CHAPTER 5 SIMULATION AND TEST SETUP FOR FAULT ANALYSIS

Size: px
Start display at page:

Transcription

1 47 CHAPTER 5 SIMULATION AND TEST SETUP FOR FAULT ANALYSIS 5.1 INTRODUCTION This chapter describes the simulation model and experimental set up used for the fault analysis. For the simulation set up, the d-q model proposed by Park is taken into consideration. In this thesis, the induction motor is modeled using the modules in the power system tool box of MATLAB-Simulink. Mechanical load is modeled so that the load torque can be varied externally. The module is integrated with the system using the S- Function provided by SIMULINK. Important simulated data are sent to the workspace of MATLAB for analysis. Test set up for fault analysis is created using the test bench available in the laboratory. In the present study, fault was artificially introduced in the laboratory to new healthy motors. Specimen used was three phase and four pole induction motor commercially available. Rated voltage, current and output of the motor are 400 V, 4.6 A and 2.2 kw respectively. The number of rotations is 1440 rpm. The number of slots in the stator is 36. Two stator windings are connected in parallel for each phase. Windings of three phases are in delta connection. 45 coils are inserted in a slot.

2 DETERMINATION OF EQUIVALENT CIRCUIT PARAMETERS The parameters for the equivalent circuit are determined from no load test, DC test and blocked rotor test. During the DC test, a dc voltage is applied across two terminals while machine is at standstill. Thus, r s Vdc 1 I 2 dc (5.1) where V dc - Input dc voltage applied I dc - DC current obtained from DC test The power input during no load test is sum of the stator ohmic losses, the core losses due to hysteresis and eddy current losses, rotational losses due to friction and windage. The stator ohmic losses are, P ohmic = 3 I 2 nl r s (5.2) where I nl - No load phase current r s - Stator resistance losses are Therefore the power loss due to friction and windage losses and core P fwc = P nl P ohmic (5.3) where P nl - No load power P ohmic - Ohmic losses

3 49 The no load impedance is highly inductive and its magnitude is assumed to be sum of the stator leakage reactance and the magnetizing reactance. Thus, X ls X m Vnl I nl (5.4) During the blocked rotor test, the rotor is locked by some external means and balanced three phase stator voltages are applied. The frequency of the applied voltage is often less than rated value. From this test, P br = 3 I 2 br (r s + r r ) (5.5) From which r r P 3 I br 2 br r s (5.6) where P br - Blocked rotor power r r - Rotor resistance The magnitude of the blocked rotor input impedance is Z br Vbr I br (5.7) Now, f (r r ) j (X X ) Z br s r ls lr br fnl (5.8) where f br = Frequency during blocked rotor test f nl = Frequency during no load test

4 50 X ls = Stator leakage reactance X lr = Rotor leakage reactance From the above equation the values of X ls and X lr are calculated. Generally X ls and X lr are assumed equal. All the three tests, DC test, no load test and block rotor test are conducted for 3 hp, 4 pole, 400 volts, 3-phase, 50 Hz and 1440 rpm induction machine. Table 5.1 shows equivalent circuit parameters for dynamic model of induction machine. Table 5.1 Induction motor parameters S.No Motor Variables Value (pu) 1 Stator Resistance (r s ) Rotor Resistance (r r ) Mutual Inductance (Xm) Stator Leakage Reactance (X ls ) Rotor Leakage Reactance (X lr ) IMPLEMENTATION OF DYNAMIC MODEL IN MATLAB SIMULINK ENVIRONMENT Simulink is a tool in MATLAB used to simulate dynamic systems. The Sim Power System is one of the toolbox of Simulink, which is used to analyze steady state and transient response of the electrical and power systems like AC motors and transformers. In this thesis, sim power system toolbox is used to analyze the three phase induction motor performance under different electrical fault conditions. The solver used for simulation of induction motor performance is ODE113. This is a multi step and variable order solver. It is recommended when function evaluation is time consuming and tolerance is tight.

5 51 Overall dynamic model of the three phase induction motor is implemented in MATLAB - Simulink environment as shown in Figure 5.1. The inputs of a squirrel cage induction motor are the three phase voltages (Va, Vb and Vc), their fundamental frequency and load torque. The outputs are stator currents, rotor currents, stator d-q currents, rotor d-q currents, electrical torque and rotor speed (rpm). The d-q model requires that all the three-phase variables have to be transformed to the two phase synchronously rotating frame. Consequently, the induction motor model has blocks transforming the three phase voltages to d-q frame and d-q currents back to three phases. Figure 5.1 Overall dynamic model of three phase induction motor

6 52 The induction motor model shown in Figure 5.1 consists of following major subsystems: i) Subsystem 1 - Three phase to two phase variables conversion (stator) ii) Subsystem 2 - Three phase to two phase variables conversion (rotor) iii) Subsystem 3 and 4 - Implementation of dynamic modeling equations iv) Subsystem T e and r - Implementation of torque and speed equations v) Subsystem I abcs - Two phase to three phase conversion (stator) vi) Subsystem I abcr - Two phase to three phase conversion (rotor) The subsystem1 describes the change of variables which formulates transformation of three phase voltage variables of stationary elements to the arbitrary reference frame. It may be expressed as, V qdos = K s V abcs (5.9) where [V qdos ] T = [ V qs V ds v os ] [V abcs ] T = [V as V bs V cs ] K s is transformation factor Cos Cos ( 2 / 3) Cos ( 2 / 3) 2 Ks Sin Sin ( 2 / 3) Sin ( 2 / 3) 3 ½ ½ ½

