Starting of Induction Motors

Size: px
Start display at page:

Download "Starting of Induction Motors"

Transcription

1 1- Star Delta Starter The method achieved low starting current by first connecting the stator winding in star configuration, and then after the motor reaches a certain speed, throw switch changes the winding arrangements from star to delta configuration. By connecting the stator windings, first in star and then in delta, the line current drawn by the motor at starting is reduced to one-third as compared to starting current with the windings connected in delta. At the time of starting when the stator windings are start connected, each stator phase gets voltage V L / 3, where V L is the line voltage. Since the torque developed by an induction motor is proportional to the square of the applied voltage, star- delta starting reduced the starting torque to one-third that obtainable by direct delta starting. 1

2 2- Auto transformer starter One way to reduce the motor's terminal voltage during starting by using autotransformers to step its terminal voltage down. During starting, contacts 1 and 3 are shut, supplying a lower voltage to the motor. Once the motor is nearly up to speed, those contacts are opened and contacts 2 are shut. These contacts put full line voltage across the motor. 2

3 3- Rotor resistance starter This method of starting is only used for slip ring induction motors because in case of squirrel cage induction motors, rotor has copper bars, which are short circuited at both ends. Hence it is not possible to add any external resistance in the rotor circuit. In case of slip ring induction motors, rotor has 3-phase star connected winding whose terminals are connected to three respective slip rings. In rotor resistance starter the three terminals of the rotor winding are connected to a variable external resistances through slip rings. Full supply voltage is applied across the stator. Resistances are fully in the circuit at starting, so that the starting current is reduced. The External variable resistance connected in each phase of the rotor circuit not only reduces the current at starting but increases the starting torque also due to improvement in power factor. The rotor circuit resistance is gradually cut out, as the motor speeds up and during normal running condition, the rotor circuit resistance is completely cut out and the slip rings are short circuited. 3

4 4- Full-voltage or across-the-line magnetic induction motor starter. When the start button is pressed, the relay (or contactor) coil M is energized, causing the normally open contacts M I, Mb and M3 to shut. When these contacts shut, power is applied to the induction motor, and the motor starts. Contact M4 also shuts, which shorts out the starting switch, allowing the operator to release it without removing power from the M relay. When the stop button is pressed, the M relay is de-energized, and the M contacts open, stopping the motor. A magnetic motor starter circuit of this sort has several built-in protective features: 1. Short-circuit protection 2. Overload protection 3. Under-voltage protection 4

5 Speed Control of Induction Motors 1- Induction Motor Speed Control by Pole Changing. 2- Induction Motor Speed Control by Changing the line frequency. 3- Induction Motor Speed Control by Changing the line voltage. 4- Induction Motor Speed Control by Changing the Rotor Resistance. 5

6 6

Types of Motor Starters There are several types of motor starters. However, the two most basic types of these electrical devices are:

Types of Motor Starters There are several types of motor starters. However, the two most basic types of these electrical devices are: Introduction Motor starters are one of the major inventions for motor control applications. As the name suggests, a starter is an electrical device which controls the electrical power for starting a motor.

More information

Lecture 20: Stator Control - Stator Voltage and Frequency Control

Lecture 20: Stator Control - Stator Voltage and Frequency Control Lecture 20: Stator Control - Stator Voltage and Frequency Control Speed Control from Stator Side 1. V / f control or frequency control - Whenever three phase supply is given to three phase induction motor

More information

ESO 210 Introduction to Electrical Engineering

ESO 210 Introduction to Electrical Engineering ESO 210 Introduction to Electrical Engineering Lectures-37 Polyphase (3-phase) Induction Motor 2 Determination of Induction Machine Parameters Three tests are needed to determine the parameters in an induction

More information

EXPERIMENT 2 THREE PHASE INDUCTION MOTOR, PART 1

EXPERIMENT 2 THREE PHASE INDUCTION MOTOR, PART 1 University f Jordan School of Engineering Department of Mechatronics Engineering Electrical Machines Lab Eng. Osama Fuad Eng. Nazmi Ashour EXPERIMENT 2 THREE PHASE INDUCTION MOTOR, PART 1 OBJECTIVES To

More information

DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1

DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1 It is the mark of an educated mind to be able to entertain a thought without accepting it. DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1 1. Explain the Basic concepts of rotating machine. 2. With help

More information

EEE3441 Electrical Machines Department of Electrical Engineering. Lecture. Introduction to Electrical Machines

EEE3441 Electrical Machines Department of Electrical Engineering. Lecture. Introduction to Electrical Machines Department of Electrical Engineering Lecture Introduction to Electrical Machines 1 In this Lecture Induction motors and synchronous machines are introduced Production of rotating magnetic field Three-phase

More information

10. Starting Method for Induction Motors

10. Starting Method for Induction Motors 10. Starting Method for Induction Motors A 3-phase induction motor is theoretically self starting. The stator of an induction motor consists of 3-phase windings, which when connected to a 3-phase supply

More information

PAC TRAINING PUMP MOTORS

PAC TRAINING PUMP MOTORS PAC TRAINING PUMP MOTORS 1 Basics Magnet supported from above N S N S Since unlike poles repel each other, the magnet will rotate Stationary Magnet 2 Basics N S Stationary Magnet 3 Basics N N S S Stationary

More information

Full Voltage Starting (Number of Starts):

Full Voltage Starting (Number of Starts): Starting Method Full Voltage Starting (Number of Starts): Squirrel cage induction motors are designed to accelerate a NEMA inertia along a NEMA load curve with rated voltage applied to the motor terminals.

