SlideShare ist ein Scribd-Unternehmen logo
1 von 22
Downloaden Sie, um offline zu lesen
ELECTRICAL DC MACHINES
RAGHU ENGINEERING COLLEGE
1
PRESENTED BY
P.SANJAY KUMAR
INDEX
S.r no Topic Name
1 INTRODUCTION
2 PRINCIPLE OF OPERATION
3 CONSTRUCTION
4 WORKING
5 CLASSIFICATION
6 APPLICATIONS
2
INTRODUCTION
• The Device which Converts the Mechanical Energy into
Electrical Energy is called Generator.
• There are Two types of Generators
1. D.C Generator:- The Generator which converts the
Mechanical Energy into D.C Form of Electrical Energy is called
D.C Generator.
2. A.C Generator:- The Generator which converts the
Mechanical Energy into A.C Form of Electrical Energy is called
A.C Generator.
• Both of the Generator Works on the Principle of Faraday’s
Law of Electromagnetic Induction.
3
PRINCIPLE OF OPERATION
• In 1831, Michael Faraday, an English physicist gave
one of the most basic laws of electromagnetism
called Faraday's law of electromagnetic induction.
4
CONSTRUCTION
• Important Parts of D.C Generator
1. YOKE
2. POLES
3. FIELD WINDING
4. ARMATURE
5. COMMUTATOR,BRUSHES and GEAR
6. BEARINGS5
YOKE
• Yoke is also called as frame. It provides
protection to the rotating and other
parts of the machine from moisture, dust
etc.
• Yoke is an iron body which provides the
path for flux
• It provides the mechanical support for
the poles.
• Materials used for yoke are cast iron,
silicon steel, cast steel, rolled steel etc.
6
POLE
• Pole produce the magnetic flux when the field
winding is excited.
• Materials used for Pole is cast steel or cast iron.
• Pole is a Part on Which Field
Winding is Wound Over.
7
FIELD WINDING
• The field winding is also called as exciting winding.
• Current is passed through the field
winding in a specific direction ,to magnetize the pole.
• The metal is used for the field
conductor is copper.
8
ARMATURE CORE
• All these slots are parallel to the
shaft axis.
•Armature conductor are placed in
these slots.
•Armature core provides a low
reluctance path to the flux produced
by the field winding.
•Cast steel or cast iron are used for
the armature core.
9
COMMUTATOR
• The commutator converts the alternating emf generated
internally in a D.C. voltage .
• It collects the current from
the armature conductors
and passes it to the external
load via brush.
10
ROTOR
• The Rotor is the moving part of a
D.C. generator.
• The rotor rotates because the
wires and magnetic field of the
motor are arranged so that a
torque is developed about the
rotor’s axis.
11
WORKING of DC GENERATOR
12
• The Dc Generator Converts Mechanical Energy into Electrical
Energy.
• In this DC Generator the Single Turn Alternator is used.
• The Coil can Rotate in Clockwise or Anticlockwise
Direction.
• The Commutator Brush is Connected to the Coil.
• Commutator is Divided into Two Parts A and B.
• The Coil is Suspended between the Field Poles.
• The Coil is Given the Mechanical Energy which Results in
the Rotation of it.
• As the Commutator Segments A&B is Connected with
Conducting Coil ab and cd Respectively they Rotate
Together.
• Due to Which the Flux is Produced Resulting in the
Generation of Electric Current.
13
• As the Commutator has the Property of Converting
the Bidirectional Emf(AC) into Unidirectional Emf
(DC) .
• The DC Current is Generated by the DC Generator.
• Which can Directly Used by Connecting the Output
across the Load or it Can be stored inatteries and Can
be used Later on.
14
Derivation for Induced EMF of One Armature
Conductor
For one revolution of the conductor,Let,
Φ = Flux produced by each pole in weber
(Wb)
P = number of poles in the DC generator.
therefore,
Total flux produced by all the poles
Time taken to complete one revolution
15
Now, according to Faraday’s law of induction, the induced emf of
the armature conductor is denoted by “e” which is equal to rate of
cutting the flux.
DERIVATION FOR INDUCED EMF FOR DC GENERATOR
Induced emf of DC generator
E = emf of one conductor × number of conductor connected
in series.
Induced emf of DC generator is
16
Simple wave wound generator
Numbers of parallel paths are only 2 = A
Induced emf for wave type of winding generator
is
Here, number of parallel paths is equal to number of conductors in one
path
P = A
Induced emf for lap-wound generator is
17
18
CLASSIFICATION
19
APPLICATIONS
• Shunt generator:
Lighting loads
Battery charging
• Series generator:
For the arc lamps
As constant current generator
As boosters on D.C. generator
20
• Separately Exicted generator:
The application of these generator have limitations , because
they need a separate excitation for the field winding.
Some of the application are electro-refining of materials or
electroplating
• Cumulative compound generator:
Used for domestic lighting
For energy transmission over a long distance.
• Differential compound generator:
• Its important application is electric arc welding
21
22