7 53 The equation (5.9) represents the transformation of three phase variable into two phase variables in stator side. Figure 5.2 implements three to two phase variables conversion in the stator. Figure 5.2 Three phase to two phase variables conversion (stator) Similarly, V qdor = K r V abcr (5.10) where [V qdor ] T = [ V qr V dr V or ] [V abcr ] T = [V ar V br V cr ] K r is transformation factor Cos Cos ( 2 / 3) Cos ( 2 / 3) 2 Kr Sin Sin ( 2 / 3) Sin ( 2 / 3) 3 ½ ½ ½ The equation (5.10) represents the transformation of three phase variables into two phase variables in rotor side. Figure 5.3 implements three to two phase variables conversion in rotor. The subsystem 3 and subsystem 4

8 54 represented by the equations from 4.10 to 4.18 are implemented in Simulink platform as shown from Figure 5.4 to Figure 5.9. Figure 5.3 Three phase to two phase variables conversion (rotor) Figure 5.4 Mutual inductance calculation in terms of D-Q components

9 55 Figure 5.5 Implementation of dynamic modeling equations Figure 5.6 Implementation of overall flux equations in terms of D-Q form

10 56 (a) Subsystem 411 (b) Subsystem 412 Figure 5.7 Implementation of stator flux equations in terms of D-Q form

11 57 (a) Subsystem 413 (b) Subsystem 414 Figure 5.8 Implementation of rotor flux equations in terms of D-Q form Figure 5.9 Implementation of stator and rotor currents (D-Q Form)

12 58 The subsystem T e and (4.11) are implemented as shown in Figure r represented by the equations (4.20) and d r P dt (2 J) (T T ) e L (5.11) where P - number of Poles J - Moment of inertia T e - Electrical output Torque T L - Load Torque r - Rotor angular electrical speed The subsystem I abcs describes the conversion of two phase (D-Q) variable into three phase variables (ABC) in stator side. It may be expressed as, I abcs = K -1 S I qdos where [I qdos ] T = [I qs I ds I os ] [I abcs ] T = [I as I bs I cs ] K -1 S is Inverse transformation factor 1 s Cos Sin ( 2 / 3) 1 K Cos( 2 / 3) Sin ( 2 / 3) 1 Cos( 2 / 3 Sin ( 2 / 3) 1 The equation (5.12) represents the transformation of two phase variables into three phase variables in stator side and is implemented in Figure 5.11.

13 59 Figure 5.10 Implementation of speed and torque equations Figure 5.11 Two phase to three phase variables conversion (stator) The subsystem I abcr describes the conversion two phase (D-Q) variable into three phase variables (ABC) in rotor side. It may be expressed as, I abcr = K -1 r I qdor (5.13) where [I qdor ] T = [I qr I dr I or ] [I abcr ] T = [I ar I br I cr ] K -1 r is Inverse Transformation factor 1 r Cos Sin ( 2 / 3) 1 K Cos( 2 / 3) Sin ( 2 / 3) 1 Cos( 2 / 3 Sin ( 2 / 3) 1

14 60 The equation (5.13) represents the transformation of two phase variables into three phase variables in rotor side and is implemented in Figure Figure 5.12 Two phase to three phase variables conversion (rotor) 5.4 SIMULATION OF ELECTRICAL FAULTS The modeling of three-phase symmetrical induction motor is developed in MATLAB-Simulink environment as explained above. By using Simulink model of three phase induction motor, electrical faults such as single phasing, voltage unbalance, current unbalance, over voltage, under voltage, overload, earth fault and power frequency variations are all simulated. Performance of induction motor during the above electrical faults with various load conditions (no load, 25%, 50%, 75%, 100% and 125% of rated full load) is obtained from simulation. Simulation criteria for electrical faults are as follows: i) Over load: Anyone of phase current is greater than the rated value. It is allowed to run over certain time till the overload fault happens.

15 61 ii) iii) iv) Single phasing: Anyone of the phase is cut down or anyone of the phase voltage is zero. Voltage unbalance: By providing different magnitude of voltages in all the three phases of supply. Under voltage: Providing phase voltage less than the rated voltage. v) Over voltage: Providing phase voltage greater than the rated value. vi) vii) viii) Earth fault: Creating leakage current in three phase supply by certain percentage simulates ground fault. Phase reversal: By inter changing any two phases of the supply. Power frequency variation: By varying the frequency of supply voltage. The stator currents, rotor currents, stator and rotor d-q currents, speed and torque during both healthy and faulty conditions are recorded. Based on the recorded data, the performance of induction motor under various operating conditions is analyzed. 5.5 ESSENTIALS FOR TEST SET UP An experimental test set up was built as shown in Figure The test set up consists of a three phase squirrel cage induction motor with brake drum load, 3 single phase auto transformers, ammeters, voltmeters, watt meters, digital storage oscilloscope and a digital tachometer. Name plate details of test motor are given below:

16 62 Type - Squirrel Cage Voltage to 440 V Connection - Class - E Frequency - 50 Hz Rating - 3 HP Current A Speed rpm Figure 5.13 Experimental test set up The motor under test are mounted on a custom built platform designed for ease of accommodation of machines. Power is supplied to the motors under test via a motor starter most appropriately rated for a range of breakers. The voltages applied to the motors under test are controlled by 3 single phase auto transformers rated at 30 A, which are used for voltage

