Compared to generators DC MOTORS. Back e.m.f. Back e.m.f. Example. Example. The construction of a d.c. motor is the same as a d.c. generator.


 Clifton Norman
 3 years ago
 Views:
Transcription
1 Compred to genertors DC MOTORS Prepred by Engr. JP Timol Reference: Electricl nd Electronic Principles nd Technology The construction of d.c. motor is the sme s d.c. genertor. the generted e.m.f. is less thn the terminl voltge. often used in power sttions to drive emergency stndby pump systems Bck e.m.f. When d.c. motor rottes, n e.m.f. is induced in the rmture conductors. By Lenz s lw this induced d e.m.f. E opposes the supply voltge V nd is clled bck e.m.f., Bck e.m.f. nd the supply voltge, V is given by: V E I R or E V I R Exmple A d.c. motor opertes from 240V supply. The rmture resistnce is 0.2 Ω Determine the bck e.m.f. when the rmture current is 50A. Exmple The rmture of d.c. mchine hs resistnce of 0.25 Ω nd is connected to 300V supply. Clculte the e.m.f. generted when it is running: () s genertor giving 100A, nd (b) s motor tking 80A.
2 Torque of d.c. motor EI T newton meter 2 n p ZI T newton meter c An 8pole d.c. motor hs wvewound rmture with 900 conductors. The useful flux per pole is 25mWb. Determine the torque exerted when current of 30A flows in ech rmture conductor. Determine the torque developed by 350V d.c. motor hving n rmture resistnce of 0.5 nd running t 15 rev/s. The rmture current is 60A. A sixpole lpwound motor is connected to 250V d.c. supply. The rmture hs 500 conductors nd resistnce of 1. The flux per pole is 20mWb. Clculte () the speed nd (b) the torque developed when the rmture current is 40A. The shft torque of diesel motor driving 100V d.c. shuntwound genertor is 25 Nm. The rmture current of the genertor is 16A t this vlue of torque. If the shunt field regultor is djusted so tht the flux is reduced by 15 per cent, the torque increses to 35 Nm. Determine the rmture current t this new vlue of torque. A 100V d.c. genertor supplies current of 15A when running t 1500 rev/min. If the torque on the shft driving the genertor is 12 Nm, determine () the efficiency of the genertor nd (b) the power loss in the genertor.
3 Types of d.c. motor nd their chrcteristics () Shunt wound motor Supply Voltge Bck e.m.f. Supply current Equtions V E I R E V I R f I I I Smple Problem A 240V shunt motor tkes totl current of 30A. If the field winding resistnce R f =150 nd the rmture resistnce R =0.4, determine () the current in the rmture, nd (b) the bck e.m.f. Chrcteristics of Shunt Torque is proportionl to rmture current Chrcteristics of Shunt speed of rottion, E n V IR n Note In prctice, the speed flls by bout 10 percent between nolod nd fulllod on mny d.c. shuntwound motors. Due to this reltively smll drop in speed, the d.c. shuntwound motor is tken s bsiclly being constntspeed mchine nd my be used for driving lthes, lines of shfts, fns, conveyor belts, pumps, compressors, drilling mchines nd so on.
