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A 
SEMINAR ON 
“SYNCHRONOUS GENERATOR (ALTERNATOR) 
BACHELOR OF TECHNOLOGY 
IN 
ELECTRICAL & ELECTRONICS ENGINEERING SUBMI...
SYNCHRONOUS GENERATOR 
(ALTERNATOR) 
Contents:- 
 Introduction 
What is the Alternators 
Single Phase Alternator 
Thre...
INTRODUCTION:- 
Alternating current generating system were know in simple 
form discovery of the magnetic induction of ele...
WHAT IS THE ALTERNATOR:- 
• Synchronous generator or basically case machine and 
or usually called alternators rotating ma...
SINGLE PHASE ALTERNATOR:- 
• The two poles of the stator winding are connected to each other so 
that the AC voltage are i...
THREE PHASE ALTERNATOR-A 
three phase stator can also be connected so that the phase form a 
delta connection. 
In the del...
ADVANTAGES OF ALTERNATOR- 
• Most alternator have the rotating field and the 
stationary armature. 
• This generated volta...
SYNCHRONOUS SPEED- 
• The output frequency of an alternator depends on the number of 
poles & the rotational speed. 
P 
f ...
TYPES OF CONSTRUCTION-There 
of two types of construction. 
(1) Stator Construction 
(2) Rotor Construction two type 
1. S...
USE OF ALTERNATOR- 
• Large Synchronous generators are used to generate 
bulk power at thermal hydro & nuclear power stati...
Specification of alternator- 
• Normally alternator rating depends on load power 
factor which is normally lagging for ind...
Synchronous generator  by pankaj chaudhary
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Synchronous generator by pankaj chaudhary

  1. 1. A SEMINAR ON “SYNCHRONOUS GENERATOR (ALTERNATOR) BACHELOR OF TECHNOLOGY IN ELECTRICAL & ELECTRONICS ENGINEERING SUBMITTED BY PANKAJ CHAUDHARY R.N.-24823 UNDER THE SUPERVISIONOF ARUNESH DUTT (H.O.D) DEPARTMENTOF ELECTRICAL & ELECFTRONICS ENGINEERING SANJAY GANDHI INSTITUTEOF ENGINEERING & TECHNOLOGY NEHRU GRAM BHARTI UNIVERSITY, ALLAHABAD
  2. 2. SYNCHRONOUS GENERATOR (ALTERNATOR) Contents:-  Introduction What is the Alternators Single Phase Alternator Three phase Alternator Advantages of Alternator Synchronous Speed Types of Construction Use of Alternator Specification of Alternator
  3. 3. INTRODUCTION:- Alternating current generating system were know in simple form discovery of the magnetic induction of electric current.
  4. 4. WHAT IS THE ALTERNATOR:- • Synchronous generator or basically case machine and or usually called alternators rotating machine. • A Alternator is a machine for converting mechanical power from a rime mover to A.C. electric power at a specific voltage and frequency.
  5. 5. SINGLE PHASE ALTERNATOR:- • The two poles of the stator winding are connected to each other so that the AC voltage are in phase so, they add as the rotor turnes it’s poles will induce AC voltage in the stator (armature) winding.
  6. 6. THREE PHASE ALTERNATOR-A three phase stator can also be connected so that the phase form a delta connection. In the delta connection the line voltage are equal to the phase voltage but the line c/n will be equal to the vector sum of the phase c/n. 1 2 0 O 1 2 0 O 1 2 0 O V A V B V C A B C V O LT A G E
  7. 7. ADVANTAGES OF ALTERNATOR- • Most alternator have the rotating field and the stationary armature. • This generated voltage may be high as 33 kv. • The armature windings being station ary are not subjected do vibration & centrifugal forces. • The armature of large alternators are forced with circulating gas or liquids.
  8. 8. SYNCHRONOUS SPEED- • The output frequency of an alternator depends on the number of poles & the rotational speed. P f Ns =120 Where Ns = synchronous Speed F = Frequency P = No . ofPolse
  9. 9. TYPES OF CONSTRUCTION-There of two types of construction. (1) Stator Construction (2) Rotor Construction two type 1. Salent Pole Rotor 2. Cylindrical rotor
  10. 10. USE OF ALTERNATOR- • Large Synchronous generators are used to generate bulk power at thermal hydro & nuclear power station. • Commonly used synchronous generator as rating of 500 MVA. Used in supper power thermal power stations.
  11. 11. Specification of alternator- • Normally alternator rating depends on load power factor which is normally lagging for inductive loads.
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SYNCHRONOUS GENERATOR pankajchaudhary582@gmail.com

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