Más contenido relacionado

Was ist angesagt?

Single phase transformers
Single phase transformersSingle phase transformers
Single phase transformersEkeeda
 
Three phase-circuits
Three phase-circuitsThree phase-circuits
Three phase-circuitsrsamurti
 
Power electronics Phase Controlled Rectifiers - SCR
Power electronics   Phase Controlled Rectifiers - SCRPower electronics   Phase Controlled Rectifiers - SCR
Power electronics Phase Controlled Rectifiers - SCRBurdwan University
 
Electrical instruments ppt
Electrical instruments pptElectrical instruments ppt
Electrical instruments pptAmey Waghmare
 
single phase energy meter.pptx
single phase energy meter.pptxsingle phase energy meter.pptx
single phase energy meter.pptxtadi1padma
 
Electrodynamometer type instrument.pptx
Electrodynamometer type instrument.pptxElectrodynamometer type instrument.pptx
Electrodynamometer type instrument.pptxChandraPrakash715640
 
Half wave control rectifier with RL load
Half wave control rectifier with RL loadHalf wave control rectifier with RL load
Half wave control rectifier with RL loadSmit Shah
 
Electrical Machines - II
Electrical Machines - IIElectrical Machines - II
Electrical Machines - IIkarthi1017
 
Unit 03 Construction & Operation of Watt meter & Energy meter
Unit   03 Construction & Operation of Watt meter & Energy meterUnit   03 Construction & Operation of Watt meter & Energy meter
Unit 03 Construction & Operation of Watt meter & Energy meterPremanandDesai
 
Ppt of current transformer
Ppt of current transformerPpt of current transformer
Ppt of current transformerROOPAL PANCHOLI
 
electrical machines
electrical machineselectrical machines
electrical machinesmahesh babu
 

Was ist angesagt? (20)

Pmmc instrument
Pmmc instrumentPmmc instrument
Pmmc instrument
 
Single phase transformers
Single phase transformersSingle phase transformers
Single phase transformers
 
Inverter
InverterInverter
Inverter
 
Three phase-circuits
Three phase-circuitsThree phase-circuits
Three phase-circuits
 
Power electronics Phase Controlled Rectifiers - SCR
Power electronics   Phase Controlled Rectifiers - SCRPower electronics   Phase Controlled Rectifiers - SCR
Power electronics Phase Controlled Rectifiers - SCR
 
DC GENERATORS
DC GENERATORS DC GENERATORS
DC GENERATORS
 
Electrical instruments ppt
Electrical instruments pptElectrical instruments ppt
Electrical instruments ppt
 
Armature reaction
Armature reactionArmature reaction
Armature reaction
 
single phase energy meter.pptx
single phase energy meter.pptxsingle phase energy meter.pptx
single phase energy meter.pptx
 
Electrical machines lecture notes
Electrical machines lecture notesElectrical machines lecture notes
Electrical machines lecture notes
 
Transformer
TransformerTransformer
Transformer
 
Electrodynamometer type instrument.pptx
Electrodynamometer type instrument.pptxElectrodynamometer type instrument.pptx
Electrodynamometer type instrument.pptx
 