More information

ROTATING MAGNETIC FIELD

ROTATING MAGNETIC FIELD Chapter 5 ROTATING MAGNETIC FIELD 1 A rotating magnetic field is the key to the operation of AC motors. The magnetic field of the stator is made to rotate electrically around and around in a circle. Stator

More information

(d) None of the above.

(d) None of the above. Dr. Mahalingam College of Engineering and Technology, Pollachi-3 (An Autonomous Institution affiliated to Anna niversity) CCET II (2016 Regulation) Name of Programme: B.E. (EEE) Course Code & Course Title:

More information

9/7/2010. Chapter , The McGraw-Hill Companies, Inc. MOTOR CLASSIFICATION. 2010, The McGraw-Hill Companies, Inc.

9/7/2010. Chapter , The McGraw-Hill Companies, Inc. MOTOR CLASSIFICATION. 2010, The McGraw-Hill Companies, Inc. Chapter 2 MOTOR CLASSIFICATION 1 In general, motors are classified according to the type of power used (AC or DC) and the motor's principle of operation. AC DC Motor Family Tree 2 DC MOTOR CONNECTIONS

More information

DHANALAKSHMI COLLEGE OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING ME 6351 ELECTRICAL DRIVES AND CONTROL UNIVERSITY QUESTIONS AND ANSWERS

DHANALAKSHMI COLLEGE OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING ME 6351 ELECTRICAL DRIVES AND CONTROL UNIVERSITY QUESTIONS AND ANSWERS DHANALAKSHMI COLLEGE OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING ME 6351 ELECTRICAL DRIVES AND CONTROL UNIVERSITY QUESTIONS AND ANSWERS 1) What is the Necessity of starter? UNIT 3 Two Marks Both

More information

AC MOTOR TYPES. DESCRIBE how torque is produced in a single-phase AC motor. EXPLAIN why an AC synchronous motor does not have starting torque.

AC MOTOR TYPES. DESCRIBE how torque is produced in a single-phase AC motor. EXPLAIN why an AC synchronous motor does not have starting torque. Various types of AC motors are used for specific applications. By matching the type of motor to the appropriate application, increased equipment performance can be obtained. EO 1.5 EO 1.6 EO 1.7 EO 1.8

More information

Induction Motor Control

Induction Motor Control Induction Motor Control A much misunderstood yet vitally important facet of electrical engineering. The Induction Motor A very major consumer of electrical energy in industry today. The major source of

More information

ECET 211 Electric Machines & Controls Lecture 8 Motor Control Circuits (1 of 2) Lecture 8 Motor Control Circuits

ECET 211 Electric Machines & Controls Lecture 8 Motor Control Circuits (1 of 2) Lecture 8 Motor Control Circuits ECET 211 Electric Machines & Controls Lecture 8 Motor Control Circuits (1 of 2) Text Book: Electric Motors and Control Systems, by Frank D. Petruzella, published by McGraw Hill, 2015. Paul I-Hai Lin, Professor

More information

Stator rheostat, Autotransformer Star to Delta starter and rotor resistance starter.

Stator rheostat, Autotransformer Star to Delta starter and rotor resistance starter. UNIT-IV 1.What are the types of starters? Stator rheostat, Autotransformer Star to Delta starter and rotor resistance starter. 2. List out the methods of speed control of cage type 3-phase induction motor?

More information

SHRI ANGALAMMAN COLLEGE OF ENGINEERING AND TECHNOLOGY (An ISO 9001:2008 Certified Institution) SIRUGANOOR, TIRUCHIRAPPALLI

SHRI ANGALAMMAN COLLEGE OF ENGINEERING AND TECHNOLOGY (An ISO 9001:2008 Certified Institution) SIRUGANOOR, TIRUCHIRAPPALLI SHRI ANGALAMMAN COLLEGE OF ENGINEERING AND TECHNOLOGY (An ISO 9001:2008 Certified Institution) SIRUGANOOR, TIRUCHIRAPPALLI 621 105 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING EE1205 - ELECTRICAL

More information

A few tips on how to select contactor for use in direct on line starter

A few tips on how to select contactor for use in direct on line starter electrical-engineering-portal.com http://electrical-engineering-portal.com/contactors-direct-on-line-starters A few tips on how to select contactors for use in direct on line starters Google+ A few tips

