Electrical Revolution

Compare Lap Winding and Wave Winding In this post, comparison between lap winding and wave winding is given on the basis of parallel path,...

  When the mechanical input power is given to the DC Generator , some emf and therefore current would be generated due to residual magneti...

The rate of change of current during commutation period is from + Ia to – Ia.  We have taken it + 25 Amp to – 25 Amp. The rapid reversal of ...

The power stages of DC Generator is shown in the Figure

The most important characteristics of DC generators are given below. Magnetizing or open circuit characteristics ( O.C.C ) ( E o   –   I...

The function of the commutator is to make alternating current into unidirectional.  The direction of armature conductors are in one di...

The various losses occurring in DC machines can be given as follows. Iron loss (Magnetic or Core Loss) : Hysteresis Loss and Eddy Current...

The flux which is produced by field winding is called as main flux or field flux.  The armature conductors produce armature flux.  The...

The DC Generators are classified according to the way their field windings are connected and excited. (A) Separately excited Generator (B) ...

All the Conductors lay in any parallel path under one pair of poles in the Lap winding.  If the flux from all the poles is exactly sam...

The wave winding is possible only with particular number of conductor or coils. But sometimes the armature slots available in the armat...

Let P = Numbers of poles      Ф = Flux / pole in weber       Z = Total numbers of armature conductors          = Numbers of slots...

The following are main parts of DC machine. Figure A shows the construction of the 2 – Pole DC machine.  Yoke or Frame  Pole cores and pol...

There are basic following elements of an electrical generator Stationary part Field system which produce magnetic field Rotati...

Principle of DC Generator It is an electrical machine which converts mechanical energy into electrical energy.  The principle of operatio...