you need to install them in crabs? Crabs are two metal parts, anchored outside the excitation coils.

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

If you change the connection of the windings and make parallel connection, disperse to revolutions above normal values, it turns out 70 volts. Where can I get a mechanism for such revolutions? If you rewind it to a decrease in speed and lower power, then the power will drop too much.

An induction motor with a closed rotor is iron, which is filled with aluminum. You can take a homemade generator from a car, which has a voltage of 14 volts, a current of 80 amperes. This is good data. Motor with AC collector from a vacuum cleaner or washing machine can be applied to the generator. Install bias on the stator, remove the DC voltage from the brushes. According to the highest EMF, change the angle of the brushes. The efficiency tends to zero. But, better than a synchronous type generator, they did not invent.

I decided to try a homemade generator. A single-phase asynchronous motor from a baby washer twisted with a drill. I connected a capacitance of 4 microfarads 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 in this way. 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 to 3. One of them is mechanical energy. If the power plant is disconnected from the socket, then all conversion is lost.

It is clear where the movement of the wire with an increase in speed comes from. Where the magnetic field will be to obtain the EMF in the wire is not clear.

It's easy to explain. Due to the mechanism of magnetism that remains, an EMF is formed in the armature. There is a current in the stator winding, which is closed to the capacitance.

The current has arisen, which means that it gives an increase in the electromotive force on the coils of the rotor shaft. The emerging current gives an increase in the electromotive force. The stator electric current generates much more electromotive force. This goes until the equilibrium of the stator magnetic fluxes and the rotor is established, 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 the old motors, which supposedly are not excited. After accelerating the rotor of a motor or generator, it is necessary to poke quickly into any phase with a small amount of volts. Everything will return to normal. Charge the capacitor to a voltage equal to half the capacitance. Turn on with a three-pole switch. This applies to a 3-phase motor. Such a scheme 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 tricky design (has a special design solution), it is possible to adjust the output voltage. I made a generator of this kind with my own hands at the construction site. The engine took a power of 7 kW at 900 rpm. I connected the excitation winding according to the triangle circuit for 220 V. I started it at 1600 revolutions, the capacitors were 3 at 120 microfarads. They were switched on by a contactor with three poles. The generator acted as a three-phase rectifier. From this rectifier, an electric drill with a 1000-watt collector was fed, and a circular saw for 2200 watts, 220 V, grinder 2000 watts.

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

For motors with manifolds, this is not correct. If the rotating frequency is doubled, then the capacitance will also decrease.

The frequency will also increase. The tank circuit was switched off in automatic mode so as not to use the reactivity torus, not to consume fuel.

During operation, it is necessary to press the stator of the contactor. Three phases dismantled them out of uselessness. The reason lies in the high gap and increased field dissipation of the poles.

Special mechanisms with a double cage for squirrels and slanting eyes for squirrels. Still, I received 100 volts and a frequency of 30 hertz from the washing machine motor, the 15-watt lamp does not want to burn. Very weak power. It is necessary to take the motor stronger, or put more capacitors.

Under the wagons, a generator with a squirrel-cage rotor is used. Its mechanism comes from a gearbox and a belt drive. Turns of rotation 300 turns. It is located as an additional load generator.

Method 3

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

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

The engine speed must be increased, do not reduce under load, then the power supply to the network will be constant.

Significant power is needed, the autogenerator will not give such power. If you rewind a large KAMAZ one, 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 to connect the load through a 3-phase power supply (rectifier). The lights were turned off in the garages, it didn't work. In the city of power engineers, the electricity is systematically turned off, so it is necessary to make a source of constant power supply with electricity. For electric welding there is a hitch, it is hooked to the tractor. To connect an electric tool, you need a constant voltage source of 220 V. There was an idea to design a home-made generator with your own hands, and an inverter to it, but you can’t work on batteries for a long time.

The electricity was recently turned on. I connected an asynchronous motor from Italy. I put it with the chainsaw motor on the frame, twisted the shafts together, put a rubber clutch. I connected the coils according to the star scheme, the capacitors in a triangle, 15 microfarads each. When I started the motors, the power output did not work. I attached a capacitor charged to the phases, the voltage appeared. The engine gave out 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 from him worked fine at 950 watts.