Half wave control rectifier with RL load
Half wave control rectifier with RL loadHalf wave control rectifier with RL load
Half wave control rectifier with RL load
 
Transformer basics
Transformer   basicsTransformer   basics
Transformer basics
 
Electrical Machines - II
Electrical Machines - IIElectrical Machines - II
Electrical Machines - II
 
Unit 03 Construction & Operation of Watt meter & Energy meter
Unit   03 Construction & Operation of Watt meter & Energy meterUnit   03 Construction & Operation of Watt meter & Energy meter
Unit 03 Construction & Operation of Watt meter & Energy meter
 
Ppt of current transformer
Ppt of current transformerPpt of current transformer
Ppt of current transformer
 
Transformer
TransformerTransformer
Transformer
 
electrical machines
electrical machineselectrical machines
electrical machines
 
Current Transformer
Current TransformerCurrent Transformer
Current Transformer
 

Ähnlich wie Electrical dc machines

TOPIC 5- D.C. GENERATORS.pptx
TOPIC 5- D.C. GENERATORS.pptxTOPIC 5- D.C. GENERATORS.pptx
TOPIC 5- D.C. GENERATORS.pptxMartMantilla1
 
INDUCTION MOTOR
INDUCTION MOTORINDUCTION MOTOR
INDUCTION MOTORstudent
 
Slides of DC Machines with detailed explanation
Slides of DC Machines with detailed explanationSlides of DC Machines with detailed explanation
Slides of DC Machines with detailed explanationOmer292805
 
DC machines-Motors and Generators Principles
DC machines-Motors and Generators  PrinciplesDC machines-Motors and Generators  Principles
DC machines-Motors and Generators PrinciplesKinotiMugiiraNtunda
 
dc generator ece
dc generator ecedc generator ece
dc generator ecestudent
 
El.engg.theory notes 1 book
El.engg.theory notes 1 bookEl.engg.theory notes 1 book
El.engg.theory notes 1 bookRamesh Meti
 
Electrical Machines.pdf
Electrical Machines.pdfElectrical Machines.pdf
Electrical Machines.pdfDarrienXavier
 
dc-generators-unit-1.ppt
dc-generators-unit-1.pptdc-generators-unit-1.ppt
dc-generators-unit-1.pptQwer401863
 
Unit 3- DC Machines.pdf
Unit 3- DC Machines.pdfUnit 3- DC Machines.pdf
Unit 3- DC Machines.pdfdeepaMS4
 

Ähnlich wie Electrical dc machines (20)

TOPIC 5- D.C. GENERATORS.pptx
TOPIC 5- D.C. GENERATORS.pptxTOPIC 5- D.C. GENERATORS.pptx
TOPIC 5- D.C. GENERATORS.pptx
 
DC GENERATOR
DC GENERATORDC GENERATOR
DC GENERATOR
 
EM-I Unit-I (1).ppt
EM-I Unit-I (1).pptEM-I Unit-I (1).ppt
EM-I Unit-I (1).ppt
 
DC Generator.ppt
DC Generator.pptDC Generator.ppt
DC Generator.ppt
 
Unit ii
Unit iiUnit ii
Unit ii
 
INDUCTION MOTOR
INDUCTION MOTORINDUCTION MOTOR
INDUCTION MOTOR
 
Slides of DC Machines with detailed explanation
Slides of DC Machines with detailed explanationSlides of DC Machines with detailed explanation
Slides of DC Machines with detailed explanation
 
BEEE machines
BEEE machinesBEEE machines
BEEE machines
 
DC machines PPT.pptx
DC machines PPT.pptxDC machines PPT.pptx
DC machines PPT.pptx
 
DC machines-Motors and Generators Principles
DC machines-Motors and Generators  PrinciplesDC machines-Motors and Generators  Principles
DC machines-Motors and Generators Principles
 
transformer.ppt
transformer.ppttransformer.ppt
transformer.ppt
 
DC generator.pptx
DC generator.pptxDC generator.pptx
DC generator.pptx
 
dc generator ece
dc generator ecedc generator ece
dc generator ece
 
El.engg.theory notes 1 book
El.engg.theory notes 1 bookEl.engg.theory notes 1 book
El.engg.theory notes 1 book
 
