The electronic generator can convert mechanical energy to electrical energy by forcing an electric current to pass through an outer circuit. A reciprocating or turbine steam engine can be the source of this mechanical energy in the electron generators. Other sources could be combustion engines of interior design, water that may pass through a water wheel or turbine, a hand crank, any compressed air, a wind turbine, or any other mechanical energy resources.
For all the electrical power grids the power is offered by these generators. These generators are the wonder of technology that is solving all our power troubles with much ease. An electric motor present in the generator transforms this electrical energy into the form of mechanical energy. Many common and popular generators have motors that are mechanically driven in order to create electricity.
Kinds of Generators
1. Dynamo: The electrical generator that can produce the direct type of current is known as a dynamo and it creates the current with the use of a commutator. The first of the generators that we’re able to deliver power for the industry was a dynamo. These dynamos also created the foundation for many other future generators that could produce electric power.
Devices like electric motors, rotator converter, and alternating current alternator were also based upon these dynamos. The simple alteration of this dynamo technology rules over the power generation done on the large scales that enhances efficiency, cost-effectiveness, and reliability in these electronic generators. Devices like power rectification that converts alternating current to direct current are very cost-effective and efficient. The mechanical commutator is the only drawback of this dynamo.
2. Induction Generator: The principle of induction motor is used in this asynchronous generator or induction generator which is the category of AC electrical generator that produces effective power at a very low cost. It gives a negative slip by faster rotation of their induction generator than the synchronous speed. These are useful generators at many places like wind turbines and power plants of mini hydro.
These are also very useful in decreasing the high-pressure steam to a low-pressure gas stream since simple controls of these generators can recover energy. Leading voltage is needed to operate the induction generator. By connecting to an electrical grid, this problem can be sorted out. These generators can also be self-excited by the capacitors that are phase correcting type.
This machine is useful in generating a very high voltage and it was designed and developed between 1880 to 1883 by an inventor from British named James Wimshurst. It has two very large contra-rotating discs which give it a separate appearance. These discs are placed on a vertical plane, metallic brushes divided crossbars, and two metal spheres formed a spark gap.
Van de Graaff generator
It is a kind of electrostatic generator that uses the technology of a moving belt for collecting very high voltage on a globe made up of hollow metal. An American scientist Robert J. Van de Graaff invented it in 1929. The potential can reach 5 megavolts in these Graff generators. The importance of technology is very high when it comes to offering us efficient electricity sources like these generators.