Induction motors | PPT
4. Introduction Three-phase induction motors are the most common and frequently encountered machines in industry - simple design, rugged, low-price, easy maintenance - wide range of power ratings: fractional horsepower to 10 MW - run essentially as constant speed from no-load to full load - Its speed depends on the …
THREE-PHASE INDUCTION MOTOR
4 CONSTRUCTION The three basic parts of an AC motor are the rotor, stator, and enclosure. A stationary stator consisting of a steel frame that supports a hollow, cylindrical core core, constructed from stacked laminations, having a number of evenly spaced slots, providing the space for the stator winding Electrical Machines
Types of AC Motors [Construction, Parts Working Principle] …
In this post, you'll learn what is AC motors and types of AC motors, working principle, construction, applications, advantages and disadvantages. A.C. Motors and Types. Contents show The motor which converts an alternating current into mechanical energy is known us air A.C. motor. ... The 3-phase motor is called asynchronous …
Tachogenerator | PPT
9. Working Principle • The armature of the DC tachogenerator is kept in the permanent magnetic field. • The armature of the tachogenerator is coupled to the machine whose speed is to be measured. • When the shaft of the machine revolves, the armature of the tachogenerator revolves in the magnetic field producing EMF which is proportional to …
A.c. generator | PPT
It includes sections on the principle, construction, theory of operation, circuit diagram, expression for induced electromotive force (emf), and applications. The key components of an AC generator are an …
PPT
Chapter 3. DC Machines. Mechanical system Mechanical system Electrical system Electrical system Coupling Magnetic Fields Electric Machines e, i e, i T, n T, n Motor Energy Flow Generator Electromagnetic Conversion • Energy is needed in different forms: • Light bulbs and heater electrical energy • Fans and rolling mills mechanical …
INDUCTION MACHINE_construction and principle | PPT
INDUCTION MACHINE_construction and principle - Download as a PDF or view online for free. Submit Search. ... If we interchange any two phases of the AC supply, we will get new phase sequence, then the direction of rotating magnetic field in three phase induction motor will reverse. It will start rotating in reverse direction and so …
Electrical dc machines | PPT
Electrical dc machines - Download as a PDF or view online for free ... INDEX S.r no Topic Name 1 INTRODUCTION 2 PRINCIPLE OF OPERATION 3 CONSTRUCTION 4 WORKING 5 CLASSIFICATION 6 APPLICATIONS 2 3. ... (AC) into Unidirectional Emf (DC) . • The DC Current is Generated by the DC Generator. • Which can Directly Used …
Ac motors and their types | PPT
Ac motors and their types - Download as a PDF or view online for free ... simple in construction and easy to repair. 15. 3 phase Induction Motor • Stator As its name indicate stator is a stationary part of induction motor. A three phase supply is given to the stator of induction motor. • Rotor The rotor is a rotating part of induction motor ...
Synchronous Motor: Construction, Working Principle
With the rotor position shown, let the North(N S) and South(S S) poles of the stator be at points A and B respectively.As you could observe, the north pole of the stator(N S) and the North pole of the rotor(N R) is closer in fig(a).Similarly, the south poles of both rotor and stator and closer to each other.
Dc machines | PPT
3. 3/23/2007 ELEC A6 DC Machine 3 DC Generator Fundamentals ( )e e B v = × ⋅ = v B l l sin cosα β α - angle between the direction in which the conductor is moving and the flux is acting. β - …
ball mill working principle | Henan Deya Machinery Co., Ltd.
Grinding is usually performed wet, although in certain applications dry grinding is used. When the mill is rotated, the mixture of medium, ore, and water, known …
(PPT) Intro to AC Machines | 14E209- KRITHIGA M.
The synchronous generator (alternator) is an electrical machine which converts mechanical power of prime mover into an electrical energy at required voltage and frequency. The synchronous generator always …
Introduction to AC Machines | PPT
4. AC Machines The principle of operation is govern by (i) the law of electro-magnetic induction and (ii) law of interaction. (i) Law of electromagnetic induction (Faraday's 1st law): An emf is induced in a conductor whenever it cuts across the magnetic field (ii) (ii) Law of interaction: whenever a current carrying conductor is placed in the …
4. Fundamentals of AC Machinery
Two major classes of AC machines: Synchronous Machines are motors and generators whose field current (or current in the rotor windings) is supplied by a direct connection …
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 …
Mesin ac ch4 | PPT
The fundamental principles of ac machines are very simple, but unfortunately, they are somewhat obscured by the complicated construction of real machines. This chapter will first explain the principles of ac machine operation using simple examples, and then consider some of the complications that occur in real ac …
Rotating Electrical Machines-AC & DC Machines,Induction …
4. Introduction Three-phase induction motors are the most common and frequently encountered machines in industry - simple design, rugged, low-price, easy maintenance - wide range of power ratings: fractional horsepower to 10 MW - run essentially as constant speed from no-load to full load - Its speed depends on the …
DC & AC MACHINES.
An dc motor is a machine that converts electrical energy into mechanical energy by supplying a dc power (voltage and current). An advantage of DC motors is that it is easy …
Ac machines | PPT
Ac machines - Download as a PDF or view online for free. 5. Speed/Load Characteristics • have low starting torque, low efficiency, medium high running current, low power characteristics, no capacitors, no starting switch and are low cost • found on small direct drive furnace blowers, window fans and other fan applications found in the …
Principles and Working of DC and AC machines
Series-Wound Generator or Series connected generator. In the series-wound generator, the field windings are connected in series with the armature. Current that flows in the …
Henan Good Heavy Machinery Manufacture Co., Ltd.
Henan Good Heavy Machinery Manufacture Co., Ltd. is a leading brand form China. Currently the company is associated with eWorldTrade. Henan Good Heavy Machinery …
Ac motors | PPT
Ac motors - Download as a PDF or view online for free. 7. SINGLE PHASE MOTORTo operated on single phase supply and for use in numerous application like ceiling fans, refrigerators, food mixers ect.A single phase induction motor physically looks similar to that of a three phase induction motor except that its stator is provided with a single …
Construction of a dc machine | PPT
This document summarizes the construction of a 4-pole DC machine. It has two main parts: the stator and rotor. The stator contains the yoke, poles, pole shoes, and field winding. The yoke provides mechanical strength and carries magnetic flux. Poles hold the field winding and pole shoes spread flux uniformly.
Air conditioning system | PPT
8. 2) Split Air-Conditioning System The split air conditioner comprises of two parts: the outdoor unit and the indoor unit. The outdoor unit, fitted outside the room, houses components like the compressor, …
Introduction to DC Machine
2 Contents Overview of Direct Current Machines Construction Principle of Operation Types of DC Machine Power Flow Diagram Speed Control. 3 ... Most DC machines are similar to AC machines: i.e. they have AC voltages and current within them. ... Download ppt "Introduction to DC Machine" Similar presentations
AC Machine Fundamentals
z The rotating magnetic field BS. in an P - pole machine rotates with an angular frequency of ω m = ωe/(P/2) Therefore, the mechanical speed of the rotating magnetic field can …
Chapter 3
Full syllabus notes, lecture and questions for Chapter 3 - AC Machine - Notes, Electrical Machines, Electrical Engineering - Electrical Engineering (EE) - Electrical Engineering (EE) - Plus excerises question with solution to help you revise complete syllabus - Best notes, free PDF download
Construction of dc machines | PPT
The document describes the main construction of DC machines. It lists the two major parts as the stator, which houses the field winding, and the rotor, which rotates in the magnetic field. It then describes the other key parts which include the yoke, poles, field winding, armature winding, commutator, and brushes. ...