17 63 control. The phase to neutral voltages is independently controllable between 0 and 400V. The loading is based on brake drum type. By adjusting the brake drum arrangement load is varied. Voltage and currents are measured and recorded through a digital storage oscilloscope and a standard power data analyzer both sampling at 32 bits. Speed is measured using digital tachometer. Currents and voltages are also measured using standard ammeters and voltmeters. Power is measured using standard watt meters. 5.6 OPERATIONAL CONDITIONS FOR ANALYSIS The adjustability of the load system and the controllability of the auto transformer are essential for the establishment and maintenance of the range of test conditions as follows: Supply Variables i) Balanced rated voltage/ under voltage /over voltage ii) iii) iv) Under voltage unbalance /over voltage unbalance Single phasing Variable frequency v) Phase reversal Load Conditions i) No load ii) iii) 25%, 50%, 75%, 100% and 125% of rated loads 2, 2.5 and 3 times rated current

19 65 Based on the measured and computed datas, the performance of the three phase induction motor under various operating conditions is analyzed. 5.7 CONCLUSION This chapter explains the simulation and test set up used for fault analysis. Creation of faults and the operational conditions in both the cases are explained.

INDUCTION MOTOR MODEL AND PARAMETERS

APPENDIX C INDUCTION MOTOR MODEL AND PARAMETERS C.1 Dynamic Model of the Induction Motor in Stationary Reference Frame A three phase induction machine can be represented by an equivalent two phase machine

Modelling and Simulating a Three-Phase Induction Motor

MURDOCH UNIVERSITY SCHOOL OF ENGINEERING AND INFORMATION TECHNOLOGY Modelling and Simulating a Three-Phase Induction Motor ENG460 Engineering Thesis Benjamin Willoughby 3/3/2014 Executive Summary This

Parameter Estimation of Three Phase Squirrel Cage Induction Motor

International Conference On Emerging Trends in Mechanical and Electrical Engineering RESEARCH ARTICLE OPEN ACCESS Parameter Estimation of Three Phase Squirrel Cage Induction Motor Sonakshi Gupta Department

Electric Machines I Three Phase Induction Motor. Dr. Firas Obeidat

Electric Machines I Three Phase Induction Motor Dr. Firas Obeidat 1 Table of contents 1 General Principles 2 Construction 3 Production of Rotating Field 4 Why Does the Rotor Rotate 5 The Slip and Rotor

Prince Sattam bin Abdulaziz University College of Engineering. Electrical Engineering Department EE 3360 Electrical Machines (II)

Chapter # 4 Three-Phase Induction Machines 1- Introduction (General Principles) Generally, conversion of electrical power into mechanical power takes place in the rotating part of an electric motor. In

Lesson 17: Synchronous Machines

Lesson 17: Synchronous Machines ET 332b Ac Motors, Generators and Power Systems Lesson 17_et332b.pptx 1 Learning Objectives After this presentation you will be able to: Explain how synchronous machines

DEVELOPMENT OF DIRECT TORQUE CONTROL MODELWITH USING SVI FOR THREE PHASE INDUCTION MOTOR

DEVELOPMENT OF DIRECT TORQUE CONTROL MODELWITH USING SVI FOR THREE PHASE INDUCTION MOTOR MUKESH KUMAR ARYA * Electrical Engg. Department, Madhav Institute of Technology & Science, Gwalior, Gwalior, 474005,

International Journal of Advance Engineering and Research Development

Scientific Journal of Impact Factor (SJIF): 4.7 International Journal of Advance Engineering and Research Development Volume 4, Issue 5, May-07 e-issn (O): 348-4470 p-issn (P): 348-6406 Mathematical modeling

Chapter 5 Three phase induction machine (1) Shengnan Li

Chapter 5 Three phase induction machine (1) Shengnan Li Main content Structure of three phase induction motor Operating principle of three phase induction motor Rotating magnetic field Graphical representation

Transient Analysis of Three Phase Squirrel Cage Induction Machine using Matlab

Transient Analysis of Three Phase Squirrel Cage Induction Machine using Matlab Mukesh Kumar Arya*, Dr.Sulochana Wadhwani** *( Department of Electrical Engineering, Madhav Institute of Technology & Science,

Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science Electric Machines

Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science 6.685 Electric Machines Problem Set 10 Issued November 11, 2013 Due November 20, 2013 Problem 1: Permanent

University of Jordan Faculty of Engineering & Technology Electric Power Engineering Department

University of Jordan Faculty of Engineering & Technology Electric Power Engineering Department EE471: Electrical Machines-II Tutorial # 2: 3-ph Induction Motor/Generator Question #1 A 100 hp, 60-Hz, three-phase

EFFECTS OF LOAD AND SPEED VARIATIONS IN A MODIFIED CLOSED LOOP V/F INDUCTION MOTOR DRIVE

Nigerian Journal of Technology (NIJOTECH) Vol. 31, No. 3, November, 2012, pp. 365 369. Copyright 2012 Faculty of Engineering, University of Nigeria. ISSN 1115-8443 EFFECTS OF LOAD AND SPEED VARIATIONS

SIMULATION OF STEADY-STATE PERFORMANCE OF THREE PHASE INDUCTION MOTOR BY MATLAB

olume No.0, Issue No. 08, August 014 ISSN (online): 48 7550 SIMULATION OF STEADY-STATE PERFORMANCE OF THREE PHASE INDUCTION MOTOR BY MATLAB Harish Kumar Mishra 1, Dr.Anurag Tripathi 1 Research Scholar,

A Comparative Analysis of Three Phase Induction Motor Performance Evaluation

RESEARCH ARTICLE International Journal of Engineering and Techniques - Volume 2 Issue 3, May June 216 OPEN ACCESS A Comparative Analysis of Three Phase Induction Motor Performance Evaluation 1 France O.

