A Presentationon Turbo Generator & Exciter BHEL Haridwar SUBMITTEDBY- PRAKHARMEHROTRA SIDDHARTH RAJ SUBMITTED TO – PROF. O.P. ARORA (HOD) PROF. RKMATHUR Duration: 01 June,2013 to 28 June, 2013 DEPTT. OF MECHANICAL ENGG. BHAGWANT UNIVERSITY
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A Presentationon
Turbo Generator & ExciterBHEL Haridwar
SUBMITTEDBY-
PRAKHARMEHROTRA
SIDDHARTH RAJ
SUBMITTED TO –
PROF. O.P. ARORA (HOD)
PROF. RKMATHUR
Duration: 01 June,2013 to 28 June, 2013
DEPTT. OF MECHANICAL ENGG.
BHAGWANT UNIVERSITY
About BHEL BHEL was established in 1960’s in Bhopal underIndo-Sovietagreement.
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 India
1. Bhopal
2. Bangalore
3. Haridwar
4. Goindwal
5. Jagdishpur
6. Jhansi
7. Hyderabad
8. Tiruchy
9. Ranipet
Units in BHELHaridwar
BHELHaridwar
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 ofELECTROMAGNETICINDUCTION.
• 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 generatorrotor is filled with hydrogen gas which is used to prevent the coil from decaying.
Nomenclature of Turbo-generatorTARI 108/46
THRI 108/44
THDF 115/59
Types of GeneratorTARI –Air Cooled Turbo GeneratorStator Winding – Indirectly Air CooledRotor 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:
Brushtype exciter / Static excitation
Brushless 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
AdvantageOf 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