4 Chrcteristics of Shunt Smple Problem A 200V, d.c. shuntwound motor hs n rmture resistnce of 0.4Ω nd t certin lod hs n rmture current of 30A nd runs t 1350 rev/min. If the lod on the shft of the motor is incresed so tht the rmture current increses to 45A, determine the speed of the motor, ssuming the flux remins constnt. (b) Series wound motor Equtions Supply Voltge Bck e.m.f. V E I( R R ) E V I( R R ) f f Chrcteristics of Series
5 Chrcteristics of Series Smple Problem A series motor hs n rmture resistnce of 0.2Ω nd series field resistnce of 0.3 Ω. It is connected to 240V supply nd t prticulr lod runs t 24 rev/s when drwing 15A from the supply. () Determine the generted e.m.f. t this lod (b) Clculte the speed of the motor when the lod is chnged such tht the current is incresed to 30A. Assume tht this cuses doubling of the flux. (c) Compound wound motor Long nd Short Shunt Motor There re two types of compound wound motor: (i) Cumultive compound, series winding ssists the shunt winding. (ii) Differentil compound series winding opposes the shunt winding. Note A compoundwound motor hs both series nd shunt field winding, nd is usully wound to hve chrcteristic similr in shpe to series wound motor. A limited mount of shunt winding is present to restrict the nolod speed to sfe vlue. Note However, by vrying the number of turns on the series nd shunt windings nd the directions of the mgnetic fields produced by these windings (ssisting or opposing), fmilies of chrcteristics my be obtined to suit lmost ll pplictions. Generlly, compoundwound motors re used for hevy duties, prticulrly in pplictions where sudden hevy lod my occur such s for driving plunger pumps, presses, gered lifts, conveyors, hoists nd so on.
6 Chrcteristics of Compound Motor Chrcteristics of Compound Motor The efficiency of d.c. motor output power efficiency, 100 input power VI losses 100 VI 2 VI I R I fv C 100 VI Smple Problem A 320V shunt motor tkes totl current of 80A nd runs t 1000 rev/min. If the iron, friction nd windge losses mount to 1.5kW, the shunt field resistnce is 40 Ωnd the rmture resistnce is 0.2 Ω, determine the overll efficiency of the motor. Smple Problem A 250V series motor drws current of 40A. The rmture resistnce is 0.15 Ω nd the field resistnce is 0.05 Ω. Determine the mximum efficiency of the motor. Smple Problem A 200V d.c. motor develops shft torque of 15Nm t 1200 rev/min. If the efficiency is 80 per cent, determine the current supplied to the motor.
7 D.C. motor strter D.C. motor strter Additionl resistnce must be dded to the rmture circuit t the instnt of closing the switch to strt the motor fuses protecting the motor will burn out if d.c. motor whose rmture is sttionry is switched directly to its supply voltge rmture resistnce is smll, frequently being less thn one ohm. Speed control of d.c. motors Methods of speed control for shunt motors Shuntwound motors The speed of shuntwound d.c. motor, n, is proportionl to V I R shunt field regultor vrible resistor in series with the field winding nd such resistor Smple Problem A 500V shunt motor runs t its norml speed of 10 rev/s when the rmture current is 120A. The rmture resistnce is 0.2Ω. () Determine the speed when the current is 60A nd resistnce of 0.5Ω is connected in series with the rmture, the shunt field remining constnt (b) Determine the speed when the current is 60A nd the shunt field is reduced to 80 per cent of its norml vlue by incresing resistnce in the field circuit. Speed control of d.c. motors Serieswound motors The speed of serieswound d.c. motor, n, is proportionl to V IR k diverter vrible resistor connected in prllel with the serieswound field to control speed
8 Methods of speed control for series motors Smple Problem On fulllod 300V series motor tkes 90A nd runs t 15 rev/s. The rmture resistnce is 0.1 nd the series winding resistnce is 50m Ω. Determine the speed when developing full lod torque but with 0.2Ω diverter in prllel with the field winding. (Assume tht the flux is proportionl to the field current). Smple Problem A series motor runs t 800 rev/min when the voltge is 400V nd the current is 25A. The rmture resistnce is 0.44 Ωnd the series field resistnce is 0.2 Ω. Determine the resistnce to be connected in series to reduce the speed to 600 rev/min with the sme current. Motor Cooling Motors re often clssified ccording to the type of enclosure used, the type depending on the conditions under which the motor is used nd the degree of ventiltion required. Motor Cooling The most common type of protection is the Screenprotected type ventiltion is chieved by fitting fn internlly, with the openings t the end of the motor fitted with wire mesh. Dripproof type similr to the screenprotected type but hs cover over the screen to prevent drips of wter entering the mchine. Motor Cooling Flmeproof type cooled by the conduction of het through the motor csing. Pipeventilted type ir is piped into the motor from dustfree re, nd n internlly fitted fn ensures the circultion of this cool ir.