Control of Wind Turbine Generators. James Cale Guest Lecturer EE 566, Fall Semester 2014 Colorado State University

Control of Wind Turbine Generators James Cale Guest Lecturer EE 566, Fall Semester 2014 Colorado State University Review from Day 1 Review Last time, we started with basic concepts from physics such as

Mathematical MATLAB Model and Performance Analysis of Asynchronous Machine

Mathematical MATLAB Model and Performance Analysis of Asynchronous Machine Bikram Dutta 1, Suman Ghosh 2 Assistant Professor, Dept. of EE, Guru Nanak Institute of Technology, Kolkata, West Bengal, India

Electrical Machines and Energy Systems: Operating Principles (Part 1) SYED A Rizvi

Electrical Machines and Energy Systems: Operating Principles (Part 1) SYED A Rizvi AC Machines Operating Principles: Rotating Magnetic Field The key to the functioning of AC machines is the rotating magnetic

Chapter 6. Induction Motors. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Chapter 6 Induction Motors 1 The Development of Induced Torque in an Induction Motor Figure 6-6 The development of induced torque in an induction motor. (a) The rotating stator field B S induces a voltage

Dynamics of the synchronous machine

ELEC0047 - Power system dynamics, control and stability Dynamics of the synchronous machine Thierry Van Cutsem t.vancutsem@ulg.ac.be www.montefiore.ulg.ac.be/~vct October 2018 1 / 38 Time constants and

Induction Motors. The single-phase induction motor is the most frequently used motor in the world

Induction Motor The single-phase induction motor is the most frequently used motor in the world Most appliances, such as washing machines and refrigerators, use a single-phase induction machine Highly

Dynamic Modeling Of A Dual Winding Induction Motor Using Rotor Reference Frame

American Journal of Engineering Research (AJER) e-issn: 2320-0847 p-issn : 2320-0936 Volume-7, Issue-11, pp-323-329 www.ajer.org Research Paper Open Access Dynamic Modeling Of A Dual Winding Induction

Dynamic Modeling of Surface Mounted Permanent Synchronous Motor for Servo motor application

797 Dynamic Modeling of Surface Mounted Permanent Synchronous Motor for Servo motor application Ritu Tak 1, Sudhir Y Kumar 2, B.S.Rajpurohit 3 1,2 Electrical Engineering, Mody University of Science & Technology,

CHAPTER 3 ANALYSIS OF THREE PHASE AND SINGLE PHASE SELF-EXCITED INDUCTION GENERATORS

26 CHAPTER 3 ANALYSIS OF THREE PHASE AND SINGLE PHASE SELF-EXCITED INDUCTION GENERATORS 3.1. INTRODUCTION Recently increase in energy demand and limited energy sources in the world caused the researchers

Work, Energy and Power

1 Work, Energy and Power Work is an activity of force and movement in the direction of force (Joules) Energy is the capacity for doing work (Joules) Power is the rate of using energy (Watt) P = W / t,

Mathematical Modelling of Permanent Magnet Synchronous Motor with Rotor Frame of Reference

Mathematical Modelling of Permanent Magnet Synchronous Motor with Rotor Frame of Reference Mukesh C Chauhan 1, Hitesh R Khunt 2 1 P.G Student (Electrical),2 Electrical Department, AITS, rajkot 1 mcchauhan1@aits.edu.in

JRE SCHOOL OF Engineering

JRE SCHOOL OF Engineering Class Test-1 Examinations September 2014 Subject Name Electromechanical Energy Conversion-II Subject Code EEE -501 Roll No. of Student Max Marks 30 Marks Max Duration 1 hour Date

MATLAB SIMULINK Based DQ Modeling and Dynamic Characteristics of Three Phase Self Excited Induction Generator

628 Progress In Electromagnetics Research Symposium 2006, Cambridge, USA, March 26-29 MATLAB SIMULINK Based DQ Modeling and Dynamic Characteristics of Three Phase Self Excited Induction Generator A. Kishore,

Power and Energy Measurement

Power and Energy Measurement EIE 240 Electrical and Electronic Measurement April 24, 2015 1 Work, Energy and Power Work is an activity of force and movement in the direction of force (Joules) Energy is

ECEN 667 Power System Stability Lecture 18: Voltage Stability, Load Models

ECEN 667 Power System Stability Lecture 18: Voltage Stability, Load Models Prof. Tom Overbye Dept. of Electrical and Computer Engineering Texas A&M University, overbye@tamu.edu 1 Announcements Read Chapter

Simulation of 3-Phase 2- Stator Induction Motor Using MATLAB Platform

International Journal of Alied Engineering Research ISSN 0973-456 Volume 3, Number (08). 9437-944 Simulation of 3-Phase - Stator Induction Motor Using MATLAB Platform Pallavi R.Burande Deartment of Electrical

