How Does Generator Work?

Generators are stated to be one of the essential appliances that have the capability of supplying electric power whenever there is a power shortage or power outage. It will prevent the discontinuity or interruption in the daily activities of a person or business operation.

Different types of generator are available in the market, each having a different physical and electrical configuration. We all are aware of the task that the generator does, but it is imperative to know how it is generating so much of electricity and what are the components that are helping it to do it efficiently.

The Working Principle Of A Generator

The electric generator will help in converting the mechanical energy, which it is obtaining from the external sources and convert it into the electrical energy as an output. It is crucial to understand that the generator is not creating any electrical energy, but it is converting one form of energy to another form. One can compare the generator with that of the water pump whose job is to allow the flow of water and not to create any water. If you want to know how does generator work, then the answer is electromagnetic induction.

There are commercial and residential generators that are dependent on the use of traditional fuel like gas, propane, diesel for converting the mechanical power into the electrical current. After the generation of the electric current, it will flow through the copper wires towards the external machine or devices. Whenever the conductor is moving in the magnetic field, it will create the electrical charges and will help in the flow of current.

Components Of A Generator

1. Engine:

The engine is responsible for supplying the energy in the generator. The engine power will determine the total amount of electricity that the generator is capable of providing. To understand the output power that the generator can afford, you need to look into the size of the engine as they are directly proportional. The fuel that you are using in the generator will also determine whether the engine will work optimally or not.

2. Alternator:

The alternator is responsible for the conversion of the mechanical energy into electrical energy and is also known as the gen head. The alternator has stationary and moving parts which, when syncs together, will help in creating the magnet electromagnetic field. The electrons and its movement that frequently happens in the alternator is responsible for the generation of electricity in the generator. The alternator is an essential point of how does generator works.

3. Fuel System:

The output electricity that we expect from the generator is only created because of the fuel system. It helps in creating the energy by using the fuel that comes from the fuel pump. There is a pipe that is connecting the engine with the tank and the return pipe. The generators also come with the fuel filter that will help in removing the debris before it enters the engine. The injector is also present in the generator which will help the fuel to reach the combustion chamber.

4. Voltage Regulator:

Voltage regulator is an integral part of any generator as it is responsible for the output voltage. It will help in converting AC voltage into the DC voltage. It will also do the vice versa. The rotating rectifiers and exciter windings are connected. The cycle will continue until the generator is producing enough output voltage which can help the generator to work optimally. Whenever you are adding a load to the generator, the output voltage will reduce a little bit.

5. Exhaust And Cooling System:

When the generator is in working condition, it will create a lot of heat. This is one of the reasons why it is integrated with the colling system that will prevent overheating. Overheating can reduce the efficiency of the machine. These generators also come with the exhaust system that will help in moving and directing the fumes that are created during the operation. The cooling system and exhaust system will make you understand how does a generator work.

6. Lubrication System: 

The generator is made up of several moving parts that comprise the engine; hence, it will require lubrication to ensure smooth operation and durability. The oil that is stored in the pump will help in lubricating the generator engine. In every 8 hours, one will have to check the generator’s lubrication. One must also know about how does generator transfer switch work.

7. Battery Charger:

Batteries are used in the generator for starting up of the machine. This is an electronic component which will ensure that the battery of the generator is charged continuously with the help of float voltage. When there is a low float voltage, the battery will stay undercharged. When the float voltage increases, it will reduce in the life of the battery.

8. Control Panel:

The control panel or the user interface of a generator is one of the essential parts of a generator. It will enable all people to learn about private information. There are different features of the control panel that are available in the market. The electric panel that is electronic will start automatically whenever there is any power outage, and it will also monitor it.

Engine Gauges is another feature of any control panel that will indicate various vital parameters like oil pressure, battery voltage, temperature, the rotation speed of the engine, and the duration of the operation. It will also show various parameters like operating frequency, voltage, and output current. You will get several options that you can control with the help of auto or manual mode.

9. Main Frame or Assembly:

Every generator both stationary and portable comes with customized housing, which will provide structural base support. This frame will also help the generator in earthing it to ensure safety.


By looking into all the points mentioned above, you can easily understand how does inverter generator work. All the components, when syncs together, will help in generating electricity.

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