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1. A PRESENTATION ON
TURBO GENERATOR & EXCITER
BHEL HARIDWAR
Duration: 01 June,2013 to 28 June, 2013
SUBMITTED BY-PRAKHAR
MEHROTRA
SIDDHARTH RAJ
SUBMITTED TO –
PROF. O.P. ARORA (HOD)
PROF. RK MATHUR
DEPTT. OF MECHANICAL ENGG.
BHAGWANT UNIVERSITY

2. ABOUT BHEL
 BHEL was established in 1960’s in Bhopal under
Indo-Soviet agreement.
 Largest engineering and manufacturing enterprise
in India.
 Got 'Maharatna' status on 1 Feb,2013.
 BHEL has a share of 59% in India’s total installed
generating capacity of power.
 BHEL filed 351 patents and copyrights with various
organization.

3. BHEL IN INDIA
1. Bhopal
2. Bangalore
3. Haridwar
4. Goindwal
5. Jagdishpur
6. Jhansi
7. Hyderabad
8. Tiruchy
9. Ranipet

4. UNITS IN BHEL HARIDWAR
BHEL
Haridwar
HEEP CFFP Defence PCRI

5. MAIN PRODUCTS
 Turbo Generator
 Generator exciters
 Motors (AC & DC)
 Steam turbines
 Hydro turbines
 Gas turbines

6. TURBO-GENERATOR
• Turbo generator operates on the fundamental principles
of ELECTROMAGNETIC INDUCTION.
• It converts mechanical energy into electrical energy.
• It is a turbine directly connected to electric generator for
the generation of electricity.
• Mechanical motion is generated in turbine by using
heat.
• Turbo generator rotor is filled with hydrogen gas which
is used to prevent the coil from decaying.

7. NOMENCLATURE OF TURBO-GENERATOR
TARI 108/46
THRI 108/44
THDF 115/59

8. TYPES OF GENERATOR
TARI – Air Cooled Turbo Generator
 Stator Winding – Indirectly Air Cooled
 Rotor Winding/Stator Core – Directly Air Cooled
THRI – Hydrogen Cooled Turbo Generator
 Stator Winding – Indirectly Air Cooled
 Rotor Winding/Stator Core – Directly Hydrogen Cooled
THDF – Hydrogen/ Water Cooled Turbo Generator
 Stator Winding – Directly Water Cooled
 Rotor Winding/Stator Core - Directly Hydrogen Cooled

9. MAIN PARTS OF TURBO GENERATOR
 Stator - Stator Frame (Fabrication & Machining)
 Core Assembly - Stator Core, Core Suspension Arrangement
 End Shields
 Stator Winding Assembly - Stator Winding, Winding
Assembly, Connecting Bus bar
 Rotor - Rotor Shaft, Rotor Wedges, Rotor Coils, Wound
Rotor, Rotor Assembly
 Completing Assembly - Bearing Assembly, Shaft Seal
Assembly, Oil Catchers, Insert Cover etc
 Exciter
 Auxiliary System

10. Stator Frame
Stator winding

11. EXCITATION SYSTEM
• The process of generating a magnetic field by
means of an electric current is called excitation.
• It provides power to the field windings thus produce
field for rotor.
Types of exciter:
 Brush type exciter / Static excitation
 Brush less exciter

12. BRUSH TYPE/STATIC EXCITATION
 Rotor Field Winding is connected to Slip ring
mounted on Rotor.
 Excitation is provided by current transfer by contact
through Carbon Brushes, Slip ring and field lead.

13. BRUSH LESS EXCITATION
SYSTEM
 PERMANENT MAGNETIC PILOT EXCITER
 THREE PHASE MAIN EXCITER

14. ADVANTAGE OF BRUSH LESS EXCITER
OVER BRUSH TYPE EXCITER
 Eliminates Slip Rings, Brush gear and Field Breaker
 Eliminates all problems associated with transfer of
current via sliding contacts
 Eliminates the Hazard of changing Brushes on Load
 Brush Losses are eliminated

15. THANK YOU