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Dc machines - SlideShare

May 12, 2013 · 3/23/2007 ELEC A6 DC Machine7DC MACHINESReal DC machine Construction• Stator: Stationary part of the machine.The stator carries a field winding that isused to produce the required magneticfield by DC excitation. Often know asthe field.• Rotor: The rotor is the rotating part ofthe machine

Dc Motor Construction and Working - SlideShare

Apr 11, 2019 · Dc Motor Construction and Working 1. DC Motor Construction and Working 2. • Electric motors are the most important element of today's industrial world. • From a simple drill machine to a sophisticated robotic arm electric motors are used

DC Machine - Construction, Working, Types, EMF Equation ...

Apr 26, 2019 · Construction of DC Machine Yoke. Another name of a yoke is the frame. The main function of the yoke in the machine is to offer mechanical support intended for poles and protects the entire machine from moisture, dust, etc. The materials used in the yoke are designed with cast iron, cast steel otherwise rolled steel. ...

Dc motor - SlideShare

Jul 04, 2013 · Construction of dc machines Rohini Haridas. dc Generator Ppt kiit university. Solenoid Rishikesh Borse. Thyristors Yassine Zahraoui. PUT (industrial electronic) Nor Aida Idayu Abdullah. Fet basics-1 Armando Bautista. Different types of transistors and their functions ...

D.c. machine - SlideShare

Aug 10, 2016 · •Construction of D.C. Machine •Working Principle of D.C Machine(Generator) •Method of Excitation •Armature Winding:- Introduction of Simplex lap & Wave Windings 3. Construction of D.C. Machine Cutaway view of a dc motor Stator with poles visible.

DC Machines - ROMANI'S...

8 DC Machines Construction The poles are mounted on an iron core that provides a closed magnetic circuit. The motor housing supports the iron core, the brushes and the bearings. The rotor has a ring-shaped laminated iron core with slots.

DC Machine - Construction, Working, Types and Applications

Construction of DC Machine. The DC machine consists of Yoke, Pole, and Pole shoe, Armature core, Field Winding, Armature Winding, Commutator, Brushes, shaft, and Bearings. Let’s explain each part in detail with applications. Yoke or Frame. The yoke is also known as the frame.

DC MACHINES AND TRANSFORMERS

II. Demonstrate the working principle of different types of dc machines and transformers. III. Analyze the losses in dc machines to improve the efficiency by conducting various tests. IV. Outline the principle of operation, construction and testing of single phase transformers. UNIT-I

Chapter2-1 - Overview of DC Machines | PDF ...

Save Save Chapter2-1_Overview of DC Machines.ppt For Later. 75% (4) 75% found this document useful (4 votes) 3K views 40 pages. Chapter2-1 - Overview of DC Machines. ... Overview of Direct Current Machines Construction Principle of Operation Types of DC Motor Power Flow Diagram Speed Control LEARNING OBJECTIVES

DC GENERATOR - SlideShare

Oct 13, 2016 · dc generator 1. electrical machines instrumentation & control dept d.c generator prepared by ketan nayak (140413117005) ashish patil (140413117009) 2. index s.r no topic name 1 introduction 2 principle of operation 3 construction 4

Construction of DC Machine (Generator & Motor)

The dc generators and dc motors have the same general construction. In fact, when the machine is being assembled, the workmen usually do not know whether it is a dc generator or motor. Any dc generator can be run as a dc motor and vice-versa. Read: Working of DC Motor

Basic construction and working of a DC Generator ...

Hence, let's call this point as construction of a DC machine instead of just 'construction of a dc generator'. The above figure shows constructional details of a simple 4-pole DC machine. A DC machine consists of two basic parts; stator and rotor. Basic constructional parts of a DC machine

Construction of dc Machines

Construction of dc Machines: The rotor in a dc machine is called an armature. The armature has cylindrical steel core that is composed of a stack of slotted laminations. Slots in laminations are aligned axially along rotor or shaft. Armature windings are placed in slots. The stator in a dc machine is the field part of the machine.

