A generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output. It is important to understand that a generator does not actually create electrical energy. Instead, it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit. This flow of electric charges constitutes the output electric current supplied by the generator.
Generators are useful appliances that supply electrical power during a power outage and prevent discontinuity of daily activities or disruption of business operations. They are available in different electrical and physical configurations for use in different applications. The energy source harnessed to turn the generator varies widely, and can include steam turbines, gas turbines, water turbines, internal combustion engines, and more.
The main components of an electric generator include the frame, rotating shaft, armature, stator, exciter, fuel system, voltage regulator, cooling and exhaust systems, and lubrication system. There are different types of generators, including standby generators, portable generators, and mobile generators. Generators require maintenance to ensure they continue to function properly.