I tried to increase the engine speed, but the excitation does not work. After the contact of the capacitor with the phase, the voltage appears immediately. I will try to install another engine.

What system designs are produced abroad for power plants? On 1-phase, 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 gives 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 an asynchronous motor connected. A successful attempt to make a home-made generator turned out to be the connection of an old engine with a cast iron housing for 1 kW and 950 rpm. The motor is excited normally, with one capacitance of 40 uF. And I installed three containers and connected them with a star. This was enough to start an electric drill, a grinder. I wanted to get the output of voltage 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 burned out. I will wind the transformer in three phases.

electronics.ru

How to make a 220 volt gas generator with your own hands and what is needed for this?

There is no need to look for the benefit of your own gas generator, it lies on the surface.

Owners of garages, summer cottages, private houses (provided that these objects have an unreliable power supply, or are not electrified at all) have long appreciated the benefits of backup power supply.

Even if you live in cottage village with a normal supply of electricity, emergency situations are possible. Loss of energy for a long time will lead to spoilage of food in the refrigerator in summer, and malfunctions of the heating boiler in winter.

Therefore, many homeowners purchase industrial generators, the cost of which cannot be called economical.
Another direction for mobile power plants is tourism, expeditions and offline work using power tools.

This useful device does not belong to too complex devices, so it is quite possible to assemble a gas generator with your own hands, including for 220 volts.

Of course, the main reason for this decision is the desire to save money. If you buy components for a mobile power plant in a store, the cost of parts will exceed the savings on assembly.

Therefore, a home-made gas generator will become profitable only if there are shareware components.

The most expensive spare parts are: a drive (gasoline engine) and an electric motor that will act as a generator. It is they who must be selected from the “junk” available in the storerooms.

What power plant can be selected for the generator?

First of all, power. In mobile power plants, the following ratio is applied: for each kilowatt of electricity generated (not in peak, but in normal mode), 2-3 l / s of the engine is supplied.

Important! This proportion works with well-chosen components and minimal losses. It should be remembered that even the most inexpensive generator from the Celestial Empire was designed by engineers.

As a rule, gas generators are developed in a complex, that is, a generating element is developed for a specific motor. For a home-made installation, you should choose a coefficient of 2-4 l / s per 1 kilowatt of energy. Otherwise, at full load, the engine will quickly fail.

In practice, when assembling a power plant “from what was”, home craftsmen often install a motor / generator pair without preliminary calculation. Sometimes there are options for “splicing” a sufficiently powerful engine, on the occasion of a bottle of moonshine bought from a familiar ensign, with a motor from sewing machine. And vice versa.
It is recommended to collect as much technical information about the components as possible before calculating their compatibility.

Important! When calculating the generator/engine pair, the final load power (taking into account the electrical body kit and conversion losses) should be taken into account, and not the net power on the generator winding.

Chainsaw or trimmer engine

Unpretentious mechanism, very easy to maintain. Usually two stroke.
This scheme has both advantages and disadvantages. On the one hand, you are not worried about the question of what kind of oil to fill in the gas generator (it is added to gasoline, like on old mopeds). Maintenance actually absent as a class.

On the other hand, high fuel consumption and a pungent smell from the muffler. The removal of exhaust gases from the gas generator is mandatory, especially if it is located near the dwelling.

The power does not exceed a few l / s, respectively, the generator is enough for lighting, maintaining the heating boiler pump and charging for a mobile phone. With a light load, it can work for a couple of hours.

Motor from a wheeled lawn mower

Such units are not very common with us, but you can find a suitable instance of a motor from a broken unit.
Power reaches 3-5 l / s, this is already an application for good nutrition for country house. You can even turn on a small refrigerator. Four-stroke models come across. This allows you to save fuel, get a more environmentally friendly exhaust, and there is less noise from such engines. Maintenance is more complicated, however, this fact levels out high reliability, and the ability to work 4-6 hours under load.

