Applications of DC Machines

APPLICATIONS OF DC MACHINES

The use of electrical energy increases day by day. And because of that, the use of Tots electrical machines is also increasing.

Generally, the DC machines are used in supplying excitation of an alternator and it is also used in many applications like welding process, variable-speed motor drives and electrolytic and electroplating process.

Small DC machines are used as a control device such as speed sensing, positioning, and tracking.

Application of DC Machine as a Motor

The DC motors are divided into three types; Series motor, Shunt motor, and Compound motor.

Series Motor

The series motors are used in the application where high starting torque is necessary and speed variation is possible.

Example: Vacuum cleaner, Air Compressor, Cranes, Traction system, etc.

Shunt Motor

The shunt motor is used in the application where starting torque is not needed more and running on the constant speed.

Example: conveyer, Lift, Fans, Lath: machine, Spinning machine, centrifugal pump, etc.

Compound Motor

The compound motors are used in applications where higher starting with constant speed is required.

Example: Rolling mills, Elevators, Conveyer, Presses, etc.

Application of DC Machine as Generator

The DC generators are classified as Separately excited DC generator, Shunt-wound, and Series-Wound generator.

Separately excited DC Generator

This type of DC generator is used for testing in laboratories. Because it has a wide range of voltage input. It is also used as a supply to DC motor.

Shunt-wound Generator

This type of generator used to charge a battery and provide excitation to the alternator. This type of generator also used for lighting purposes.

Series-wound Generator

Series-wound generators are used in locomotive for providing field excitation current as well as for regenerative braking. In a distribution power system, it is used as a booster.