Synchronous Machine Parameter Measurement
Synchronous Mchine Prmeter Mesurement 1 Synchronous Mchine Prmeter Mesurement Introduction Wound field synchronous mchines re mostly used for power genertion but lso re well suited for motor pplictions
More informationModule 9. DC Machines. Version 2 EE IIT, Kharagpur
Module 9 DC Mchines Version EE IIT, Khrgpur esson 40 osses, Efficiency nd Testing of D.C. Mchines Version EE IIT, Khrgpur Contents 40 osses, efficiency nd testing of D.C. mchines (esson40) 4 40.1 Gols
More informationSynchronous Machine Parameter Measurement
Synchronous Mchine Prmeter Mesurement 1 Synchronous Mchine Prmeter Mesurement Introduction Wound field synchronous mchines re mostly used for power genertion but lso re well suited for motor pplictions
More informationThreePhase Synchronous Machines The synchronous machine can be used to operate as: 1. Synchronous motors 2. Synchronous generators (Alternator)
ThreePhse Synchronous Mchines The synchronous mchine cn be used to operte s: 1. Synchronous motors 2. Synchronous genertors (Alterntor) Synchronous genertor is lso referred to s lterntor since it genertes
More informationSynchronous Generator Line Synchronization
Synchronous Genertor Line Synchroniztion 1 Synchronous Genertor Line Synchroniztion Introduction One issue in power genertion is synchronous genertor strting. Typiclly, synchronous genertor is connected
More information(CATALYST GROUP) B"sic Electric"l Engineering
(CATALYST GROUP) B"sic Electric"l Engineering 1. Kirchhoff s current l"w st"tes th"t (") net current flow "t the junction is positive (b) Hebr"ic sum of the currents meeting "t the junction is zero (c)
More informationUniversity of North CarolinaCharlotte Department of Electrical and Computer Engineering ECGR 4143/5195 Electrical Machinery Fall 2009
Problem 1: Using DC Mchine University o North CrolinChrlotte Deprtment o Electricl nd Computer Engineering ECGR 4143/5195 Electricl Mchinery Fll 2009 Problem Set 4 Due: Thursdy October 8 Suggested Reding:
More informationEET 438a Automatic Control Systems Technology Laboratory 5 Control of a Separately Excited DC Machine
EE 438 Automtic Control Systems echnology bortory 5 Control of Seprtely Excited DC Mchine Objective: Apply proportionl controller to n electromechnicl system nd observe the effects tht feedbck control
More informationLab 8. Speed Control of a D.C. motor. The Motor Drive
Lb 8. Speed Control of D.C. motor The Motor Drive Motor Speed Control Project 1. Generte PWM wveform 2. Amplify the wveform to drive the motor 3. Mesure motor speed 4. Mesure motor prmeters 5. Control
More informationExperiment 8 Series DC Motor (II)
Ojectives To control the speed of loded series dc motor y chnging rmture voltge. To control the speed of loded series dc motor y dding resistnce in prllel with the rmture circuit. To control the speed
More informationExercise 11. The Sine Wave EXERCISE OBJECTIVE DISCUSSION OUTLINE. Relationship between a rotating phasor and a sine wave DISCUSSION
Exercise 11 The Sine Wve EXERCISE OBJECTIVE When you hve completed this exercise, you will be fmilir with the notion of sine wve nd how it cn be expressed s phsor rotting round the center of circle. You
More informationLecture 16: Four Quadrant operation of DC Drive (or) TYPE E Four Quadrant chopper Fed Drive: Operation
Lecture 16: Four Qudrnt opertion of DC Drive (or) TYPE E Four Qudrnt chopper Fed Drive: Opertion The rmture current I is either positive or negtive (flow in to or wy from rmture) the rmture voltge is lso