ECE 325 Electric Energy System Components 7- Synchronous Machines. Instructor: Kai Sun Fall 2015

ECE 325 Electric Energy System Components 7- Synchronous Machines Instructor: Kai Sun Fall 2015 1 Content (Materials are from Chapters 16-17) Synchronous Generators Synchronous Motors 2 Synchronous Generators

Generalized Theory of Electrical Machines- A Review

Generalized Theory of Electrical Machines- A Review Dr. Sandip Mehta Department of Electrical and Electronics Engineering, JIET Group of Institutions, Jodhpur Abstract:-This paper provides an overview

Synchronous Machines

Synchronous Machines Synchronous generators or alternators are used to convert mechanical power derived from steam, gas, or hydraulic-turbine to ac electric power Synchronous generators are the primary

Behaviour of synchronous machine during a short-circuit (a simple example of electromagnetic transients)

ELEC0047 - Power system dynamics, control and stability (a simple example of electromagnetic transients) Thierry Van Cutsem t.vancutsem@ulg.ac.be www.montefiore.ulg.ac.be/~vct October 2018 1 / 25 Objectives

Steady State Modeling of Doubly Fed Induction Generator

Steady State Modeling of Douly Fed Induction Generator Bhola Jha 1, Dr. K. R. M Rao 2 1 Dept. of Electrical Engg., G. B. Pant Engg. College, Pauri-Garhwal, India 2 Dept. of Electrical Engg., M. J. College

Chapter 4. Synchronous Generators. Basic Topology

Basic Topology Chapter 4 ynchronous Generators In stator, a three-phase winding similar to the one described in chapter 4. ince the main voltage is induced in this winding, it is also called armature winding.

ROEVER COLLEGE OF ENGINEERING & TECHNOLOGY ELAMBALUR, PERAMBALUR DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING ELECTRICAL MACHINES I

ROEVER COLLEGE OF ENGINEERING & TECHNOLOGY ELAMBALUR, PERAMBALUR-621220 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING ELECTRICAL MACHINES I Unit I Introduction 1. What are the three basic types

THE DYNAMIC BEHAVIOUR OF SYNCHRONOUS AND ASYNCHRONOUS MACHINES WITH TWO-SIDE ASYMMETRY CONSIDERING SATURATION

THE DYNAMIC BEHAVIOUR OF SYNCHRONOUS AND ASYNCHRONOUS MACHINES WITH TWO-SIDE ASYMMETRY CONSIDERING SATURATION By P. VAS Department of Electric IIIachines. Technical University. Bndapest Received February

TRANSIENT ANALYSIS OF SELF-EXCITED INDUCTION GENERATOR UNDER BALANCED AND UNBALANCED OPERATING CONDITIONS

TRANSIENT ANALYSIS OF SELF-EXCITED INDUCTION GENERATOR UNDER BALANCED AND UNBALANCED OPERATING CONDITIONS G. HARI BABU Assistant Professor Department of EEE Gitam(Deemed to be University), Visakhapatnam

Modelling and Simulation of Direct Self-Control Systems*

Int. J. Engng Ed. Vol. 19, No., pp. ±, 003 099-19X/91 \$3.00+0.00 Printed in Great Britain. # 003 TEMPUS Publications. Modelling and Simulation of Direct Self-Control Systems* K. L. SHI, T. F. CHAN, Y.

EEE3405 ELECTRICAL ENGINEERING PRINCIPLES 2 - TEST

ATTEMPT ALL QUESTIONS (EACH QUESTION 20 Marks, FULL MAKS = 60) Given v 1 = 100 sin(100πt+π/6) (i) Find the MS, period and the frequency of v 1 (ii) If v 2 =75sin(100πt-π/10) find V 1, V 2, 2V 1 -V 2 (phasor)

Electrical Machines and Energy Systems: Operating Principles (Part 2) SYED A Rizvi

Electrical Machines and Energy Systems: Operating Principles (Part 2) SYED A Rizvi AC Machines Operating Principles: Synchronous Motor In synchronous motors, the stator of the motor has a rotating magnetic

Model of Induction Machine to Transient Stability Programs

Model of Induction Machine to Transient Stability Programs Pascal Garcia Esteves Instituto Superior Técnico Lisbon, Portugal Abstract- this paper reports the work performed on the MSc dissertation Model

Three phase induction motor using direct torque control by Matlab Simulink

Three phase induction motor using direct torque control by Matlab Simulink Arun Kumar Yadav 1, Dr. Vinod Kumar Singh 2 1 Reaserch Scholor SVU Gajraula Amroha, U.P. 2 Assistant professor ABSTRACT Induction

An Introduction to Electrical Machines. P. Di Barba, University of Pavia, Italy

An Introduction to Electrical Machines P. Di Barba, University of Pavia, Italy Academic year 0-0 Contents Transformer. An overview of the device. Principle of operation of a single-phase transformer 3.