Electrical Machines.pdf
Electrical Machines.pdfElectrical Machines.pdf
Electrical Machines.pdf
 
Dc generator
Dc generatorDc generator
Dc generator
 
DC GENERATOR
DC GENERATORDC GENERATOR
DC GENERATOR
 
AAAAAA.pdf
AAAAAA.pdfAAAAAA.pdf
AAAAAA.pdf
 
dc-generators-unit-1.ppt
dc-generators-unit-1.pptdc-generators-unit-1.ppt
dc-generators-unit-1.ppt
 
Unit 3- DC Machines.pdf
Unit 3- DC Machines.pdfUnit 3- DC Machines.pdf
Unit 3- DC Machines.pdf
 

Mehr von sanjay kumar pediredla

TIME RESPONSE OF SECOND ORDER SYSTEM USING MATLAB
TIME RESPONSE OF SECOND ORDER SYSTEM USING MATLABTIME RESPONSE OF SECOND ORDER SYSTEM USING MATLAB
TIME RESPONSE OF SECOND ORDER SYSTEM USING MATLABsanjay kumar pediredla
 
MODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINK
MODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINKMODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINK
MODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINKsanjay kumar pediredla
 
THIS PPT ON ELECTRONIC FUEL INJECTION SYSTEM
THIS PPT ON ELECTRONIC FUEL INJECTION SYSTEMTHIS PPT ON ELECTRONIC FUEL INJECTION SYSTEM
THIS PPT ON ELECTRONIC FUEL INJECTION SYSTEMsanjay kumar pediredla
 
GREEN ENERGY ELECTRICAL POWER CONVERTER GREEN ENERGY ELE...
GREEN ENERGY ELECTRICAL POWER CONVERTER                      GREEN ENERGY ELE...GREEN ENERGY ELECTRICAL POWER CONVERTER                      GREEN ENERGY ELE...
GREEN ENERGY ELECTRICAL POWER CONVERTER GREEN ENERGY ELE...sanjay kumar pediredla
 
DIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUIT
DIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUITDIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUIT
DIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUITsanjay kumar pediredla
 
ELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLAB
ELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLABELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLAB
ELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLABsanjay kumar pediredla
 
power systems ppt on Arc welding and Electric welding equipment and compariso...
power systems ppt on Arc welding and Electric welding equipment and compariso...power systems ppt on Arc welding and Electric welding equipment and compariso...
power systems ppt on Arc welding and Electric welding equipment and compariso...sanjay kumar pediredla
 
CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...
CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...
CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...sanjay kumar pediredla
 
CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT
CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT
CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT sanjay kumar pediredla
 
DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT VALUE WITH COST ANAL...
DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT  VALUE WITH COST ANAL...DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT  VALUE WITH COST ANAL...
DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT VALUE WITH COST ANAL...sanjay kumar pediredla
 
PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT
PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT  PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT
PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT sanjay kumar pediredla
 
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS SIMULATION OF DC SERIES MOTOR CHARACTERISTICS
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS sanjay kumar pediredla
 
PROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANT
PROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANTPROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANT
PROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANTsanjay kumar pediredla
 
ANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOT
ANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOTANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOT
ANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOTsanjay kumar pediredla
 
LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB
LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB  LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB
LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB sanjay kumar pediredla
 
DOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTION
DOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTIONDOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTION
DOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTIONsanjay kumar pediredla
 
IMPULSE RESPONSE OF SECOND ORDER SYSTEM
IMPULSE RESPONSE OF SECOND ORDER SYSTEMIMPULSE RESPONSE OF SECOND ORDER SYSTEM
IMPULSE RESPONSE OF SECOND ORDER SYSTEMsanjay kumar pediredla
 

Mehr von sanjay kumar pediredla (20)

