Electrical machine

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Electrical machine is a device that convert either mechanical energy to electrical energy or vice versa, and change AC voltage from one level to another level.

Electrical machines are divided into three parts:

Generator

Generator is the device that converts mechanical energy at its prime mover to produce constant electrical energy at its output. Generator is classified into two types: AC generator and DC generator.

AC Generator

AC generator is the generator that converts mechanical energy at its prime mover into AC electricity.

AC generator is classified into several types:

DC Generator

DC generator is the generator that converts mechanical energy at its prime mover into DC electricity.

DC generator is classified into several types:

Motor

Motor is the device that converts electrical energy at its input to produce mechanical energy. Motor is classified into two types: AC motor and DC motor.

AC Motor

AC motor is the motor that converts AC electrical energy at its input into mechanical energy.

AC motor is classified into several types:

DC Motor

DC motor is the motor that converts DC electricity into mechanical energy. Its main components are stator, rotor, windings (field windings and armature windings) and commutator.

DC motor is classified into five types:

Losses in DC motor are brush drop losses, core losses, mechanical losses and stray losses.

Transformer

Transformer is the device that converts AC voltage from one level to another level higher or lower, or even to the same level.

References

Chapman, Stephen J. 2005. Electrical Machinery Fundamentals. 4th Ed. New York: McGraw Hill.


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