Module 3 : Sequence Components and Fault Analysis

Module 3 : Sequence Components and Fault Analysis Lecture 12 : Sequence Modeling of Power Apparatus Objectives In this lecture we will discuss Per unit calculation and its advantages. Modeling aspects

Measurements of a 37 kw induction motor. Rated values Voltage 400 V Current 72 A Frequency 50 Hz Power 37 kw Connection Star

Measurements of a 37 kw induction motor Rated values Voltage 4 V Current 72 A Frequency 5 Hz Power 37 kw Connection Star Losses of a loaded machine Voltage, current and power P = P -w T loss in Torque

Three Phase Circuits

Amin Electronics and Electrical Communications Engineering Department (EECE) Cairo University elc.n102.eng@gmail.com http://scholar.cu.edu.eg/refky/ OUTLINE Previously on ELCN102 Three Phase Circuits Balanced

A Multirate Field Construction Technique for Efficient Modeling of the Fields and Forces within Inverter-Fed Induction Machines

A Multirate Field Construction Technique for Efficient Modeling of the Fields and Forces within Inverter-Fed Induction Machines Dezheng Wu, Steve Peare School of Electrical and Computer Engineering Purdue

UNIT I INTRODUCTION Part A- Two marks questions

ROEVER COLLEGE OF ENGINEERING & TECHNOLOGY ELAMBALUR, PERAMBALUR-621220 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING DESIGN OF ELECTRICAL MACHINES UNIT I INTRODUCTION 1. Define specific magnetic

CHAPTER 2 CAPACITANCE REQUIREMENTS OF SIX-PHASE SELF-EXCITED INDUCTION GENERATORS

9 CHAPTER 2 CAPACITANCE REQUIREMENTS OF SIX-PHASE SELF-EXCITED INDUCTION GENERATORS 2.. INTRODUCTION Rapidly depleting rate of conventional energy sources, has led the scientists to explore the possibility

Mutual Inductance. The field lines flow from a + charge to a - change

Capacitors Mutual Inductance Since electrical charges do exist, electric field lines have a starting point and an ending point. For example, if you have a + and a - change, the field lines would look something

We are IntechOpen, the first native scientific publisher of Open Access books. International authors and editors. Our authors are among the TOP 1%

We are IntechOpen, the first native scientific publisher of Open Access books 3,350 108,000 1.7 M Open access books available International authors and editors Downloads Our authors are among the 151 Countries

MODELING AND HIGH-PERFORMANCE CONTROL OF ELECTRIC MACHINES

MODELING AND HIGH-PERFORMANCE CONTROL OF ELECTRIC MACHINES JOHN CHIASSON IEEE PRESS ü t SERIES ON POWER ENGINEERING IEEE Press Series on Power Engineering Mohamed E. El-Hawary, Series Editor The Institute

Sensorless DTC-SVM of Induction Motor by Applying Two Neural Controllers

Sensorless DTC-SVM of Induction Motor by Applying Two Neural Controllers Abdallah Farahat Mahmoud Dept. of Electrical Engineering, Al-Azhar University, Qena, Egypt engabdallah2012@azhar.edu.eg Adel S.

Model of the Induction Machine including Saturation

Model of the Induction Machine including Saturation José M. Aller, Daniel Delgado, Alexander Bueno, Julio C. Viola and José A. Restrepo UNIVERSIDAD SIMÓN BOLÍVAR Valle de Sartenejas, Baruta, Edo. Miranda

The synchronous machine (detailed model)

ELEC0029 - Electric Power System Analysis The synchronous machine (detailed model) Thierry Van Cutsem t.vancutsem@ulg.ac.be www.montefiore.ulg.ac.be/~vct February 2018 1 / 6 Objectives The synchronous

Equivalent Circuits with Multiple Damper Windings (e.g. Round rotor Machines)

Equivalent Circuits with Multiple Damper Windings (e.g. Round rotor Machines) d axis: L fd L F - M R fd F L 1d L D - M R 1d D R fd R F e fd e F R 1d R D Subscript Notations: ( ) fd ~ field winding quantities

Analysis of the Dynamic Characteristics of an Isolated Self-Excited Induction Generator Driven by a Wind-Turbine

International Journal of Scientific & Engineering Research Volume 2, Issue 2, February-2012 1 Analysis of the Dynamic Characteristics of an Isolated Self-Excited Induction Generator Driven by a Wind-Turbine

Electromagnetic Torque From Event Report Data A Measure of Machine Performance

Electromagnetic Torque From Event Report Data A Measure of Machine Performance Derrick Haas and Dale Finney Schweitzer Engineering Laboratories, Inc. 7 SEL Overview Electromagnetic torque calculation Modeling

ELECTRICALMACHINES-I QUESTUION BANK

ELECTRICALMACHINES-I QUESTUION BANK UNIT-I INTRODUCTION OF MAGNETIC MATERIAL PART A 1. What are the three basic rotating Electric machines? 2. Name the three materials used in machine manufacture. 3. What

PERFORMANCE ANALYSIS OF DIRECT TORQUE CONTROL OF 3-PHASE INDUCTION MOTOR

PERFORMANCE ANALYSIS OF DIRECT TORQUE CONTROL OF 3-PHASE INDUCTION MOTOR 1 A.PANDIAN, 2 Dr.R.DHANASEKARAN 1 Associate Professor., Department of Electrical and Electronics Engineering, Angel College of

CHAPTER 3 ENERGY EFFICIENT DESIGN OF INDUCTION MOTOR USNG GA

31 CHAPTER 3 ENERGY EFFICIENT DESIGN OF INDUCTION MOTOR USNG GA 3.1 INTRODUCTION Electric motors consume over half of the electrical energy produced by power stations, almost the three-quarters of the

