Applications of Shunt Field DC Generators Applications of Series Field DC Generators Application of Compound DC Generators Applications of Shunt Field DC Generators The terminal voltage of the shunt field generator is almost constant or … Read more
We require methods of improving commutation in dc machines. Perfect commutation requires complete current reversal within the commutation period. But generally due to the reactance of the armature winding quick current reversal is not possible … Read more
Definition DC Generator DC generator is a moving type machine which converts mechanical energy into DC electrical energy. Whenever a conductor moves in a magnetic field there is an induced EMF across the conductor according … Read more
The working principle of a dc generator depends on the phenomenon, “when an electrical conductor moves in a magnetic field then the field induces an emf across the conductor.” Hence it is essential to have … Read more
A DC generator has the following essential parts. Magnetic Frame or Yoke Pole Cores and Pole shoes Field Coils Armature Core Armature Windings Commutator Carbon Brushes Magnetic Frame or Yoke The outer cover frame of … Read more
Before going to the actual discussion, we need to know some related terms of the armature winding. Pole Pitch It is the distance on the armature periphery between two adjacent poles. We usually measure it … Read more
A DC Generator is an electromechanical machine. Therefore, it must have electrical as well as mechanical losses. We will discuss in this article the various losses in DC Generator. Core Losses or Iron Losses It … Read more
To illustrate the armature reaction, let us consider a two pole dc machine. The armature of the machine rotates clockwise. Hence, as per Fleming’s rule, at any instant, the current in the conductors in front … Read more
The current in the armature winding of a DC machine is always alternating. In the case of DC generator, this current is to be rectified in the output circuit. For the purpose of this rectification, … Read more
We use Compensating Winding in larger rated DC generator and motor. In large DC machines like motors of rolling mills, turbo generators etc. there may be a large fluctuation of the load. The fluctuation of … Read more