DC generators are rarely used. There are various applications of dc generators that are given below:
Separately excited generators
Separately excited generator are required, separate supply to excite its field. Due to this, the use is restricted to some special applications such as electroplating, electrorefining of materials, etc.
DC shunt generators
These generators are commonly used in battery charging and ordinary lighting purposes.
DC series generators
These are commonly used as boosters on DC feeders, as a constant current generators for welding generators and arc lamps.
Cumulatively compound generators
These are used for domestic lightning purposes and to transmit energy over long distances.
Differential compound generators
The use of differential compound generators is very rare and it is used for special applications like electric arc welding.