dc machines construction ppt

Construction of a DC Generator - explanation of .

13.11.2015· Construction of a DC Generator 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.

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Chapter 5: AC Machine Fundamentals | .

24.08.2020· AC machines differ from dc machines by having their armature windings almost always located on the stator while their field windings are located on the rotor. A set of three-phase ac voltages is induced into the stator armature windings of an ac machine by the rotating magnetic field from the rotor field windings (generator action).

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Construction of dc machines - LinkedIn SlideShare

26.02.2014· Construction of dc machines 1. Construction of DC machines By, Rohini Haridas Assistant Professor, Dept of Electrical Engineering, SSGM College of Engineering,Shegaon 2. Is DC generator and motor have same construction??? 3. Main construction diagram 4. Main parts The two major parts required for construction : 1.

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DC MACHINE.pdf | Electric Motor | .

DC Machines. Generator action: An emf (voltage) is induced in a conductor if it moves through a magnetic field. Motor action: A force is induced in a conductor that has a current going through it and placed in a magnetic field Any DC machine can act either as a generator or as a motor. DC Machine is most often used for a motor.

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Working Principle of DC Motor - .

10.02.2019· There is no basic difference in the construction of a DC generator and a DC motor.. In fact, the same DC machine can be used interchangeably as a generator or as a motor. Like generators, there are different types of DC motors which are also classified into shunt-wound, series-wound and compound-wound dc motors.. DC motors are seldom used in ordinary applications because all .

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Lecture 6: Synchronous machines

Construction of synchronous machines Two common approaches are used to supply a DC current to the field circuits on the rotating rotor: 1. Supply the DC power from an external DC source to the rotor by means of slip rings and brushes; 2. Supply the DC power from a special DC power source mounted directly on the shaft of the machine.

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DC Motors - University of Rajshahi

DC Motors Although ac motors are used in most of the cases, DC motors have many applications and used for multi-purpose applications. DC Motor Principle A machine that converts dc power into mechanical energy is known as dc motor. Its operation is based on the principle that when a current carrying conductor is placed in a

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Principle of operation of DC Generator | Electrical .

Although a far greater percentage of the electrical machine in service are AC machines, the DC machines are of considerable industrial importance. The principle advantage of DC machine, Particularly the DC motor, is that it provides a fine control of speed. However, DC generators are not as common as they used to be, because direct current, when required, is mainly obtained from a AC .

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AC Machines - DEU

In some DC motors, permanent magnets are used in rotors and these types are called as Brushless DC Motors Alternate Current Machines 8 (BLDCM). The problem for these types is to sense the position of the rotor. Information about the position of the rotor is needed to be sent to the driver of the motor. Electric Motors Alternate Current Machines 9 In some AC motors, Aluminum bars are used as ...

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Construction of DC Machine - Polytechnic Hub

Construction of DC Machine - there are seven main parts of dc machine or motor generator which as follows Yoke Pole core and pole shoes Pole coil

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NPTEL :: Electrical Engineering - Electrical .

Operating Principles of DC Machines: Download Verified; 22: Constructional Features of DC Machines: Download Verified; 23: Generated EMF and Torque in DC Machines: Download Verified; 24: Armature Reaction: Download Verified; 25: Commutation in DC Machines: Download Verified; 26: Separately Excited DC Generators: Download Verified; 27: DC Shunt ...

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(PPT) Chapter 4 DC machines | Getahun Seifu - .

Academia.edu is a platform for academics to share research papers.

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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

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DC MACHINE.pdf | Electric Motor | .

DC Machines. Generator action: An emf (voltage) is induced in a conductor if it moves through a magnetic field. Motor action: A force is induced in a conductor that has a current going through it and placed in a magnetic field Any DC machine can act either as a generator or as a motor. DC Machine is most often used for a motor.

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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 ...

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Construction of DC Motor (Parts & Images) | .

The armature winding of DC motor is attached to the rotor, or the rotating part of the machine, and as a result is subjected to altering magnetic field in the path of its rotation which directly results in magnetic losses. For this reason the rotor is made of armature core, that's made with several low-hysteresis silicon steel lamination, to reduce the magnetic losses like hysteresis and ...

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Construction and Principle of Operation of the .