PARAMETER SENSITIVITY ANALYSIS OF AN INDUCTION MOTOR

HUNGARIAN JOURNAL OF INDUSTRIAL CHEMISTRY VESZPRÉM Vol. 39(1) pp. 157-161 (2011) PARAMETER SENSITIVITY ANALYSIS OF AN INDUCTION MOTOR P. HATOS, A. FODOR, A. MAGYAR University of Pannonia, Department of

MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION

Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme. 2) The model answer and the answer written by candidate

Work, Energy and Power

1 Work, Energy and Power Work is an activity of force and movement in the direction of force (Joules) Energy is the capacity for doing work (Joules) Power is the rate of using energy (Watt) P = W / t,

Modeling of Symmetrical Squirrel Cage Induction Machine with MatLab Simulink

Modeling of Symmetrical Squirrel Cage Induction Machine with MatLab Simulink Marcus Svoboda *, Lucian Tutelea *, Gheorghe Madescu **, Marius Biriescu *, Martian Mot ** * University POLITEHNICA Timisoara/Electrical

EE 410/510: Electromechanical Systems Chapter 4

EE 410/510: Electromechanical Systems Chapter 4 Chapter 4. Direct Current Electric Machines and Motion Devices Permanent Magnet DC Electric Machines Radial Topology Simulation and Experimental Studies

Mathematical Modeling and Dynamic Simulation of a Class of Drive Systems with Permanent Magnet Synchronous Motors

Applied and Computational Mechanics 3 (2009) 331 338 Mathematical Modeling and Dynamic Simulation of a Class of Drive Systems with Permanent Magnet Synchronous Motors M. Mikhov a, a Faculty of Automatics,

International Journal of Advance Engineering and Research Development SIMULATION OF FIELD ORIENTED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR

Scientific Journal of Impact Factor(SJIF): 3.134 e-issn(o): 2348-4470 p-issn(p): 2348-6406 International Journal of Advance Engineering and Research Development Volume 2,Issue 4, April -2015 SIMULATION

DYNAMIC PHASOR MODELING OF DOUBLY-FED INDUCTION MACHINES INCLUDING SATURATION EFFECTS OF MAIN FLUX LINKAGE. Benjamin Braconnier

DYNAMIC PHASOR MODELING OF DOUBLY-FED INDUCTION MACHINES INCLUDING SATURATION EFFECTS OF MAIN FLUX LINKAGE by Benjamin Braconnier B.Sc., The University of Alberta, 2009 A THESIS SUBMITTED IN PARTIAL FULFILLMENT

Introduction to Synchronous. Machines. Kevin Gaughan

Introduction to Synchronous Machines Kevin Gaughan The Synchronous Machine An AC machine (generator or motor) with a stator winding (usually 3 phase) generating a rotating magnetic field and a rotor carrying

LO 1: Three Phase Circuits

Course: EEL 2043 Principles of Electric Machines Class Instructor: Dr. Haris M. Khalid Email: hkhalid@hct.ac.ae Webpage: www.harismkhalid.com LO 1: Three Phase Circuits Three Phase AC System Three phase

SCHOOL OF ELECTRICAL, MECHANICAL AND MECHATRONIC SYSTEMS. Transient Stability LECTURE NOTES SPRING SEMESTER, 2008

SCHOOL OF ELECTRICAL, MECHANICAL AND MECHATRONIC SYSTEMS LECTURE NOTES Transient Stability SPRING SEMESTER, 008 October 7, 008 Transient Stability Transient stability refers to the ability of a synchronous

Dynamic Behavior of Three phase Inductions Motors as Loads in an Electric Power System with Distributed Generation, a Case of Study.

Dynamic Behavior of Three phase Inductions Motors as Loads in an Electric Power System with Distributed Generation, a Case of Study. Marcelo Rodrigo García Saquicela, Ernesto Ruppert Filho, José Luis Azcue

Generators What its all about How do we make a generator? Synchronous Operation Rotor Magnetic Field Stator Magnetic Field Forces and Magnetic Fields Force Between Fields Motoring Generators & motors are

Fault Calculation Methods

ELEC9713 Industrial and Commercial Power Systems Fault Calculation Methods There are two major problems that can occur in electrical systems: these are open circuits and short circuits. Of the two, the

Loss analysis of a 1 MW class HTS synchronous motor

Journal of Physics: Conference Series Loss analysis of a 1 MW class HTS synchronous motor To cite this article: S K Baik et al 2009 J. Phys.: Conf. Ser. 153 012003 View the article online for updates and

A GENERALISED OPERATIONAL EQUIVALENT CIRCUIT OF INDUCTION MACHINES FOR TRANSIENT/DYNAMIC STUDIES UNDER DIFFERENT OPERATING CONDITIONS

A GENERALISED OPERATIONAL EQUIVALENT CIRCUIT OF INDUCTION MACHINES FOR TRANSIENT/DYNAMIC STUDIES UNDER DIFFERENT OPERATING CONDITIONS S. S. Murthy Department of Electrical Engineering Indian Institute

UJET VOL. 2, NO. 2, DEC Page 8

UMUDIKE JOURNAL OF ENGINEERING AND TECHNOLOGY (UJET) VOL. 2, NO. 2, DEC 2016 PAGE 8-15 FINITE ELEMENT ANALYSIS OF A 7.5KW ASYNCHRONOUS MOTOR UNDER INTERMITTENT LOADING. Abunike, E. C. and Okoro, O. I.

