Dc machines | PPT
Dc machines - Download as a PDF or view online for free. Submit Search. Dc machines ... Wednesday, January 27, 2016 Ch. 16 DC Machines 13 Construction • The main parts of a DC machine are – Yoke – Poles, pole …
DC Machines Fundamentals
A DC Machines can be used as either a DC generator or a DC motor. Electrical Machines Introduction A DC Machines can be used as either a DC generator or a DC motor. DC generators - To convert mechanical energy to electrical energy. - Limited use due to solid state rectifier. DC motors - To convert electrical energy to mechanical energy - Widely used - Main feature: …
DC Machines.
10 DC Machines Construction • Stator: Stationary part of the machine. The stator carries a field winding that is used to produce the required magnetic field by DC excitation. Often know as the field. • Rotor: The rotor is the rotating part of …
Construction of dc machines | PPT
Construction of dc machines - Download like a PDF alternatively sight online for free. Construction of dc machines - Downloaded as a PDF or view online for free. Submit Search. Upload. Construction of dc machines. Rohini Haridas Assistant Professor (Electrical Engineering) at K.K.Wagh institute of Engineering Education & Research,Nashik.
Construction Of A Dc Machine Ppt
Dc machines ppt | PPT. Dc machines ppt. A DC generator converts mechanical energy into electrical energy using electromagnetic induction. It consists of a magnetic frame, field poles, an armature, and a commutator. The armature rotates under the poles, cutting the magnetic flux and inducing an EMF. The commutator converts the alternating EMF ...
DC-machines (2).ppt
DC-machines (2).ppt - Download as a PDF or view online for free. ... Lenz's law, the construction and working principles of DC generators and motors. It describes the field system, armature, commutator, and brushes of DC machines. It also covers EMF equations, armature reaction, types of DC generators and motors, speed control methods ...
dc machines construction ppt( WhatsApp )
Construction of DC Machines The Engineering Knowledge. So let''s get started with the Construction of DC Machines. Construction of DC Machines In the structure of DC machine either dc motor or generator, there are 2 main parts first one is the static or the second one is moving. The static part is stator and moving part is rotor.
DC-machines.ppt
DC-machines.ppt - Download as a PDF or view online for free. ... Lenz's law, the construction and working principles of DC generators and motors. It describes the field system, armature, commutator, brushes, and winding types in DC machines. It also covers EMF equations, characteristics, speed control methods, losses, testing, and applications ...
dc machines construction ppt
DC machines.ppt. Post on 07-Sep-2015. 223 views. Category: Documents. 1 download. Report. Construction of a dc machine. Construction of a dc machine. 1. Construction Of A DC Machine. 2. 4-pole DC machine. 3. A DC machine consists two basic parts; • stator • rotor. Yoke: The outer frame of a dc machine is called as yoke.
Dc machines ppt | PPT
57. Applications of DC Motors • DC shunt motor are used where speed has to maintain nearly constant with load and where a high starting torque is not required. Thus shunt motors may be used for driving centrifugal pumps and light machine tools, wood working machines, lathe etc., • Series motors are used where the load is directly attached to the shaft …
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Dc machines 1 | PPT
Dc machines 1 - Download as a PDF or view online for free. Submit Search. Dc machines 1 • Download as PPT, PDF ... DC Machine Construction General arrangement of a dc machine 7. DC Machines The …
DC-machines.ppt
DC-machines.ppt - Download as a PDF or view online for free. ... Lenz's law, the construction and working principles of DC generators and motors. It describes the field system, armature, commutator, and brushes of DC machines. It also covers EMF equations, armature reaction, types of DC generators and motors, speed control methods, efficiency ...
DC Machines Fundamentals
Electrical Machines Introduction A DC Machines can be used as either a DC generator or a DC motor. DC generators - To convert mechanical energy to electrical energy. - Limited use due …
Dc machines (Generator & Motor) | PPT
Dc machines (Generator & Motor) - Download as a PDF or view online for free. Submit Search. Dc machines (Generator & Motor) ... It also describes the construction and working principles of DC generators and motors, including their components like the armature, commutator, and field windings. Various types of DC machines are classified based on ...
Unit5:- D.C Machines | PPT
• Download as PPT, PDF • 30 likes • 12,758 views. AI-enhanced description. Abhinay Potlabathini Follow. This document provides information on DC machines, including their construction and operation principles. It describes how a DC machine can operate as either a motor or a generator. The rotor has coils wound in slots with ends connected ...
Working principle of dc motor | PPT
3. Working of a DC Motor How it Works An elementary model is shown here in fig (a) to understand the working in easy way. • Invariably all dc motors consist of a set of magnetic poles (North and south) to create magnetic field shown in fig (b). •All dc motor consist of windings represented by a single loop in this model for simplicity fig (c).
