Series Wound Generator
A series-wound generator the field coils are connected in series with the armature winding. The series field winding carries the armature current. The series field winding consists of a few turns of wire of thick wire of larger cross-sectional area and having low resistance usually of the order of less than 1 ohm because the armature current has a very large value.
Its convectional diagram is shown below.
Series Wound DC Generator
Series field current is given as
Rse is known as the series field winding resistance.
Terminal voltage is given as
If the brush contact drop is included, the terminal voltage equation is written as
The flux developed by the series field winding is directly proportional to the current flowing through it. But it is only true before magnetic saturation after the saturation flux becomes constant even if the current flowing through it is increased.
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