Engine from a moped (motorcycle)

The moped motor is suitable for medium power generators. Depending on the model, you can remove the power of 2-3 kW.

An engine from a motorcycle (such as Java or IZH) is generally a godsend for a generator.
A power of more than 25 l / s allows you to safely connect a 5 kW generating set. This is a complete power source for a private home. If you also use the gearbox, you get a relatively economical installation. Running the generator will allow you to find out at what speed power is generated with an effective load.

The main advantage of such motors is ease of maintenance and the ability to work for a long time. Perhaps the most affordable (in terms of search) option.

Important! When using such motors, forced ventilation must be provided.

Otherwise, the cylinders may overheat. Engines for mopeds and motorcycles are designed for operation in the oncoming air flow.

Don't let this sound like an overly ambitious idea. Finding an engine from Moskvich or Zaporozhets in the car market is not difficult. The cost is cheap, you can buy two at once, for spare parts.

Such units are repaired with electrical tape and pliers. If a respected reader has a different opinion, for you this material is not a guide to action, but simply interesting information.
Converting such a motor into a drive for a gas generator with your own hands is not difficult. Set on a solid foundation, put the accelerator and clutch on the manual drive, and you can even use the gearbox.

The main advantage is a virtually unlimited period of work. The cooling of the motor from ZAZ is air, it blows on itself. You do not even have to connect the electric starter for the gas generator with your own hands, the engine simply starts with the key from the standard starting system.

The power of 30-40 l / s allows you to assemble a generator of 10 kW. True, it will be more of a stationary than a mobile option.

How to make a gas generator with a ready-made power plant?

The answer lies on the surface - connect the generator to a gasoline engine. Where to get it? Any electric motor, with the correct organization of the winding excitation system, becomes a generator.

There are two ways to create homemade generators:

It receives torque from your car's engine and produces 14 volts DC.
You don't have to invent anything. It is enough to look at the power characteristics, and choose a small engine from those listed above.

The main condition is a working voltage regulator and preferably "live" windings. However, if you got a burnt copy - it does not matter. Any radio amateur knows how to remove the anchor from the electrical installation of a gas generator.

You can rewind the winding in one evening. In principle, if you can assemble a mini power plant on your own, you can sit down to write a book: "Faults in the gas generator and how to fix them." This is an extremely rewarding experience.

The breakdown of the power source in the open field is a problem. And someone familiar with the Kulibin device will be able to restore work without calling the wizard.
The only drawback, however, is significant - the voltage is 12-14 volts. Lighting, charging mobile devices, connecting music and a computer - no problem. But for the house you need 220 volts. A voltage converter will help out, for example, from an old uninterruptible power supply.

Here the situation is more complicated (albeit cheaper, there is no need to look for a converter). Any electric motor can be made a generator by connecting it to the drive.
There are nuances. To excite the windings in generator mode, a capacitor circuit is required (see figure) and an accurate selection of revolutions.
If you have read up to this point, it makes no sense to explain how to get one phase of 220V from a 3-phase 380V source. This is the topic of a separate article.

You need a tachometer to measure RPM. You connect the motor to the network, and measure the speed of rotation. Add 5% -10% to the received revolutions, and you get the optimal shaft rotation speed to excite the generator windings.

Homemade 220 volt gas generator from a GAZ 21 engine and a 15 kW alternator - video

Conclusion:

It is possible to collect an autonomous energy source. And with some effort - almost free.

obinstrumente.ru

Do-it-yourself generator for 220 volts. Now blackouts are not terrible / Sudo Null IT News

Required:

- a collector motor, you can use another 12 volt one - a nozzle on the motor axis - a drill chuck - an uninterruptible UPS or an inverter from 12 to 220 - a 10 amp diode: D214, D242, D215, D232, KD203, etc. - wires - bike - and preferably a 12 volt battery

Assembly:

- we fix the bike so that the rear wheel spins freely, we hang it out - we fasten the cartridge to the motor axis - we fasten the motor so that the cartridge is pressed tightly against the wheel, you can tighten it with a spring - we 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 plus of the battery - we connect the battery to the uninterruptible power supply or to the inverter That's it! You can connect consumers to 220 volts to an uninterruptible power supply and use electricity! As soon as the battery is discharged, it will be enough to pedal and in about an hour the battery will be charged.