More informationSLOVAK UNIVERSITY OF TECHNOLOGY Faculty of Material Science and Technology in Trnava. ELECTRICAL ENGINEERING AND ELECTRONICS Laboratory exercises
SLOVAK UNIVERSITY OF TECHNOLOGY Fulty of Mteril Siene nd Tehnology in Trnv ELECTRICAL ENGINEERING AND ELECTRONICS Lbortory exerises Róbert Riedlmjer TRNAVA 00 ELECTRICAL ENGINEERING AND ELECTRONICS Lbortory
More informationA Novel Back EMF Zero Crossing Detection of Brushless DC Motor Based on PWM
A ovel Bck EMF Zero Crossing Detection of Brushless DC Motor Bsed on PWM Zhu Bopeng Wei Hifeng School of Electricl nd Informtion, Jingsu niversity of Science nd Technology, Zhenjing 1003 Chin) Abstrct:
More informationKirchhoff s Rules. Kirchhoff s Laws. Kirchhoff s Rules. Kirchhoff s Laws. Practice. Understanding SPH4UW. Kirchhoff s Voltage Rule (KVR):
SPH4UW Kirchhoff s ules Kirchhoff s oltge ule (K): Sum of voltge drops round loop is zero. Kirchhoff s Lws Kirchhoff s Current ule (KC): Current going in equls current coming out. Kirchhoff s ules etween
More information& Y Connected resistors, Light emitting diode.
& Y Connected resistors, Light emitting diode. Experiment # 02 Ojectives: To get some hndson experience with the physicl instruments. To investigte the equivlent resistors, nd Y connected resistors, nd
More informationExperiment 3: NonIdeal Operational Amplifiers
Experiment 3: NonIdel Opertionl Amplifiers Fll 2009 Equivlent Circuits The bsic ssumptions for n idel opertionl mplifier re n infinite differentil gin ( d ), n infinite input resistnce (R i ), zero output
More informationREVIEW QUESTIONS. Figure 2.63 For Review Question 2.6. Figure 2.64 For Review Question The reciprocal of resistance is:
EVIEW QUESTIONS 2.1 The reciprocl of resistnce is: () voltge () current (c) conductnce (d) couloms 2.2 An electric heter drws 10 A from 120V line. The resistnce of the heter is: () 1200 () 120 (c) 12
More informationThe Discussion of this exercise covers the following points:
Exercise 4 Bttery Chrging Methods EXERCISE OBJECTIVE When you hve completed this exercise, you will be fmilir with the different chrging methods nd chrgecontrol techniques commonly used when chrging NiMI
More informationExperiment 3: NonIdeal Operational Amplifiers
Experiment 3: NonIdel Opertionl Amplifiers 9/11/06 Equivlent Circuits The bsic ssumptions for n idel opertionl mplifier re n infinite differentil gin ( d ), n infinite input resistnce (R i ), zero output
More informationSection 2.2 PWM converter driven DC motor drives
Section 2.2 PWM converter driven DC motor drives 2.2.1 Introduction Controlled power supply for electric drives re obtined mostly by converting the mins AC supply. Power electronic converter circuits employing
More informationMEASURE THE CHARACTERISTIC CURVES RELEVANT TO AN NPN TRANSISTOR
Electricity Electronics Bipolr Trnsistors MEASURE THE HARATERISTI URVES RELEVANT TO AN NPN TRANSISTOR Mesure the input chrcteristic, i.e. the bse current IB s function of the bse emitter voltge UBE. Mesure
More informationABB STOTZKONTAKT. ABB ibus EIB Current Module SM/S Intelligent Installation Systems. User Manual SM/S In = 16 A AC Un = 230 V AC
User Mnul ntelligent nstlltion Systems A B 1 2 3 4 5 6 7 8 30 ma 30 ma n = AC Un = 230 V AC 30 ma 9 10 11 12 C ABB STOTZKONTAKT Appliction Softwre Current Vlue Threshold/1 Contents Pge 1 Device Chrcteristics...
