DC generator and DC motor are similar from the mechanical perspective, however from a technical standpoint both differ from each other significantly. The most significant difference between DC motor and DC generator lies in the conversion mechanism. DC motor converts electrical energy into mechanical energy whereas DC generator converts mechanical energy into electrical energy. Theoretically, a DC generator can be used as a DC motor without any constructional changes and vice versa is also possible. Thus, a DC generator or a DC motor can be broadly termed as a DC machine. There are several types of mechanical energy sources available such as hand cranks, internal combustion engines, water turbines, gas and steam turbines. The generator provides power to all the electrical power grids. The working principle of the DC generator is based on Faraday’s laws of electromagnetic induction. Stator, rotor, armature windings, yoke, poles, pole shoe, commutator and brushes are the essential parts of both DC generator and DC motor.

Priya R Nair

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