TIME RESPONSE OF SECOND ORDER SYSTEM USING MATLAB
TIME RESPONSE OF SECOND ORDER SYSTEM USING MATLABTIME RESPONSE OF SECOND ORDER SYSTEM USING MATLAB
TIME RESPONSE OF SECOND ORDER SYSTEM USING MATLAB
 
PPT IS ON MICROGRID
PPT IS ON MICROGRIDPPT IS ON MICROGRID
PPT IS ON MICROGRID
 
UP AND DOWN FADING OF LED
UP AND DOWN FADING OF LEDUP AND DOWN FADING OF LED
UP AND DOWN FADING OF LED
 
MODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINK
MODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINKMODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINK
MODELLING OF DC SERVO MOTOR USING MATLAB-SIMULINK
 
THIS PPT ON ELECTRONIC FUEL INJECTION SYSTEM
THIS PPT ON ELECTRONIC FUEL INJECTION SYSTEMTHIS PPT ON ELECTRONIC FUEL INJECTION SYSTEM
THIS PPT ON ELECTRONIC FUEL INJECTION SYSTEM
 
GREEN ENERGY ELECTRICAL POWER CONVERTER GREEN ENERGY ELE...
GREEN ENERGY ELECTRICAL POWER CONVERTER                      GREEN ENERGY ELE...GREEN ENERGY ELECTRICAL POWER CONVERTER                      GREEN ENERGY ELE...
GREEN ENERGY ELECTRICAL POWER CONVERTER GREEN ENERGY ELE...
 
DIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUIT
DIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUITDIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUIT
DIGITAL ELECTRONICS DESIGN OF 3 BIT MAJORITY CIRCUIT
 
ELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLAB
ELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLABELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLAB
ELECTRICAL CIRCUIT ANALYSIS PROBLEM SOLUTION IN MATLAB
 
power systems ppt on Arc welding and Electric welding equipment and compariso...
power systems ppt on Arc welding and Electric welding equipment and compariso...power systems ppt on Arc welding and Electric welding equipment and compariso...
power systems ppt on Arc welding and Electric welding equipment and compariso...
 
CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...
CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...
CONTROL SYSTEM PPT ON DETERMINATION OF SABILITY OF SYSTEM USING NYQUIST PLOT ...
 
CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT
CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT
CONTROL SYSTEMS PPT ON A UNIT STEP RESPONSE OF A SERIES RLC CIRCUIT
 
DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT VALUE WITH COST ANAL...
DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT  VALUE WITH COST ANAL...DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT  VALUE WITH COST ANAL...
DESIGN OF CIRCUIT DEBITS THE GIVEN VALUE TO THE DEFAULT VALUE WITH COST ANAL...
 
PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT
PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT  PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT
PROBLEM SOLVING ON THE MUTUAL INDUCTANCE OF COUPLED CIRCUIT
 
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS SIMULATION OF DC SERIES MOTOR CHARACTERISTICS
SIMULATION OF DC SERIES MOTOR CHARACTERISTICS
 
GREEN ENERGY ELECTRIC POWER CONVERTER
GREEN ENERGY ELECTRIC POWER CONVERTERGREEN ENERGY ELECTRIC POWER CONVERTER
GREEN ENERGY ELECTRIC POWER CONVERTER
 
PROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANT
PROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANTPROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANT
PROBLEM ON THE POWERFACTOR CORRRECTION IN POWER PLANT
 
ANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOT
ANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOTANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOT
ANALYZE THE STABILITY OF DC SERVO MOTOR USING NYQUIST PLOT
 
LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB
LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB  LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB
LEADCOMPENSATOR DESIGN FOR A SYSTEM USING MATLAB
 
DOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTION
DOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTIONDOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTION
DOUBLE CAGE INDUCTION MOTOR AND IT'S CONSTRUCTION
 
IMPULSE RESPONSE OF SECOND ORDER SYSTEM
IMPULSE RESPONSE OF SECOND ORDER SYSTEMIMPULSE RESPONSE OF SECOND ORDER SYSTEM
IMPULSE RESPONSE OF SECOND ORDER SYSTEM
 

