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A PRESENTATION ONTURBO GENERATOR & EXCITER
BHEL HARIDWAR
SUBMITTED BY-
PRAKHAR MEHROTRA
SIDDHARTH RAJ
SUBMITTED TO –PROF. O.P. ARORA (HOD)PROF. RK MATHUR
Duration: 01 June,2013 to 28 June, 2013
DEPTT. OF MECHANICAL ENGG.BHAGWANT UNIVERSITY
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.
BHEL IN INDIA1. Bhopal 2. Bangalore 3. Haridwar 4. Goindwal5. Jagdishpur6. Jhansi7. Hyderabad8. Tiruchy9. Ranipet
UNITS IN BHEL HARIDWAR
BHEL Haridwa
r
HEEP CFFP Defence PCRI
MAIN PRODUCTS Turbo Generator Generator exciters Motors (AC & DC) Steam turbines Hydro turbines Gas turbines
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.
NOMENCLATURE OF TURBO-GENERATORTARI 108/46THRI 108/44THDF 115/59
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
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
Stator Frame
Stator winding
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
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.
BRUSH LESS EXCITATION SYSTEM PERMANENT MAGNETIC PILOT EXCITER THREE PHASE MAIN EXCITER
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
THANK YOU