More information

694 Electric Machines

694 Electric Machines 694 Electric Machines 9.1 A 4-pole wound-rotor induction motor is used as a frequency changer. The stator is connected to a 50 Hz, 3-phase supply. The load is connected to the rotor slip rings. What are

More information

R07 SET - 1

R07 SET - 1 R07 SET - 1 II B. Tech II Semester Supplementary Examinations April/May 2013 ELECTRICAL MACHINES - II (Electrical and Electronics Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE Questions All

More information

INDUCTION MOTOR. There is no physical electrical connection to the secondary winding, its current is induced

INDUCTION MOTOR. There is no physical electrical connection to the secondary winding, its current is induced INDUCTION MOTOR INTRODUCTION An induction motor is an alternating current motor in which the primary winding on one member (usually the stator) is connected to the power source and a secondary winding

More information

Date: Name: ID: LABORATORY EXPERIMENT NO. 8 INDUCTION MOTOR/GENERATOR 8-1

Date: Name: ID: LABORATORY EXPERIMENT NO. 8 INDUCTION MOTOR/GENERATOR 8-1 Date: Name: ID: LABORATORY EXPERIMENT NO. 8 INDUCTION MOTOR/GENERATOR 8-1 OBJECT 1. To determine the general performance of a squirrel motors 2. To observe the characteristics of induction generators.

More information

EE6351 ELECTRIC DRIVES AND CONTROL UNIT-1 INTRODUTION

EE6351 ELECTRIC DRIVES AND CONTROL UNIT-1 INTRODUTION EE6351 ELECTRIC DRIVES AND CONTROL UNIT-1 INTRODUTION 1. What is meant by drive and electric drive? Machines employed for motion control are called drives and may employ any one of the prime movers for

More information

VALLIAMMAI ENGINEERING COLLEGE MECHANICAL ENGINEERING ANNA UNIVERSITY CHENNAI II YEAR MECH / III SEMESTER EE6351 - ELECTRICAL DRIVES AND CONTROL (REGULATION 2013) UNIT I INTRODUCTION PART-A (2 MARKS) 1.

More information

UNIT-I ALTERNATORS PART-A

UNIT-I ALTERNATORS PART-A UNIT-I ALTERNATORS 1. What principle is used in Alternators? 2. What are the requirements of an alternator? 3. Mention the types of alternator rotor. 4. What is hunting in alternators? 5. What are the

More information

Regulation: R16 Course & Branch: B.Tech EEE

Regulation: R16 Course & Branch: B.Tech EEE SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (Descriptive) Subject with Code : Electrical Machines-II (16EE215) Regulation: R16 Course & Branch: B.Tech

More information

Just what is an alternator?

Just what is an alternator? Just what is an alternator? An alternator is the device used to produce the electricity the car needs to run and to keep the battery charged. The battery is the heart of your electrical system. But you

More information

FATIMA MICHAEL COLLEGE OF ENGINEERING & TECHNOLOGY Senkottai Village, Madurai Sivagangai Main Road, Madurai

FATIMA MICHAEL COLLEGE OF ENGINEERING & TECHNOLOGY Senkottai Village, Madurai Sivagangai Main Road, Madurai Department of Mechanical Engineering QUESTION BANK SUBJECT NAME: ELECTRICAL DRIVES AND CONTROL YEAR / SEM: II / III UNIT I INTRODUCTION PART-A (2 MARKS) 1. Define Drives 2. Define Electric Drives. 3. What

More information

Dev Bhoomi Institute Of Technology LABORATORY Department of Electrical And Electronics Engg. Electro-mechanical Energy Conversion II

Dev Bhoomi Institute Of Technology LABORATORY Department of Electrical And Electronics Engg. Electro-mechanical Energy Conversion II REV. NO. : REV. DATE : PAGE: 1 Electro-mechanical Energy Conversion II 1. To perform no load and blocked rotor tests on a three phase squirrel cage induction motor and determine equivalent circuit. 2.

More information

Question Number: 1. (a)

Question Number: 1. (a) Session: Summer 2008 Page: 1of 8 Question Number: 1 (a) A single winding machine cannot generate starting torque. During starting the switch connects the starting winding via the capacitor. The capacitor

More information

Electrical Machines-I (EE-241) For S.E (EE)

Electrical Machines-I (EE-241) For S.E (EE) PRACTICAL WORK BOOK For Academic Session 2013 Electrical Machines-I (EE-241) For S.E (EE) Name: Roll Number: Class: Batch: Department : Semester/Term: NED University of Engineer ing & Technology Electrical

More information

ADS7 AC Contactor Starters

ADS7 AC Contactor Starters ADS7 AC Contactor Starters ADS7 starters fully comply with BS EN 60947-4-1, IEC 60947-4-1 and VDE 0660. The range offers a multitude of configurations and optional features including a complete choice

More information

Contents. Review of Electric Circuitd. Preface ;

Contents. Review of Electric Circuitd. Preface ; Preface ; Chapter 1 Review of Electric Circuitd 1.1 Introduction, 1 1.2 Direct Circuit Current, 1 1.2.1 Voltage, 3 1.2.2 Power, 3 1.2.3 Ohm's Law, 5 1.2.4 KirchhofTs Laws, 5 1.2.4.1 Kirchhoff s Current

More information

Chapter 8. Understanding the rules detailed in the National Electrical Code is critical to the proper installation of motor control circuits.

