This document summarizes a presentation given by Prakhar Mehrotra and Siddharth Raj at BHEL Haridwar from June 1-28, 2013. It provides an overview of BHEL, the largest engineering and manufacturing company in India, and its various locations. It then describes the main units at BHEL Haridwar, including turbo generators and exciters. It proceeds to explain the basic workings of a turbo generator, its main components like the stator and rotor, and different types of generators. The document concludes with descriptions of excitation systems, including brush and brushless exciters, and the advantages of brushless excitation.

1. A PRESENTATION ON
TURBO GENERATOR & EXCITER
BHEL HARIDWAR
Duration: 01 June,2013 to 28 June, 2013
SUBMITTED TO –
PROF. O.P. ARORA (HOD)
PROF. RK MATHUR
SUBMITTED BYPRAKHAR MEHROTRA
SIDDHARTH RAJ
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.
2.
3.
4.
5.
6.
7.
8.
9.
Bhopal
Bangalore
Haridwar
Goindwal
Jagdishpur
Jhansi
Hyderabad
Tiruchy
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
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•
•
•
•
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
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THRI – Hydrogen Cooled Turbo Generator
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Stator Winding – Indirectly Air Cooled
Rotor Winding/Stator Core – Directly Hydrogen Cooled
THDF – Hydrogen/ Water Cooled Turbo Generator
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
Stator Winding – Directly Water Cooled
Rotor Winding/Stator Core - Directly Hydrogen Cooled

9. MAIN PARTS OF TURBO GENERATOR
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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 winding
Stator Frame

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