Último

Flutter GDE session GDSC ZHCET AMU, aligarh
Flutter GDE session GDSC ZHCET AMU, aligarhFlutter GDE session GDSC ZHCET AMU, aligarh
Flutter GDE session GDSC ZHCET AMU, aligarhjamesbond00714
 
Tekom Netherlands | The evolving landscape of Simplified Technical English b...
Tekom Netherlands | The evolving landscape of Simplified Technical English  b...Tekom Netherlands | The evolving landscape of Simplified Technical English  b...
Tekom Netherlands | The evolving landscape of Simplified Technical English b...Shumin Chen
 
PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...
PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...
PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...Luuk Brederode
 
Conventional vs Modern method (Philosophies) of Tunneling-re.pptx
Conventional vs Modern method (Philosophies) of Tunneling-re.pptxConventional vs Modern method (Philosophies) of Tunneling-re.pptx
Conventional vs Modern method (Philosophies) of Tunneling-re.pptxSAQIB KHURSHEED WANI
 
Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)
Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)
Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)Mizan Rahman
 
Wave Energy Technologies Overtopping 1 - Tom Thorpe.pdf
Wave Energy Technologies Overtopping 1 - Tom Thorpe.pdfWave Energy Technologies Overtopping 1 - Tom Thorpe.pdf
Wave Energy Technologies Overtopping 1 - Tom Thorpe.pdfErik Friis-Madsen
 
Navigating Process Safety through Automation and Digitalization in the Oil an...
Navigating Process Safety through Automation and Digitalization in the Oil an...Navigating Process Safety through Automation and Digitalization in the Oil an...
Navigating Process Safety through Automation and Digitalization in the Oil an...soginsider
 
pulse modulation technique (Pulse code modulation).pptx
pulse modulation technique (Pulse code modulation).pptxpulse modulation technique (Pulse code modulation).pptx
pulse modulation technique (Pulse code modulation).pptxNishanth Asmi
 
Evaluation Methods for Social XR Experiences
Evaluation Methods for Social XR ExperiencesEvaluation Methods for Social XR Experiences
Evaluation Methods for Social XR ExperiencesMark Billinghurst
 
Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024
Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024
Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024California Asphalt Pavement Association
 
autonomous_vehicle_working_paper_01072020-_508_compliant.pdf
autonomous_vehicle_working_paper_01072020-_508_compliant.pdfautonomous_vehicle_working_paper_01072020-_508_compliant.pdf
autonomous_vehicle_working_paper_01072020-_508_compliant.pdfPandurangGurakhe
 
Injection Power Cycle - The most efficient power cycle
Injection Power Cycle - The most efficient power cycleInjection Power Cycle - The most efficient power cycle
Injection Power Cycle - The most efficient power cyclemarijomiljkovic1
 
Governors ppt.pdf .
Governors ppt.pdf                              .Governors ppt.pdf                              .
Governors ppt.pdf .happycocoman
 
EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...
EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...
EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...marijomiljkovic1
 
Support nodes for large-span coal storage structures
Support nodes for large-span coal storage structuresSupport nodes for large-span coal storage structures
Support nodes for large-span coal storage structureswendy cai
 
Searching and Sorting Algorithms
Searching and Sorting AlgorithmsSearching and Sorting Algorithms
Searching and Sorting AlgorithmsAshutosh Satapathy
 
0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptx
0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptx0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptx
0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptxssuser886c55
 

Último (20)

Flutter GDE session GDSC ZHCET AMU, aligarh
Flutter GDE session GDSC ZHCET AMU, aligarhFlutter GDE session GDSC ZHCET AMU, aligarh
Flutter GDE session GDSC ZHCET AMU, aligarh
 
FOREST FIRE USING IoT-A Visual to UG students
FOREST FIRE USING IoT-A Visual to UG studentsFOREST FIRE USING IoT-A Visual to UG students
FOREST FIRE USING IoT-A Visual to UG students
 
Tekom Netherlands | The evolving landscape of Simplified Technical English b...
Tekom Netherlands | The evolving landscape of Simplified Technical English  b...Tekom Netherlands | The evolving landscape of Simplified Technical English  b...
Tekom Netherlands | The evolving landscape of Simplified Technical English b...
 
PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...
PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...
PhD summary of Luuk Brederode, presented at 2023-10-17 to Veitch Lister Consu...
 
Conventional vs Modern method (Philosophies) of Tunneling-re.pptx
Conventional vs Modern method (Philosophies) of Tunneling-re.pptxConventional vs Modern method (Philosophies) of Tunneling-re.pptx
Conventional vs Modern method (Philosophies) of Tunneling-re.pptx
 
Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)
Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)
Fabrics Finishing Manual ( Arkey Knit Dyeing Mills Ltd)
 
Update on the latest research with regard to RAP
Update on the latest research with regard to RAPUpdate on the latest research with regard to RAP
Update on the latest research with regard to RAP
 
Wave Energy Technologies Overtopping 1 - Tom Thorpe.pdf
Wave Energy Technologies Overtopping 1 - Tom Thorpe.pdfWave Energy Technologies Overtopping 1 - Tom Thorpe.pdf
Wave Energy Technologies Overtopping 1 - Tom Thorpe.pdf
 
Navigating Process Safety through Automation and Digitalization in the Oil an...
Navigating Process Safety through Automation and Digitalization in the Oil an...Navigating Process Safety through Automation and Digitalization in the Oil an...
Navigating Process Safety through Automation and Digitalization in the Oil an...
 
pulse modulation technique (Pulse code modulation).pptx
pulse modulation technique (Pulse code modulation).pptxpulse modulation technique (Pulse code modulation).pptx
pulse modulation technique (Pulse code modulation).pptx
 
Evaluation Methods for Social XR Experiences
Evaluation Methods for Social XR ExperiencesEvaluation Methods for Social XR Experiences
Evaluation Methods for Social XR Experiences
 
Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024
Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024
Caltrans District 8 Update for the CalAPA Spring Asphalt Conference 2024
 
autonomous_vehicle_working_paper_01072020-_508_compliant.pdf
autonomous_vehicle_working_paper_01072020-_508_compliant.pdfautonomous_vehicle_working_paper_01072020-_508_compliant.pdf
autonomous_vehicle_working_paper_01072020-_508_compliant.pdf
 
Industry perspective on cold in-place recycling
Industry perspective on cold in-place recyclingIndustry perspective on cold in-place recycling
Industry perspective on cold in-place recycling
 
Injection Power Cycle - The most efficient power cycle
Injection Power Cycle - The most efficient power cycleInjection Power Cycle - The most efficient power cycle
Injection Power Cycle - The most efficient power cycle
 
Governors ppt.pdf .
Governors ppt.pdf                              .Governors ppt.pdf                              .
Governors ppt.pdf .
 
EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...
EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...
EJECTOR REFRIGERATION CYCLE WITH THE INJECTION OF A HIGH DENSITY FLUID INTO A...
 
Support nodes for large-span coal storage structures
Support nodes for large-span coal storage structuresSupport nodes for large-span coal storage structures
Support nodes for large-span coal storage structures
 
Searching and Sorting Algorithms
Searching and Sorting AlgorithmsSearching and Sorting Algorithms
Searching and Sorting Algorithms
 
0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptx
0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptx0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptx
0950_Rodriguez_200520_Work_done-GEOGalicia_ELAB-converted.pptx
 