Chapter 8. Understanding the rules detailed in the National Electrical Code is critical to the proper installation of motor control circuits. Chapter 8 Understanding the rules detailed in the National Electrical Code is critical to the proper installation of motor control circuits. Article 430 of the NEC covers application and installation of

More information

ECET 211 Electric Machines & Controls Lecture 2-2 (Part 2 of 3) Symbols and Drawing for Electric Motor Control Systems

ECET 211 Electric Machines & Controls Lecture 2-2 (Part 2 of 3) Symbols and Drawing for Electric Motor Control Systems ECET 211 Electric Machines & Controls Lecture 2-2 (Part 2 of 3) Symbols and Drawing for Electric Motor Control Systems Text Book: Chapter 2. Understanding Electrical Drawings, Electric Motors and Control

More information

SECTION 4 ELECTRIC MOTORS UNIT 17: TYPES OF ELECTRIC MOTORS UNIT OBJECTIVES UNIT OBJECTIVES 3/21/2012

SECTION 4 ELECTRIC MOTORS UNIT 17: TYPES OF ELECTRIC MOTORS UNIT OBJECTIVES UNIT OBJECTIVES 3/21/2012 SECTION 4 ELECTRIC MOTORS UNIT 17: TYPES OF ELECTRIC MOTORS UNIT OBJECTIVES After studying this unit, the reader should be able to Describe the different types of open single-phase motors used to drive

More information

Starters. Overview. Siemens caters with following types of starters to agricultural and industrial sector.

Starters. Overview. Siemens caters with following types of starters to agricultural and industrial sector. Starters Overview Siemens caters with following types of starters to agricultural and industrial sector. 55 Application The main purpose of motor starters is to start the electrical motor by switching

More information

Pretest Module 21 Units 1-3 AC Generators & Three-Phase Motors

Pretest Module 21 Units 1-3 AC Generators & Three-Phase Motors Pretest Module 21 Units 1-3 AC Generators & Three-Phase Motors 1. What are the two main parts of a three-phase 2. Which part of a three-phase squirrel-cage induction motor is a hollow core? 3. What are

More information

Electrical Control System Components Basics of Magnetic Control :

Electrical Control System Components Basics of Magnetic Control : Electrical Control System Components Basics of Magnetic Control : Dr.M.S.Narkhede, LEE, GP Mumbai 1 Contact Types : Contacts are classified into different ways as follows. According to applications contacts

More information

A Novel Technique for Energy & Cost Effective Drives for AC & DC Motors

A Novel Technique for Energy & Cost Effective Drives for AC & DC Motors International Journal of Electrical Engineering. ISSN 0974-2158 Volume 3, Number 3 (2010), pp. 241--250 International Research Publication House http://www.irphouse.com A Novel Technique for Energy & Cost

More information

ELECTRICAL MACHINES. Theory and Practice. M.N. Bandyopadhyay

ELECTRICAL MACHINES. Theory and Practice. M.N. Bandyopadhyay ELECTRICAL MACHINES Theory and Practice M.N. Bandyopadhyay ELECTRICAL MACHINES Theory and Practice M.N. Bandyopadhyay Director National Institute of Technology Kurukshetra Delhi-110092 2014 ELECTRICAL

More information

Motor Protection Fundamentals. Motor Protection - Agenda

Motor Protection Fundamentals. Motor Protection - Agenda Motor Protection Fundamentals IEEE SF Power and Energy Society May 29, 2015 Ali Kazemi, PE Regional Technical Manager Schweitzer Engineering Laboratories Irvine, CA Copyright SEL 2015 Motor Protection

More information

Pretest Module 21 Units 1-4 AC Generators & Three-Phase Motors

Pretest Module 21 Units 1-4 AC Generators & Three-Phase Motors Pretest Module 21 Units 1-4 AC Generators & Three-Phase Motors 1. What are the two main parts of a three-phase motor? Stator and Rotor 2. Which part of a three-phase squirrel-cage induction motor is a

More information

SECTION MOTORS & MOTOR CONTROLLERS

SECTION MOTORS & MOTOR CONTROLLERS SECTION 15170 MOTORS & MOTOR CONTROLLERS PART 1 GENERAL 1.01 SECTION INCLUDES A. Electric motors. B. Motor controllers for Packaged equipment. 1.02 SUBMITTALS A. Wiring diagrams with electrical characteristics

More information

Principles of iers (intelligent

Principles of iers (intelligent Principles of iers (intelligent Energy Recovery System) Chapter 4 Table of Contents............... 4 1 Principles of the iers....................................... 4 2 Enabling Intelligent Energy Recovery