Where to get details?

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

My experience:

www.habr.com

Do-it-yourself generator for 220 volts. Complete autonomy from power lines! | SvetVmir.ru

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

Required:

A collector motor, you can have another 12 volt attachment - a nozzle on the motor axis - a cartridge from a drill - an uninterruptible UPS or an inverter from 12 to 220 - a 10 amp diode: D214, D242, D215, D232, KD203, etc. - wires - bicycle - and preferably a 12 volt battery

Assembly:

We fix the bike so that the rear wheel spins freely, we hang it out - we fasten the cartridge to the motor axis - we fasten the motor so that the cartridge is pressed tightly against the wheel, you can tighten it with a spring - we connect the motor to the battery: the negative wire of the motor to the battery negative, positive motor wire to diode anode, diode cathode to plus battery - battery we connect with an uninterruptible power supply or with an inverterEverything! You can connect consumers to 220 volts to an uninterruptible power supply and use electricity! As soon as the battery is discharged, it will be enough to pedal and in about an hour the battery will be charged.

Where to get details?

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

My experience:

I've been using this generator for a few months now and it showed pretty good results! The charging current of the battery was about 10 amps and depended on how you pedal. If you twist slowly, it turned out 5 amperes, if you twist as quickly as possible, then 20 amperes. The average generator power is 120 watts. I mainly used low power consumers:

3 W - phone charging - 5 W - radio receiver - 7 W - charging and using a tablet - 10 W - camera, flashlight and video camera charger - 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 again it was possible to use electricity.

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

svetvmir.ru

Do-it-yourself gas generator at home: video and details

Situations with power outages or the absence of a mains supply make you think about a backup power source. A good solution to the problem is to buy or make a gas generator with your own hands.

Among all existing generators, gasoline is in the first place in popularity.

Why are they good?

• Easy to operate;
• Compact and mobile;
• Have high performance;
• Easily repaired;
• Cheaper than diesel generators.

Gasoline generators are used during emergency shutdowns as a replacement for the current source. They help out the owners of dachas, construction sites where energy has not yet been supplied, provide a decent life for geologists, rangers, reindeer herders, drillers - everyone who is forced to work in hard-to-reach areas. A good helper for home craftsmen in the country or in the garage. They make it possible to replace manual labor with mechanized labor even where the use of electricity is not available. Lighting, electrical appliances and tools, household appliances are connected through the generator.

When connecting devices, pay attention to the allowable voltage - if the generator is designed for 127 Volts, then devices made for 220 Volts will not be able to work with the declared power.

The time of uninterrupted operation of the gas generator depends on the power of the device, the volume of the fuel tank, and the load. There are models that can provide work under load up to one and a half thousand hours.

Device

The principle of operation of a gasoline generator is based on the conversion of energy obtained from the combustion of gasoline into electrical energy. Components of a gas generator:

• Gas engine;
• Electric motor 127, 220 or 380 V;
• Fuel tank;
• starting starter;
• Capacitors;
• Electrical machines and switches;
• Voltmeter;
• Sockets for connecting electrical appliances.

Industrial models are equipped with additional functions that allow you to control all operating parameters. ATS (automatic input of backup power in emergency situations) is especially convenient. The whole device is mounted on a convenient rigid frame, equipped with wheels and handles for transportation. The factory casing is much more beautiful and stronger than a homemade one. Below is a drawing showing all the details of a gasoline generator.

For those who are well versed in electrical engineering and know how to work with their hands, making a gas generator with their own hands will not be difficult.

Where to begin?

Based on the magnitude of the required loads for the simultaneous inclusion of devices, all the main elements are selected.

Optimum performance values ​​are achieved the right choice power of gasoline and electric engines.

