Electrical Machines: Unit II: D.C. Generators

Symbolic Representation of D.C. Generator

Home | Department: EEE Department | Subject: Electrical Machines I |

Key Point: Every practical generator needs a prime mover to rotate its armature. Hence to avoid complexity of the diagram, prime mover need not be included in the symbolic representation of generator.

Symbolic Representation of D.C. Generator

• The armature is denoted by a circle with two brushes. Mechanically it is connected to another device called prime mover. The two ends of armature are denoted as A₁ - A₂. The field winding is shown near armature and the two ends are denoted as F₁ - F₂. The representation of field vary little bit, depending on the type of generator.

• The symbolic representation is shown in the Fig. 3.15.1. Many times an arrow (↑) is indicated near armature. This arrow denotes the direction of current which induced e.m.f. will set up, when connected to an external load.

Key Point: Every practical generator needs a prime mover to rotate its armature. Hence to avoid complexity of the diagram, prime mover need not be included in the symbolic representation of generator.

Electrical Machines: Unit II: D.C. Generators : Tag: : - Symbolic Representation of D.C. Generator

Home | Department: EEE Department | Subject: Electrical Machines I |

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Electrical Machines: Unit II: D.C. Generators

D.C. Generators

Introduction - D.C. Generators

Principle of Operation of a D.C. Generator

Constructional Features of a D.C. Machine

Types of Armature Winding - DC Generators

Winding Pitches - DC Generators

E.M.F. Equation of D.C. Generator - with Solved Example Problems

Introduction to Armature Reaction - DC Generators

Concept of Armature Reaction - D.C. Generators

Demagnetising and Cross Magnetising Conductors - DC Generators

Effects of Armature Reaction - DC Generators

Reduction of Effects of Armature Reaction - DC Generators

Action of Commutator - DC Generators

Practical Commutation - DC Generators

Methods of Improving Commutation - DC Generators

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