More information

Single Phase Induction Motors

Single Phase Induction Motors Single Phase Induction Motors Prof. T. H. Panchal Asst. Professor Department of Electrical Engineering Institute of Technology Nirma University, Ahmedabad Introduction As the name suggests, these motors

More information

Single Phase Induction Motor. Dr. Sanjay Jain Department Of EE/EX

Single Phase Induction Motor. Dr. Sanjay Jain Department Of EE/EX Single Phase Induction Motor Dr. Sanjay Jain Department Of EE/EX Application :- The single-phase induction machine is the most frequently used motor for refrigerators, washing machines, clocks, drills,

More information

1-3 MANUAL STARTERS EXERCISE OBJECTIVE. Examine and describe the operation of manual motor starters. DISCUSSION

1-3 MANUAL STARTERS EXERCISE OBJECTIVE. Examine and describe the operation of manual motor starters. DISCUSSION 1-3 MANUAL STARTERS EXERCISE OBJECTIVE Examine and describe the operation of manual motor starters. DISCUSSION Motor starters are made out of power switches and overload protection devices. They can be

More information

SPEED CONTROL OF SINGLE PHASE INDUCTION MOTOR E-PUB

SPEED CONTROL OF SINGLE PHASE INDUCTION MOTOR E-PUB 08 December, 2018 SPEED CONTROL OF SINGLE PHASE INDUCTION MOTOR E-PUB Document Filetype: PDF 346.33 KB 0 SPEED CONTROL OF SINGLE PHASE INDUCTION MOTOR E-PUB Having scoured the internet for an answer to

More information

Direct On Line (DOL) Motor Starter. Direct Online Motor Starter

Direct On Line (DOL) Motor Starter. Direct Online Motor Starter Direct On Line (DOL) Motor Starter Direct Online Motor Starter Different starting methods are employed for starting induction motors because Induction Motor draws more starting current during starting.

More information

ELECTRICAL MAINTENANCE

ELECTRICAL MAINTENANCE ELECTRICAL MAINTENANCE II PRACTICAL JOURNAL DATA 1 EXPERIMENT NO. 1 AIM: TO FIND VOLTAGE RATIO OF A GIVEN TRANSFORMER. CIRCUIT DIAGRAM: OBSERVATION TABLE: Sr.No. 1 2 3 4 Primary Voltage (V 1 ) Secondary

More information

Unit 34 Single-Phase Motors

Unit 34 Single-Phase Motors Unit 34 Single-Phase Motors Objectives: Unit 34 Single-Phase Motors List the different types of split-phase motors. Discuss the operation of split-phase motors. Reverse the direction of rotation of a splitphase

More information

Most home and business appliances operate on single-phase AC power. For this reason, singlephase AC motors are in widespread use.

Most home and business appliances operate on single-phase AC power. For this reason, singlephase AC motors are in widespread use. Chapter 5 Most home and business appliances operate on single-phase AC power. For this reason, singlephase AC motors are in widespread use. A single-phase induction motor is larger in size, for the same

More information

GROUP OF INSTITUTIONS :: PUTTUR UNIT I SINGLE PHASE TRANSFORMERS

GROUP OF INSTITUTIONS :: PUTTUR UNIT I SINGLE PHASE TRANSFORMERS SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (Descriptive) Subject with Code : Electrical Machines-II (16EE215) Course & Branch: B.Tech EEE Regulation:

More information

Electrical Drives I. Week 11: Three phase Induction Motor Starting

Electrical Drives I. Week 11: Three phase Induction Motor Starting Electrical Drives I Week 11: Three phase Induction otor Starting Starting Problem Definition: ' I r Rs Vs 2 R ' r S 2 Xeq At S=0 and S=1, thus the current can be determined as: ' I r st Vs 2 ' Rs Rr Xeq

More information

ELECTRIC MACHINES OPENLAB 0.2 kw

ELECTRIC MACHINES OPENLAB 0.2 kw THIS SYSTEM IS A COMPLETE SET OF COMPONENTS AND MODULES SUITABLE FOR ASSEMBLING THE ROTATING ELECTRIC MACHINES, BOTH FOR DIRECT CURRENT AND FOR ALTERNATING CURRENT. STUDENTS CAN PERFORM A CRITICAL AND

More information

Induction machine characteristics and operation. Induction Machines

Induction machine characteristics and operation. Induction Machines Induction Machines 1.1 Introduction: An essential feature of the operation of the synchronous machine is that the rotor runs at the same speed as the rotating magnetic field produced by the stator winding.