To obtain a single-phase current of 220 V, a two-stroke gasoline engine is suitable, and if you plan to receive higher powers, then the choice should be stopped at a four-stroke one. Fuel consumption will depend on the selected engine. In addition to the main task - energy generation, a system for noise reduction, lubrication, ventilation, and the installation of an exhaust pipe for exhaust gases should be provided. You will have to buy wheels to ensure the mobility of the device. The casing can be made of metal or plywood.

A gas generator based on a two-stroke gasoline engine will help out if a short-term connection is needed. When you need to work for a long time and with a heavy load, it is better to make a generator with a four-stroke gasoline engine.

The control panel must have a voltmeter, a circuit breaker button, grounding terminals, sockets for using the generated energy.

Study self-manufacturing a gas generator makes sense when you have unused engines from old appliances. You can, of course, buy all the components specifically for these purposes, but you won’t be able to get big savings - the cost of components may even exceed the price of a finished factory model.

In practice, motorcycle or automobile engines, engines from mowers, chainsaws and other devices are often used.

Generator with engine from car Volga 21

The simplest gas generator

As an example, let's analyze the simplest home-made design based on a chainsaw and an electric motor from an old washing machine:

1. We attach the electric motor from the washing machine to the chainsaw tire using a specially made stable bracket.
2. We put pulleys on the drive shafts of both engines and connect them using a belt drive.
3. The button for adjusting the speed of the chainsaw engine, located on the handle, is equipped with an additional device for adjusting the pressing force. A simple bolt secured with a yoke will do the job just fine. To increase the speed, it will be enough to twist it, and to reduce it, loosen it.
4. We connect two capacitors in parallel to the external starting winding of the electric motor, designed for a power of 400-450 Volts.

The video shows a generator with an engine from a washing machine

This installation, the simplest in its design, is capable of delivering a current of 220 V 180 A, which is enough to power a drill, screwdriver, and lighting fixtures.

Such an elementary device can be made by almost any master. Of course, except for cases when a person does not see the difference between an engine and a carburetor, or the words bracket and container sound the same for him. It is completely unacceptable to manufacture electrical appliances for a person who does not know the differences between the concepts of power (watts), current strength (amperes) and circuit voltage (volts). More complex designs require fundamental knowledge and skills that will help to correctly calculate the power of engines, ensure the safe use of the finished structure, and correctly configure all parameters.

On the Internet, on forums, masters discuss different homemade designs. For those wishing to join the ranks of the Samodelkins, participating in discussions will bring many benefits - you can get a lot useful tips on the device of a new one or the repair of an old one. Visually see the manufacturing process will help special videos. Which muffler to choose, electric starter, whether it is possible to make an autorun function - all questions of interest can be answered. Would you like to go further and put a wind turbine on the site to save electricity? What current is needed at the output - 12 or 16 A? There are enough instructions on any topic, study and apply the best of them in practice.

Those who decide to make a gas generator with their own hands need to correctly assess their capabilities. Unsuccessful attempts can cause damage to household appliances or even become a threat to life.

The video shows another do-it-yourself generator, let's see

Work with electrical devices makes high demands on safety and does not forgive negligence. Be very careful and careful!

Pros and cons of a homemade unit

• The ability to "extend the life" of old motors;
• If repairs are needed, there will be no difficulties - you know every screw of the structure;
• Increasing self-esteem - a well-made functional device will become your pride;
• Possibility to use as power during welding;
• Saving money, replacing manual labor with a more progressive one.

1. The complexity of the process, many operations require special tools and facilities.
2. In the manufacture of devices at home, many of the functions that are present in industrial designs are omitted.
3. If there are no old parts in stock, then buying new ones in stores can be too expensive.
4. There is no possibility of connecting ATS (automatic input of the reserve).

A homemade gas generator can be a good alternative to factory models in cases where there is not enough money to buy or the need for its use occurs infrequently. For permanent and regular use, it is better to purchase a ready-made gas generator for 220 or 380 Volts with a factory warranty. Unless, of course, the alteration of various devices and devices is not your favorite pastime. And it is desirable that you have skills in different jobs - it will require a lot of manual operations, welding and installation work.

generatorexperts.com

DIY 220 volt generator

Ecology of consumption. I used this generator for several months and it showed quite good results! The charging current of the battery was about 10 amps and depended on how you pedal.

