1. Presented by, KAVYASHREE. S
DC GENERATOR
Presented by,
KAVYASHREE. S

2. INDEX INTRODUCTION TO DC GENERATOR. WORKING PRINCIPLE OF DC GENERATOR.
PARTS OF DC GENERATOR.
CLASSIFICATION OF DC GENERATOR.
APPLICATION OF DC GENERATOR.
CONSTRUCTION OF DC GENERATOR.

3. INTRODUCTION TO DC GENERATOR
An dc generator is a machine which converts mechanical energy or power into electrical energy.

4. WORKING PRINCIPLE
It is based on the principle of production of dynamically induced e.m.f. (electro motive force). Whenever a conductor cuts magnetic flux, dynamically induced e.m.f is prodused in it according to Faraday’s Laws of Electro magnatic Induction. This emf causes a current to flow if the conductor circuit is closed.

5. Construction

6. CONSTRUCTION
A single turn rectangular copper coil abcd moving about its own axis in a magnetic field provided by either permanent magnets or electro magnets. The two ends of the coil are joined to two split rings which are insulated from each other and from the central shaft.Two collecting brushes press against the slip rings.

7. PARTS OF DC GENERATOR Magnetic frame or yoke Pole core and pole shoes
Pole coils and field coils
Armature winding
Commutator
Brushes and bearings
Shaft

8. CLASSIFICATION OF DC GENERATOR
SEPERATELY EXCITED
SELF EXCITED
SHUNT WOUND
SERIES WOUND
COMPOUND WOUND
LONG SHUNT
SHORT SHUNT DC GENERATORS

9. Application of separately excited generator
Used as Electroplating and as booster.
Used with field regulators
Used as power suppliers on big turbo alternator
Used as exciters
APPLICATION OF SHUNT GENERATOR
Used for battery charging

10. APPLICATION OF SERIES GENERATOR
Used for lightening
Used as constant current generators
Used as booster
APPLICATION OF COMPOUND GENERATOR
Used as compensator
Used for ordinary lightning and power purposes

11. THANK YOU