More information

DHANALAKSHMI COLLEGE OF ENGINEERING MANIMANGALAM. TAMBARAM, CHENNAI B.E. ELECTRICAL AND ELECTRONICS ENGINEERING

DHANALAKSHMI COLLEGE OF ENGINEERING MANIMANGALAM. TAMBARAM, CHENNAI B.E. ELECTRICAL AND ELECTRONICS ENGINEERING DHANALAKSHMI COLLEGE OF ENGINEERING MANIMANGALAM. TAMBARAM, CHENNAI B.E. ELECTRICAL AND ELECTRONICS ENGINEERING V SEMESTER EE2305 ELECTRICAL MACHINES II LABORATORY LABORATORY MANUAL 1 CONTENT S. No. Name

More information

Types of Electric Motors

Types of Electric Motors Types of Electric Motors Electric Motors DC Motors AC Motors Other Motors Shunt motor Separately Excited motor Induction motor Stepper motor Brushless DC motor Series Motor Permanent Magnet DC (PMDC) Synchronous

More information

TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK

TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK 28 March, 2018 TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK Document Filetype: PDF 275.98 KB 0 TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK So this is the reason of using capacitor in the single phase induction

More information

2014 ELECTRICAL TECHNOLOGY

2014 ELECTRICAL TECHNOLOGY SET - 1 II B. Tech I Semester Regular Examinations, March 2014 ELECTRICAL TECHNOLOGY (Com. to ECE, EIE, BME) Time: 3 hours Max. Marks: 75 Answer any FIVE Questions All Questions carry Equal Marks ~~~~~~~~~~~~~~~~~~~~~~~~~~

More information

The Wound-Rotor Induction Motor Part I

The Wound-Rotor Induction Motor Part I Experiment 1 The Wound-Rotor Induction Motor Part I OBJECTIVE To examine the construction of the three-phase wound-rotor induction motor. To understand exciting current, synchronous speed and slip in a

More information

CHAPTER 7 INDUCTION MOTOR

CHAPTER 7 INDUCTION MOTOR CHAPTE 7 INDUCTION MOTO Summary: 1. Induction Motor Construction. Basic Induction Motor Concepts - The Development of Induced Torque in an Induction Motor. - The Concept of otor Slip. - The Electrical

More information

Electrical Motor Controls Chapter 4 (Fourth Edition) Chapter 2 (Fifth Edition)

Electrical Motor Controls Chapter 4 (Fourth Edition) Chapter 2 (Fifth Edition) Electrical Motor Controls Chapter 4 (Fourth Edition) Chapter 2 (Fifth Edition) 1. Which drawing type shows physical details as seen by the eye? 2. Which drawing is similar to a pictorial drawing but has

More information

Exercise 1-3. Manual Starters EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. Direct-on-line (DOL) starters. Reversing starters

Exercise 1-3. Manual Starters EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. Direct-on-line (DOL) starters. Reversing starters Exercise 1-3 Manual Starters EXERCISE OBJECTIVE Examine and describe the operation of manual motor starters. DISCUSSION OUTLINE The Discussion of this exercise covers the following points: Direct-on-line

More information

Scheme - I. Sample Question Paper

Scheme - I. Sample Question Paper Program Name Program Code Course Title Sample Question Paper : Diploma in Industrial Electronics : IE : Electrical Machines and Transformers Max. Marks : 70 Time : 3 Hrs. Q1. ATTEMPT ANY FIVE OF THE FOLLOWING.

More information

Unit III-Three Phase Induction Motor:

Unit III-Three Phase Induction Motor: INTRODUCTION Unit III-Three Phase Induction Motor: The three phase induction motor runs on three phase AC supply. It is an ac motor. The power is transferred by means of induction. So it is also called

More information

ECET Industrial Motor Control. NEMA Ratings. National Electrical Manufacturers Association

ECET Industrial Motor Control. NEMA Ratings. National Electrical Manufacturers Association ECET 4530 Industrial Motor Control NEMA Ratings National Electrical Manufacturers Association NEMA * Trade association whose 400+ member companies manufacture products used in the generation, transmission,

More information

SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR

SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (DESCRIPTIVE) Subject with Code : ET(16EE212) Year & Sem: II-B.Tech & II-Sem UNIT I DC GENERATORS Course

More information

Electrical Machines II. Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit

Electrical Machines II. Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit Electrical Machines II Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit Asynchronous (Induction) Motor: industrial construction Two types of induction

More information

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK 16EET41 SYNCHRONOUS AND INDUCTION MACHINES UNIT I SYNCHRONOUS GENERATOR 1. Why the stator core is laminated? 2. Define voltage regulation

More information

Handout Activity: HA773

Handout Activity: HA773 Charging system HA773-2 Handout Activity: HA773 Charging system The charging system allows for a means to recharge the battery and allow for electrical usage of components in the vehicle. The charging

More information

PDF / THREE PHASE INDUCTION MOTOR PPT DOCUMENT

PDF / THREE PHASE INDUCTION MOTOR PPT DOCUMENT 21 November, 2017 PDF / THREE PHASE INDUCTION MOTOR PPT DOCUMENT Document Filetype: PDF 420.68 KB 0 PDF / THREE PHASE INDUCTION MOTOR PPT DOCUMENT What is crawling phenomena in induction motor? Learn a

More information

ECET 211 Electric Machines & Controls Lecture 5-1 Electric Motors. Lecture 5-1 Electric Motors

ECET 211 Electric Machines & Controls Lecture 5-1 Electric Motors. Lecture 5-1 Electric Motors ECET 211 Electric Machines & Controls Lecture 5-1 Electric Motors (2 of 4) Text Book: Chapter 5 Electric Motors, Electric Motors and Control Systems, by Frank D. Petruzella, published by McGraw Hill, 2015.