The DC Shunt-wound motor, running on Direct current, has its field windings placed in parallel to the armature. In Electrical terms, parallel is generally denoted as shunt. That is the reason behind naming it a DC Shunt motor. Same voltage is applied to both shunt winding and armature in this motor. This parallel configuration allows independent path of current for field winding and armature.

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7. DC Machines - Basic Electrical and Electronics ...

7.1 Introduction and Principle of Working. DC machines work either as a dc generator or as a dc motor. In a dc generator, a set of conductors or coils placed on a rotating body, called armature, are rotated continuously inside a magnetic field with the help of a prime mover (prime mover is another machine, may be a diesel engine or a turbine, which rotates the armature).

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Basic Principles and Functions of Electrical Machines

electric machine applications are also discussed. CLASSIFICATION OF ELECTRIC MACHINES There are several methods of classifying electric machines [6]: • Electric power supply - Electric machines are classified as D.C. and A.C. machines as well as according to their stator and rotor constructions as shown in Figure 1.

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Course Notes | Electric Machines | Electrical .

Don't show me this again. Welcome! This is one of over 2,200 courses on OCW. Find materials for this course in the pages linked along the left. MIT OpenCourseWare is a free & open publication of material from thousands of MIT courses, covering the entire MIT curriculum.. No enrollment or registration.

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The Basics of Permanent Magnet Motor Operations

• the power balance for the PM DC machine is: ... Motor construction • the field in the ... Microsoft PowerPoint - Brush DC motor.ppt Author: Administrator Created Date: 1/20/2003 8:35:55 PM ...

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ELECTRICAL MACHINE-II

Lecture Notes Electrical Machine– - II [BEE 1401] Page | 1 . Syllabus of Bachelor of Technology in Electrical Engineering (4th SEMESTER) ELECTRICAL MACHINES-II . Subject Code: BEE 1401 . Topics Page No. MODULE-III Three Phase Induction Motors: Types, Construction and

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(PDF) DC Motors - ResearchGate

03.05.2019· Construction of DC Machine: Across-section of a 4-pole DC motor is shown in f igure below: The construction generally consists of: 1-Yok e: This is the outer part of the DC motor.

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Experiment 1 The DC Machine

The DC Machine ECEN 4517 R. W. Erickson and D. Maksimovic The purpose of this experiment is to become familiar with operating principles, equivalent circuit models, and basic characteristics of a dc machine. Dc machines are most commonly used in control and servomechanism, as well as industrial, applications. The applications

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DC Generator: Construction, Working .

DC Generator. When a conductor slashes magnetic flux, then energetically induced electromotive force will be generated in it based on the Electromagnetic Induction principle of Faraday's Laws.This electromotive force can cause a flow of current when the conductor circuit is not opened. Construction of a DC .

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dc Generator Ppt - LinkedIn SlideShare

30.04.2013· dc Generator Ppt 1. Electric motors and generatorsJitendra kumar1103107 2. D.C. GENERATORS-CONSTRUCTION & OPERATIONDC GeneratorsPrinciple of operationAction of CommutatorConstructional details of DC MachineTypes of DC generatorsEMF Equation 3. DC Generator 4. DC .

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Elements of Electrical Machines

Lecture Notes Elements of Electrical Machines 12 Figure 2.3 : Torque in DC Motor Figure 4 : Current Flow in DC Motor Constructionally, there is no basic difference between a dc generator and motor. In fact, the same dc machine can be used interchangeably as a generator or as a motor. The basic construction of a dc

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Chapter2-1_Overview of DC Machines.ppt | .

Chapter2-1_Overview of DC Machines.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online.

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DC MACHINES - Adnan Menderes University

• In a dc machine, the armature winding is found on the rotating member, referred to as the rotor. Elementary DC Machines • The armature winding of a dc generator is on the rotor with current conducted from it by means of carbon brushes. • The field winding is on the stator and is excited by direct current. Electric Machines General • When a machine is converting electrical energy into ...

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DC Machine - Construction, Working, Types, EMF .

DC Machine Construction of DC Machine. The construction of DC machine can be done using some of the essential parts like Yoke, Pole core & pole shoes, Pole coil & field coil, Armature core, Armature winding otherwise conductor, commutator, brushes & bearings.

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