Electrical Machines I

Construction of a DC machine. EMF and torque equations in dc machines. Armature windings and commutator design. Armature reaction and compensation techniques. Self excitation of dc generators. External characteristics of dc generators. Kinds of losses and efficiency of dc machines. Torque and speed characteristics of dc motors. Speed control of ...

Working principle of dc motor - SlideShare

Feb 27, 2019 · Working Principle The working of DC motor is based on the principle that when a current carrying conductor is placed in a magnetic field, it experiences a mechanical force. The direction of the mechanical force is given by Fleming’s Left-hand Rule and its magnitude is given by F = BIL Newton.

Introduction to DC Machines, Working, Construction ...

Dec 10, 2019 · Hello, fellows, I hope all of you are having fun in your life. In today’s tutorial, we will have a look at Introduction to DC Machines.Like alternating current machines, there are 2 types of DC machines first one is DC motors that convert electrical power into mechanical power and the second one is DC generator that converts mechanical power into electrical.

THEORY, CONSTRUCTION, AND OPERATION

INTRODUCTION TO BASIC NOTIONS ON ELECTRIC POWER 5 Electric Current Conductor Lines of Force Fig. 1.3 Schematic representation of a magnetic field created by the flow of current in a conductor. The direction of the lines of force is given by the “law of the screwdriver”: mentally follow the movement of a screw as it is screwed in the same direction as that

PPT – DC MOTOR PowerPoint presentation | free to download ...

Electric Motor Manufacturing Plant Project Report PPT 2021-2026 - Expansion in industrial automation represents one of the significant factors propelling the growth of the market. Additionally, technological advancements have enabled manufacturers to introduce compact, stronger, and more efficient variants, such as axial-flux electric motors.

Course Notes | Electric Machines | Electrical Engineering ...

Elementary Synchronous Machine Models (PDF) 5: Winding Inductances (PDF) 6: DC (Commutator) and Permanent Magnet Machiness (PDF) 7: Permanent Magnet "Brushless DC" Motors (PDF) 8: Analytic Design Evaluation of Induction Machines (PDF) 9: Synchronous Machine Simulation Models (PDF) 10: Induction Machine Control and Simulation (PDF) 11

What is a DC Machine? Basic structure & Equivalent circuit ...

A DC Machine is an electro-mechanical energy conversion device. There are two types of DC machines; one is the DC generator, and another one is known as DC motor. A DC generator converts mechanical power (ωT) into DC electrical power (EI), whereas, a DC motor converts d.c electrical power into mechanical power.

Construction of a DC Generator | Basic Electrical ...

This video tutorial explains the construction of a DC Generator. The topic of learning is a part of the Basic Electrical and Electronics Engineering course t...

Construction of a DC Generator - explanation of its ...

A DC Generator is an electrical device which converts mechanical energy into electrical energy. It mainly consists of three main parts, i.e. magnetic field system, armature and commutator and brush gear. The other parts of a DC Generator are magnetic frame and yoke, pole core and pole shoes, field or exciting coils, armature core and windings, brushes, end housings, bearings and shafts.

Principle of Operation of DC Generator - DC Machines ...

Subject - Basic Electrical EngineeringVideo Name - Principle of Operation of DC GeneratorChapter - DC MachinesFaculty - Hemant JadhavWatch the video lecture ...

D.C GENERATORS

three basic classification DC generators (1) permanent-magnet field (2) separately-excited field and (3) self-excited field. 1) permanent-magnet field permanent-magnet DC machines are widely found in a wide variety of low-power applications. The field winding is replaced by a permanent magnet, resulting in simpler construction.