More information

ROTOR RESISTANCE SPEED CONTROL OF WOUND ROTOR INDUCTION MOTOR

ROTOR RESISTANCE SPEED CONTROL OF WOUND ROTOR INDUCTION MOTOR 1 Electrical Machines Lab Experiment-No. ROTOR RESISTANCE SPEED CONTROL OF WOUND ROTOR INDUCTION MOTOR AIM: To vary the speed of the wound rotor induction motor using rotor rheostat control. Theory The

More information

R13 SET - 1. b) Describe different braking methods employed for electrical motors. [8M]

R13 SET - 1. b) Describe different braking methods employed for electrical motors. [8M] Code No:RT32026 R13 SET - 1 III B. Tech II Semester Regular Examinations, April - 2016 POWER SEMICONDUCTOR DRIVES (Electrical and Electronics Engineering) Time: 3 hours Maximum Marks: 70 Note: 1. Question

More information

Overview. Contents. Overview

Overview. Contents. Overview 1/0 Overview 1 Contents Overview 3-pole Block Contactors and Motor Protection... 1/ 4-pole Block Contactors... 1/3 Contactors for Specific Applications... 1/4 Mini Contactors and Motor Protection... 1/

More information

DRAFT 1400HP 1000HP 100HP. Reduced Voltage Solid State Starters. Softstarters SOFT. PF Controller PCS Controller PDS Controller V 1...

DRAFT 1400HP 1000HP 100HP. Reduced Voltage Solid State Starters. Softstarters SOFT. PF Controller PCS Controller PDS Controller V 1... 100HP 400HP 700HP 1000HP 1400HP PCS Softstarter Controller IN-rail mountable microprocessor controller for 3-phase motors up to 480A (3...85A din-rail mountable) Provides three different starting modes

More information

Electrical Machines -II

Electrical Machines -II Objective Type Questions: 1. Basically induction machine was invented by (a) Thomas Alva Edison (b) Fleming (c) Nikola Tesla (d) Michel Faraday Electrical Machines -II 2. What will be the amplitude and

More information

FLAT LINEAR INDUCTION PUMPS

FLAT LINEAR INDUCTION PUMPS Creative Engineers, Inc. PO Box 206 Phoenix MD 21131 www.creativeengineers.com Phone (443) 807-1202 Fax (410) 683-9707 info@creativeengineers.com FLAT LINEAR INDUCTION PUMPS www.creativeengineers.com Creative

More information

The Planetary Motor Design and control of a novel multi-rotor structure

The Planetary Motor Design and control of a novel multi-rotor structure Design and control of a novel multi-rotor structure Manfred Schrödl Andreas Brunner Institute of Energy Systems and Electrical Drives Technische Universität Wien A3PS Nov. 2017 Contents Deriving the topology

More information

SIMULINK Based Model for Determination of Different Design Parameters of a Three Phase Delta Connected Squirrel Cage Induction Motor

SIMULINK Based Model for Determination of Different Design Parameters of a Three Phase Delta Connected Squirrel Cage Induction Motor IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 2320-3331, Volume 7, Issue 4 (Sep. - Oct. 2013), PP 25-32 SIMULINK Based Model for Determination of Different

More information

Circuit Diagram For Speed Control Of Slip Ring Induction Motor

Circuit Diagram For Speed Control Of Slip Ring Induction Motor Circuit Diagram For Speed Control Of Slip Ring Induction Motor A wound-rotor motor is a type of induction motor where the rotor windings are Compared to a squirrel-cage rotor, the rotor of the slip ring

More information

Department of Electrical and Computer Engineering

Department of Electrical and Computer Engineering Page 1 of 1 Faculty of Engineering, Architecture and Science Department of Electrical and Computer Engineering Course Number EES 612 Course Title Electrical Machines and Actuators Semester/Year Instructor

More information

MOTOR TERMINAL CONNECTIONS

MOTOR TERMINAL CONNECTIONS MOTOR TERMINAL CONNECTIONS Motor Classification Most of the industrial machines in use today are driven by electric motors Motors are classified according to the type of power used (AC or DC) and the motors

More information

CONTROL SYSTEM HOW-TO GUIDE. Synchro Transmitter and Receiver

CONTROL SYSTEM HOW-TO GUIDE. Synchro Transmitter and Receiver CONTROL SYSTEM HOW-TO GUIDE Synchro Transmitter and Receiver Contents CONTROL SYSTEM HOW-TO GUIDE... 1 Synchro Transmitter and Receiver... 1 SYNCHRO TRANSMITTER / RECEIVER... 3 INTRODUCTION... 3 SPECIFICATIONS...

