introduction about electrical machines

*elecreical machines can be devided into:

-generetors-which convert mechanical energy into electrical energy

-motors- which convert electrical energy into mechanical energy.

*Both types operates through the interaction between a magnetic field and a set of windings

Classification of Electrical Machines

DC Generators and Motors(DC Machines):

A more efficient approach is to replace the two slip rings with a single split slip ring called a commutator.

-This is arranged so that connections to the coil are reversed as the voltage from the coil changes polarity.

-Hence the voltage across the brushes is of a single polarity.

-Adding additional coils produces a more constant output.

Basic arrangement of dc machine:

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