VTU E-LEARNING NOTES ON:

VTU E-LEARNING NOTES ON: 10EE35 ELECTRICAL AND ELECTRONIC MEASUREMENTS AND INSTRUMENTATION BY DR. M.S. RAVIPRAKASHA PROFESSOR & HEAD DEPT. OF E&E ENGG. MALNAD COLLEGE OF ENGG. HASSAN 573 201. SUBJECT CODE

CHAPTER 8 DC MACHINERY FUNDAMENTALS

CHAPTER 8 DC MACHINERY FUNDAMENTALS Summary: 1. A Simple Rotating Loop between Curved Pole Faces - The Voltage Induced in a Rotating Loop - Getting DC voltage out of the Rotating Loop - The Induced Torque

Modelling of Closed Loop Speed Control for Pmsm Drive

Modelling of Closed Loop Speed Control for Pmsm Drive Vikram S. Sathe, Shankar S. Vanamane M. Tech Student, Department of Electrical Engg, Walchand College of Engineering, Sangli. Associate Prof, Department

Basic Electrical Engineering SYLLABUS. Total No. of Lecture Hrs. : 50 Exam Marks : 80

SYLLABUS Subject Code: /25 No. of Lecture Hrs./ Week : 04 IA Marks : 20 Exam Hours : 03 Total No. of Lecture Hrs. : 50 Exam Marks : 80 Course objectives: Impart a basic knowledge of electrical quantities

(Refer Slide Time: 00:55) Friends, today we shall continue to study about the modelling of synchronous machine. (Refer Slide Time: 01:09)

(Refer Slide Time: 00:55) Power System Dynamics Prof. M. L. Kothari Department of Electrical Engineering Indian Institute of Technology, Delhi Lecture - 09 Modelling of Synchronous Machine (Contd ) Friends,

Step Motor Modeling. Step Motor Modeling K. Craig 1

Step Motor Modeling Step Motor Modeling K. Craig 1 Stepper Motor Models Under steady operation at low speeds, we usually do not need to differentiate between VR motors and PM motors (a hybrid motor is

3 d Calculate the product of the motor constant and the pole flux KΦ in this operating point. 2 e Calculate the torque.

Exam Electrical Machines and Drives (ET4117) 11 November 011 from 14.00 to 17.00. This exam consists of 5 problems on 4 pages. Page 5 can be used to answer problem 4 question b. The number before a question

د شوقي حامد عرفه ابراهيم

2015 /1/19 اإلجابة النموذجية لمادة نظم التشغيل الكهربية ك 563 د شوقي حامد عرفه ابراهيم يوم االثنين الموافق Benha University Benha Faculty of Engineering Subject: Electrical drives (E563) Time: 3hours Fifth

Module 7. Transformer. Version 2 EE IIT, Kharagpur

Module 7 Transformer ersion EE T, Kharagpur Lesson 5 Testing, Efficiency & Regulation ersion EE T, Kharagpur Contents 5 Testing, Efficiency & regulation 4 5. Goals of the lesson.. 4 5. Determination of

Energy Converters. CAD and System Dynamics

Institut für Elektrische Energiewandlung Energy Converters CAD and System Dynamics - Tutorials - Issue 2017/2018 M.Sc. Sascha Neusüs / M.Sc. Marcel Lehr Professor Dr.-Ing. habil. Dr. h.c. Andreas Binder

The doubly-fed induction generator in the rotortied configuration

Graduate Theses and Dissertations Graduate College 2014 The doubly-fed induction generator in the rotortied configuration Nicholas David Iowa State University Follow this and additional works at: http://lib.dr.iastate.edu/etd

A simple model based control of self excited induction generators over a wide speed range

ISSN 1 746-7233, England, UK World Journal of Modelling and Simulation Vol. 10 (2014) No. 3, pp. 206-213 A simple model based control of self excited induction generators over a wide speed range Krishna

Modeling and Simulation of Flux-Optimized Induction Motor Drive

Research Journal of Applied Sciences, Engineering and Technology 2(6): 603-613, 2010 ISSN: 2040-7467 Maxwell Scientific Organization, 2010 Submitted Date: July 21, 2010 Accepted Date: August 20, 2010 Published

Mathematical Modelling of an 3 Phase Induction Motor Using MATLAB/Simulink

2016 IJSRSET Volume 2 Issue 3 Print ISSN : 2395-1990 Online ISSN : 2394-4099 Themed Section: Engineering and Technology Mathematical Modelling of an 3 Phase Induction Motor Using MATLAB/Simulink ABSTRACT

SECTION 3 BASIC AUTOMATIC CONTROLS UNIT 12 BASIC ELECTRICITY AND MAGNETISM

SECTION 3 BASIC AUTOMATIC CONTROLS UNIT 12 BASIC ELECTRICITY AND MAGNETISM Unit Objectives Describe the structure of an atom. Identify atoms with a positive charge and atoms with a negative charge. Explain

EFFICIENCY OPTIMIZATION OF VECTOR-CONTROLLED INDUCTION MOTOR DRIVE

EFFICIENCY OPTIMIZATION OF VECTOR-CONTROLLED INDUCTION MOTOR DRIVE Hussein Sarhan Department of Mechatronics Engineering, Faculty of Engineering Technology, Amman, Jordan ABSTRACT This paper presents a