More informationChapter 6. Direct Current Motors
Chter 6 Direct Current Motors DC Motors A DC Motor Arture (rotor) long with the couttor Constructionl Fetures of DC Motors A 4Pole DC Motor Couttor long with the rture on the rotor Slientoles on the
More informationElectronic Circuits I  Tutorial 03 Diode Applications I
Electronic Circuits I  Tutoril 03 Diode Applictions I 1 / 9  T & F # Question 1 A diode cn conduct current in two directions with equl ese. F 2 When reversebised, diode idelly ppers s short. F 3 A
More informationUnderstanding Basic Analog Ideal Op Amps
Appliction Report SLAA068A  April 2000 Understnding Bsic Anlog Idel Op Amps Ron Mncini Mixed Signl Products ABSTRACT This ppliction report develops the equtions for the idel opertionl mplifier (op mp).
More informationAlternatingCurrent Circuits
chpter 33 AlterntingCurrent Circuits 33.1 AC Sources 33.2 esistors in n AC Circuit 33.3 Inductors in n AC Circuit 33.4 Cpcitors in n AC Circuit 33.5 The LC Series Circuit 33.6 Power in n AC Circuit 33.7
More informationJob Sheet 2. Variable Speed Drive Operation OBJECTIVE PROCEDURE. To install and operate a Variable Speed Drive.
Job Sheet 2 Vrible Speed Drive Opertion OBJECTIVE To instll nd operte Vrible Speed Drive. PROCEDURE Before proceeding with this job, complete the sfety check list in Appendix B. 1. On the Vrible Speed
More informationCHAPTER 3 AMPLIFIER DESIGN TECHNIQUES
CHAPTER 3 AMPLIFIER DEIGN TECHNIQUE 3.0 Introduction olidstte microwve mplifiers ply n importnt role in communiction where it hs different pplictions, including low noise, high gin, nd high power mplifiers.
More informationApplication Note. Differential Amplifier
Appliction Note AN367 Differentil Amplifier Author: Dve n Ess Associted Project: Yes Associted Prt Fmily: CY8C9x66, CY8C7x43, CY8C4x3A PSoC Designer ersion: 4. SP3 Abstrct For mny sensing pplictions, desirble
More informationSafety Relay Unit. Main contacts Auxiliary contact Number of input channels Rated voltage Model Category. possible 24 VAC/VDC G9SA501.
Sfety Rely Unit The Series Offers Complete Lineup of Compct Units. Four kinds of mm wide Units re ville: A pole model, pole model, nd models with poles nd OFFdely poles, s well s Twohnd ler. Simple
More informationSection Thyristor converter driven DC motor drive
Section.3  Thyristor converter driven DC motor drive.3.1 Introduction Controllble ACDC converters using thyristors re perhps the most efficient nd most robust power converters for use in DC motor drives.