More information

Three-Phase Induction Motor With Frequency Inverter

Three-Phase Induction Motor With Frequency Inverter Objectives Experiment 9 Three-Phase Induction Motor With Frequency Inverter To be familiar with the 3-phase induction motor different configuration. To control the speed of the motor using a frequency

More information

Starting Systems & Traction Motor Systems. ATASA 5 th. ATASA 5 TH Study Guide Chapter 18 Pages Starting & Traction Motor Systems 62 Points

Starting Systems & Traction Motor Systems. ATASA 5 th. ATASA 5 TH Study Guide Chapter 18 Pages Starting & Traction Motor Systems 62 Points ATASA 5 TH Study Guide Chapter 18 Pages 537 570 Starting & Traction Motor Systems 62 Points Please Read The Summary 1. Electric are used to start the engine & in hybrids are used to move the vehicle. Motors

More information

TECHNICAL SPECIFICATION

TECHNICAL SPECIFICATION TECHNICAL SPECIFICATION Star/delta starter Description: The electromagnetic starters LT 3 Dxx series are devices designed for remote control, direct control and protection of induction motors coiled and

More information

Lab Electrical Power Engineering I

Lab Electrical Power Engineering I INSTITUT FÜR ELEKTRISCHE MASCHINEN RHEINISCH-WESTFÄLISCHE TECHNISCHE HOCHSCHULE AACHEN Lab Electrical Power Engineering I Test 3: Induction machine with squirrel cage rotor and slip ring rotor 1 Experiment

More information

St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad

St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad-500 014 Subject: STATIC DRIVES Class : EEE III TUTORIAL QUESTION BANK Group I QUESTION BANK ON SHORT ANSWER QUESTION UNIT-I 1 What is meant by electrical

More information

2. Draw the speed-torque characteristics of dc shunt motor and series motor. (May2013) (May 2014)

2. Draw the speed-torque characteristics of dc shunt motor and series motor. (May2013) (May 2014) UNIT 2 - DRIVE MOTOR CHARACTERISTICS PART A 1. What is meant by mechanical characteristics? A curve is drawn between speed-torque. This characteristic is called mechanical characteristics. 2. Draw the

More information

Part- A Objective Questions (10X1=10 Marks)

Part- A Objective Questions (10X1=10 Marks) Dr. Mahalingam College of Engineering and Technology, Pollachi-3 (An Autonomous Institution) CCET 3(2016Regulation) Name of Programme: B.E. (EEE) Course Code&Course Title: 16EET41 & Synchronous & Induction

More information

ECE 325 Electric Energy System Components 6 Three Phase Induction Motors. Instructor: Kai Sun Fall 2016

ECE 325 Electric Energy System Components 6 Three Phase Induction Motors. Instructor: Kai Sun Fall 2016 ECE 325 Electric Energy System Components 6 Three Phase Induction Motors Instructor: Kai Sun Fall 2016 1 Content (Materials are from Chapters 13-15) Components and basic principles Selection and application

More information

EE 742 Chap. 7: Wind Power Generation. Y. Baghzouz Fall 2011

EE 742 Chap. 7: Wind Power Generation. Y. Baghzouz Fall 2011 EE 742 Chap. 7: Wind Power Generation Y. Baghzouz Fall 2011 Overview Environmental pressures have led many countries to set ambitious goals of renewable energy generation. Wind energy is the dominant renewable

More information

Institute of Technology, Nirma University B. Tech. Sem. V: Electrical Engineering 2EE305: ELECTRICAL MACHINES II. Handout: AC Commutator Motors

Institute of Technology, Nirma University B. Tech. Sem. V: Electrical Engineering 2EE305: ELECTRICAL MACHINES II. Handout: AC Commutator Motors Institute of Technology, Nirma University B. Tech. Sem. V: Electrical Engineering 2EE305: ELECTRICAL MACHINES II Handout: AC Commutator Motors Prepared by: Prof. T. H. Panchal Learning Objective: Introduction

More information

APGENCO/APTRANSCO Assistant Engineer Electrical Previous Question Papers Q.1 The two windings of a transformer is conductively linked. inductively linked. not linked at all. electrically linked. Q.2 A

More information

AUCOM WHITE PAPER SERIES GET YOUR MOTOR RUNNING. An introduction to reduced voltage starting of three phase induction motors

AUCOM WHITE PAPER SERIES GET YOUR MOTOR RUNNING. An introduction to reduced voltage starting of three phase induction motors AUCOM WHITE PAPER SERIES GET YOUR MOTOR RUNNING An introduction to reduced voltage starting of three phase induction motors GET YOUR MOTOR RUNNING WHITE PAPER #1 Reduced voltage starting of three phase

More information

C627, C628, C631, C656, C657, C658, C671 and C680 Alternator Troubleshooting Guide

C627, C628, C631, C656, C657, C658, C671 and C680 Alternator Troubleshooting Guide C627, C628, C631, C656, C657, C658, C671 and C680 Alternator Troubleshooting Guide Hazard Definitions These terms are used to bring attention to presence of hazards of various risk levels or to important

More information