Generator - 220 volts with your own hands! We need .- a collector motor, you can use another 12 volt one - a nozzle on the motor axis - a drill chuck - an uninterruptible UPS or an inverter from 12 to 220 - a 10 amp diode: D214, D242, D215, D232, KD203, etc. - wires - a bicycle - and preferably a 12 volt battery

We fix the bike so that the rear wheel spins freely, we hang it out - we fasten the cartridge onto the motor axis - we fasten the motor so that the cartridge is pressed tightly against the wheel, you can tighten it with a spring - we connect the motor to the battery: the negative wire of the motor to the battery negative, positive motor wire to the anode of the diode, the cathode of the diode to the plus of the battery - we connect the battery to an uninterruptible power supply or to an inverter That's it! You can connect consumers to 220 volts to an uninterruptible power supply and use electricity! As soon as the battery is discharged, it will be enough to pedal and in about an hour the battery will be charged.

Where to get details?

The motor can be bought at a car shop: cooling fan motor. It is not expensive. And if you want almost for nothing, then it can be twisted at the metal collection point, from an old car. - an uninterruptible power supply from a personal PC, you can use an old one with a worthless internal battery. Or an inverter 12 - 220, sold in automotive stores. - a 10 amp diode, for example: D305, D214, D242, D243, D245, D215, D232, D246, D203, D233, KD210, KD203, etc. Sold in radio spare parts stores. Or you can unscrew it from the old technology.

My experience:

I've been using this generator for a few months now and it showed pretty good results! The charging current of the battery was about 10 amps and depended on how you pedal. If you twist slowly, it turned out 5 amperes, if you twist as quickly as possible, then 20 amperes. The average generator power is 120 watts. I mainly used low power consumers:

3 W - phone charging - 5 W - radio receiver - 7 W - charging and using a tablet - 10 W - camera, flashlight and video camera charger - 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 again it was possible to use electricity. published by econet.ru

P.S. And remember, just by changing your consumption, we are changing the world together! © econet

A simple generator consists of just a few parts. It doesn't even have radio components!

Let's start with circuit diagram this device, here it is:

The design consists of three parts:

1. Generator
2. Switch
3. Multiplier

I started the build with a generator.

First I found a broken coffee grinder (To be honest, I don't know what to call it correctly, most likely a manual vegetable cutter), here it is:

Later it turned out that it was a vegetable cutter. Here, on the Internet, I found how it looked in working order:

From it I needed only the upper part with a handle. It contains a gearbox - what we need!

After that, I got a flower pot and an engine from a printer:

Then I screwed the pot to the board with self-tapping screws (I screwed it to the board to hold it tighter).

I looked at the motor, tried to screw it to the gearbox rotor, but, unfortunately, I failed :(

And then I found the DPM engine:

He approached. I decided to put it on. To do this, I drilled a hole and screwed the motor axle into it (It was threaded):

Previously, I looked to see if the motor was suitable in height, in relation to the bottom of the pot and the height of its walls:

Next, I made two holes on the sides of the pot:

Then I inserted a thick hard wire into them, making a loop under the diameter of the motor housing:

I also made a hole, also in the wall, but closer to the base:

I threaded the wires from the motor into this hole.
After that, almost the very end, it remains only to strengthen our structure - this is at your discretion. Personally, I wrapped the entire device with tape.

Hooray! The device is ready! Now I conducted a test on it - I connected the counters:

The ammeter showed the highest mark.

That's basically all ... Our manual generator produces about 2 volts at the output, it also depends on the model of your engine, I had a DPM - 30N 2 - 04.

Later I installed a voltage multiplier, here is the most standard doubler circuit (not mine, dug up on the Internet):

List of radio elements

Designation	Type	Denomination	Quantity	Note	Shop	My notepad
	Diode	high voltage	2	You can take any		To notepad
	Capacitor	400uF*450V	2	For multiplier		To notepad
	Engine	Any	1	Any		To notepad
	Ammeter	Any	1	You can take another, for example, a voltmeter