DC machines - uliege.be

DC machines 1 DC machines Transformsmechanicalenergyintoelectric energywithDC voltage and current(DC generatoror dynamo), or conversely(DC motor)

DC GENERATOR - Weebly

A dc generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced emf. CONSTRUCTION: Cross Sectional View of DC Generator Above figure shows the constructional details of a simple 4-pole DC generator. A DC generator

Direct-Current Machines - Engineering

• DC machines can develop rated torque at all speeds from standstill (locked-rotor) to rated speed. DC machines are easier to analyze than their AC counterparts, although their construction is made rather complex by the fact that they need a commutator, which reverses the direction of currents and fluxes to produce a net torque. • DC motors ...

DC Motor Working Principle, Construction and Diagram ...

Oct 03, 2020 · CONSTRUCTION OF DC MOTOR. All DC machines mainly consist of two parts. One is the stator and the other is Rotor. The stator is a stationary part that includes yoke, pole, pole winding, and Interpoles. The stator produces the magnetic flux. The rotor of the dc machine consists of a commutator, brushes, compensating winding, and a shaft.

Construction of DC Motor (Parts & Images) | Electrical4U

Mar 20, 2013 · Construction of DC Motor (Parts & Images) A DC motor is a device that converts direct current electrical energy to mechanical energy (learn about a DC motor’s working principle ). A DC motor is constructed with: A stator is the static part of the DC machine that houses the field windings and receives the supply.

ELECTRICAL MACHINE-II

welded to the end rings shown in Fig: 3.1(b).In small machines the conductor bars and end rings are sometimes made of aluminium with the bars and rings cast in as part of the rotor core. Actually the entire construction (bars and end-rings) resembles a squirrel cage, from which the name is derived.

DC Machine: Basic Components and Function | EE Power School

Mar 17, 2021 · An essential example of a DC machine is a copper coil spinning on its own axis between two magnets. A practical DC machine also needs a commutator, brushes, poles and bearings. 1- Field (magnetic poles) 2- Armature. 3- Commutator. 4- Yoke and Bearings. 5- Carbon Brushes of a DC Machine. 1. Field Winding of a DC Machine. The field is the ...

DC Generator: Types, Working Principle, Construction ...

Jul 02, 2020 · 1. Separately Excited Generator. 5.2. 2. Self-excited Generator. 6. Applications of D.C. Generators. An electrical DC generator is a machine which turns mechanical energy into electrical energy. Or in other words it is a machine which converts mechanical energy into a direct current.

ANIMATION OF ELECTRIC MACHINES

Schematic diagram of a dc machine: 2. Schematic diagram of a brushless dc motor: 3. Position control of a dc motor: 4. Schematic diagram of a round-rotor induction motor: 5. Structure of a squirrel-cage induction machine: 6. Principle of operation of squirrel-cage induction motor and generator: 7.

Commutation in DC Machine or Commutation in DC Generator ...

Feb 24, 2012 · The voltage generated in the armature, placed in a rotating magnetic field, of a DC generator is alternating in nature. The commutation in DC machine or more specifically commutation in DC generator is the process in which generated alternating current in the armature winding of a dc machine is converted into direct current after going through the commutator and the stationary

Electrical Machines | electricaleasy

Construction and working of a DC generator. Armature winding Lap winding, wave winding and other related terms. Armature reaction Armature reaction in DC machines and it's adverse effects. EMF and Torque equation EMF equation of a DC generator and torque equation of a DC motor. Characteristics of DC generators Internal (E/Ia), external (V/I L ...

NPTEL :: Electrical Engineering - Electrical Machines -I

Electrical Machines -I. Introduction. Operating Principles and Construction of Single Phase Transformers. Modeling of Single Phase Transformers. Equivalent Circuits of Single Phase Transformers. Testing of Single Phase Transformers. Efficiency of Single Phase Transformers. Voltage Regulation of Single Phase Transformers.

Synchronous Generator : Construction, Working Principle ...

Jan 22, 2020 · This machine will increase the turbine cost and makes pressure on the generator as well as the turbine. The operation of these generators in changeable speed will produce variable frequency power as well as variable voltage. Construction. The construction of a synchronous generator is shown below. The main parts of this motor mainly include a ...