Electrical dc machines

  • 1. ELECTRICAL DC MACHINES RAGHU ENGINEERING COLLEGE 1 PRESENTED BY P.SANJAY KUMAR
  • 2. INDEX S.r no Topic Name 1 INTRODUCTION 2 PRINCIPLE OF OPERATION 3 CONSTRUCTION 4 WORKING 5 CLASSIFICATION 6 APPLICATIONS 2
  • 3. INTRODUCTION • The Device which Converts the Mechanical Energy into Electrical Energy is called Generator. • There are Two types of Generators 1. D.C Generator:- The Generator which converts the Mechanical Energy into D.C Form of Electrical Energy is called D.C Generator. 2. A.C Generator:- The Generator which converts the Mechanical Energy into A.C Form of Electrical Energy is called A.C Generator. • Both of the Generator Works on the Principle of Faraday’s Law of Electromagnetic Induction. 3
  • 4. PRINCIPLE OF OPERATION • In 1831, Michael Faraday, an English physicist gave one of the most basic laws of electromagnetism called Faraday's law of electromagnetic induction. 4
  • 5. CONSTRUCTION • Important Parts of D.C Generator 1. YOKE 2. POLES 3. FIELD WINDING 4. ARMATURE 5. COMMUTATOR,BRUSHES and GEAR 6. BEARINGS5
  • 6. YOKE • Yoke is also called as frame. It provides protection to the rotating and other parts of the machine from moisture, dust etc. • Yoke is an iron body which provides the path for flux • It provides the mechanical support for the poles. • Materials used for yoke are cast iron, silicon steel, cast steel, rolled steel etc. 6
  • 7. POLE • Pole produce the magnetic flux when the field winding is excited. • Materials used for Pole is cast steel or cast iron. • Pole is a Part on Which Field Winding is Wound Over. 7
  • 8. FIELD WINDING • The field winding is also called as exciting winding. • Current is passed through the field winding in a specific direction ,to magnetize the pole. • The metal is used for the field conductor is copper. 8
  • 9. ARMATURE CORE • All these slots are parallel to the shaft axis. •Armature conductor are placed in these slots. •Armature core provides a low reluctance path to the flux produced by the field winding. •Cast steel or cast iron are used for the armature core. 9
  • 10. COMMUTATOR • The commutator converts the alternating emf generated internally in a D.C. voltage . • It collects the current from the armature conductors and passes it to the external load via brush. 10
  • 11. ROTOR • The Rotor is the moving part of a D.C. generator. • The rotor rotates because the wires and magnetic field of the motor are arranged so that a torque is developed about the rotor’s axis. 11
  • 12. WORKING of DC GENERATOR 12
  • 13. • The Dc Generator Converts Mechanical Energy into Electrical Energy. • In this DC Generator the Single Turn Alternator is used. • The Coil can Rotate in Clockwise or Anticlockwise Direction. • The Commutator Brush is Connected to the Coil. • Commutator is Divided into Two Parts A and B. • The Coil is Suspended between the Field Poles. • The Coil is Given the Mechanical Energy which Results in the Rotation of it. • As the Commutator Segments A&B is Connected with Conducting Coil ab and cd Respectively they Rotate Together. • Due to Which the Flux is Produced Resulting in the Generation of Electric Current. 13
  • 14. • As the Commutator has the Property of Converting the Bidirectional Emf(AC) into Unidirectional Emf (DC) . • The DC Current is Generated by the DC Generator. • Which can Directly Used by Connecting the Output across the Load or it Can be stored inatteries and Can be used Later on. 14
  • 15. Derivation for Induced EMF of One Armature Conductor For one revolution of the conductor,Let, Φ = Flux produced by each pole in weber (Wb) P = number of poles in the DC generator. therefore, Total flux produced by all the poles Time taken to complete one revolution 15
  • 16. Now, according to Faraday’s law of induction, the induced emf of the armature conductor is denoted by “e” which is equal to rate of cutting the flux. DERIVATION FOR INDUCED EMF FOR DC GENERATOR Induced emf of DC generator E = emf of one conductor × number of conductor connected in series. Induced emf of DC generator is 16
  • 17. Simple wave wound generator Numbers of parallel paths are only 2 = A Induced emf for wave type of winding generator is Here, number of parallel paths is equal to number of conductors in one path P = A Induced emf for lap-wound generator is 17
  • 18. 18
  • 20. APPLICATIONS • Shunt generator: Lighting loads Battery charging • Series generator: For the arc lamps As constant current generator As boosters on D.C. generator 20
  • 21. • Separately Exicted generator: The application of these generator have limitations , because they need a separate excitation for the field winding. Some of the application are electro-refining of materials or electroplating • Cumulative compound generator: Used for domestic lighting For energy transmission over a long distance. • Differential compound generator: • Its important application is electric arc welding 21
  • 22. 22