Dc motor construction | PPT
12. FIELD WINDING OF DC MOTOR • The field winding of DC motor are made with field coils (copper wire) wound over the slots of the pole shoes in such a manner that when field current flows through it. • Then adjacent poles have opposite polarity are produced. • The field winding basically form an electromagnet, that produces field flux within which the rotor …
Presentation On Dc Motors | PPT
5. Construction of DC MOTOR FIELD POLES- The pole shoe acts as a support to the field coils and spread out the flux in the air gap and reduce the reluctance of magnetic field. FRAME- The Frame is the stationary part of a machine in which poles, and rotor are stationed. ARMATURE- The armature consist of core and winding. It is built up of thin lamination of low …
What is a DC Machine : Construction & Its Working
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. ...
PPT – dc generators ppt PowerPoint presentation
ppt on working of dc generators – A free PowerPoint PPT presentation (displayed as an HTML5 slide show) on PowerShow - id: 3ca4ea-MjJhO
Rotating Electrical Machines-AC & DC Machines,Induction Motor and DC
6. Construction - a revolving rotor • composed of punched laminations, stacked to create a series of rotor slots, providing space for the rotor winding • one of two types of rotor windings • conventional 3-phase windings made of insulated wire (wound-rotor) » similar to the winding on the stator • aluminum bus bars shorted together at the ends by two aluminum …
Dc machines | PPT
49. DC GENERATORS LOSSES IN DC GENERATORS • STRAY LOSSES : Consist of (a) iron losses or core losses and (d) Windage and friction losses. • IRON LOSSES : Occurs in the core of the machine due to change of …
CONSTRUCTION OF DC MACHINE UNIT-III BY S RATNA …
construction of dc machine unit-iii by s ratna kumar. lap winding . lap winding and wave winding . winding progresses,winding retrogresses. equalizer rings. uses of lap winding. ... of dc machines . dc generator symbol. dc coupled machines . methods of excitation . seperately excited generator. voltage and current relation. problem.
DC Machine – Construction, Working, Types and Applications
A DC machine is an electromechanical device that is used to convert electrical energy into mechanical energy or vice versa. The DC machine used to convert electrical energy into mechanical energy, which is known as DC motor and the DC machine used to convert mechanical energy into …
DC Machine
Microsoft PowerPoint - DC Machine Author: Kishore Chatterjee Created Date: 8/28/2009 3:51:44 PM ...
Starting methods Of DC Machines | PPT
3. Since the resistance Ra is much smaller the motor draws large starting armature current from the supply mains. Such a heavy inrush of starting current taken by the motor may result in:- 1) Detrimental sparking at the …
Dc machines ppt | PPT
Dc machines ppt - Download as a PDF or view online for free. Submit Search. ... As it requires a definite shape and size, laminated construction is used. The laminations of required size and shape are stamped together to get a pole which is then bolted to the yoke. Each pole is divided into two parts namely, I) Pole core and II) Pole shoe.
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dc Generator Ppt | PPT
5. D.C. GENERATORS PRINCIPLE OF OPERATION DC generator converts mechanical energy into electrical energy. when a conductor move in a magnetic field in such a way conductors cuts across a magnetic flux of lines and e.m.f. produces in a generator and it is defined by faradays law of electromagnetic induction e.m.f. causes current to flow if the …
DC-machines.ppt
DC-machines.ppt - Download as a PDF or view online for free. ... Lenz's law, the construction and working principles of DC generators and motors. It describes the field system, armature, commutator, brushes, and winding types. It also covers EMF equations, characteristics, speed control methods, losses, testing, and applications of DC ...
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PPT
DKT 213 CHAPTER 4 Introduction to DC Machine. Contents • Overview of Direct Current Machines • Construction • Principle of Operation • Types of DC Machine • Power Flow Diagram • Speed Control. LEARNING OBJECTIVES • Upon completion of the chapter the student should be able to: • State the principle by which machines convert mechanical energy …
construction and parts of DC generator | PPT
Pole s The magnetic poles are structures fitted onto the inner wall of the yoke with screws. The construction of magnetic poles basically comprises of two parts namely, the core and the pole stacked together hydraulic pressure and pole shoe under then attached to the yoke.
Commutation in DC Machines | PPT
3. If the current reversal ie. The change from '+I' to zero and then to '-I' is completed by the end of short circuit or commutation period, then the commutation is 'ideal commutation'. If current reversal is not complete by that time, then it will result in sparking in the brushes resulting in a 'non-ideal commutation.' Let us discuss the process of commutation or …