More informationRobustness Analysis of Pulse Width Modulation Control of Motor Speed
Proceedings of the World Congress on Engineering nd Computer Science 2007 WCECS 2007, October 2426, 2007, Sn Frncisco, USA obustness Anlysis of Pulse Width Modultion Control of Motor Speed Wei Zhn Abstrct
More informationTypes of Generators ACCORDING TO EXCITATION
Types of Generators ACCORDING TO EXCITATION Separately Excited DC Generator A dc generator whose field magnet winding is supplied from an independent external d.c. source (e.g., a battery etc.) Separately
More informationModeling of Inverter Fed Five Phase Induction Motor using V/f Control Technique
Interntionl Journl of Current Engineering nd Technology EISSN 2277 4106, PISSN 2347 161 201INPRESSCO, All Rights Reserved Avilble t http://inpressco.com/ctegory/ijcet Reserch Article Modeling of Inverter
More informationDESIGN OF CONTINUOUS LAG COMPENSATORS
DESIGN OF CONTINUOUS LAG COMPENSATORS J. Pulusová, L. Körösi, M. Dúbrvská Institute of Robotics nd Cybernetics, Slovk University of Technology, Fculty of Electricl Engineering nd Informtion Technology
More informationTUTORIAL Electric Machine Modeling
TUTORIAL Electric Mchine Modeling October 206 Electric Mchine Modeling One cn crete electric chine odels using the bsic unction blocks in PSIM. In this tutoril, we will illustrte how to crete the odel
More informationJoanna Towler, Roading Engineer, Professional Services, NZTA National Office Dave Bates, Operations Manager, NZTA National Office
. TECHNICA MEMOANDM To Cc repred By Endorsed By NZTA Network Mngement Consultnts nd Contrctors NZTA egionl Opertions Mngers nd Are Mngers Dve Btes, Opertions Mnger, NZTA Ntionl Office Jonn Towler, oding
More informationExperiment 3: The research of Thevenin theorem
Experiment 3: The reserch of Thevenin theorem 1. Purpose ) Vlidte Thevenin theorem; ) Mster the methods to mesure the equivlent prmeters of liner twoterminl ctive. c) Study the conditions of the mximum
More information5 I. T cu2. T use in modem computing systems, it is desirable to. A Comparison of HalfBridge Resonant Converter Topologies
74 EEE TRANSACTONS ON POER ELECTRONCS, VOL. 3, NO. 2, APRL 988 A Comprison of HlfBridge Resonnt Converter Topologies AbstrctThe hlfbridge seriesresonnt, prllelresonnt, nd combintion seriesprllel
More informationDirect Current Circuits. Chapter Outline Electromotive Force 28.2 Resistors in Series and in Parallel 28.3 Kirchhoff s Rules 28.
P U Z Z L E R If ll these pplinces were operting t one time, circuit reker would proly e tripped, preventing potentilly dngerous sitution. Wht cuses circuit reker to trip when too mny electricl devices
More informationHow to remove BRNS/BRFS series from a PWB
Applictions mnul for BRNS/BRFS series How to remove BRNS/BRFS series from PWB VER1.0 Applictions Mnul BRNS/BRFS series Pge 1. Overview 11 1.1 Overview 11 2. Preprtion 21 2.1 2.2 2.3 Removl tool Adhesive
More informationLecture 20. Intro to line integrals. Dan Nichols MATH 233, Spring 2018 University of Massachusetts.
Lecture 2 Intro to line integrls Dn Nichols nichols@mth.umss.edu MATH 233, Spring 218 University of Msschusetts April 12, 218 (2) onservtive vector fields We wnt to determine if F P (x, y), Q(x, y) is
More informationPerformance Comparison of Sliding Mode Control and Conventional PI Controller for Speed Control of Separately Excited Direct Current Motors
Journl of Science nd Technology Vol. 13, No. 2 Engineering nd Computer Sciences (ECS) Performnce Comprison of Sliding Mode Control nd Conventionl PI Controller for Speed Control of Seprtely Excited Direct
More informationSimulation of Transformer Based ZSource Inverter to Obtain High Voltage Boost Ability
Interntionl Journl of cience, Engineering nd Technology Reserch (IJETR), olume 4, Issue 1, October 15 imultion of Trnsformer Bsed Zource Inverter to Obtin High oltge Boost Ability A.hnmugpriy 1, M.Ishwry
More informationDualFuzzy MPPT in PhotovoltaicDC Analysis for Dualload Operation with SEPIC Converter
TANASELAN RAMALU et l: DUALFUZZY MPPT IN PHOTOVOLTAIC ANALYSIS FOR DUALLOAD DulFuzzy MPPT in Photovoltic Anlysis for Dullod Opertion with SEPIC Converter Tnseln Rmlu,* Mohd Amrn Mohd Rdzi Muhmmd
More informationPB735 HD DP. Industrial Line. Automatic punch and bind machine for books and calendars
PB735 HD DP Automtic punch nd bind mchine for books nd clendrs A further step for the utomtion of double loop binding. A clever nd flexible mchine ble to punch nd bind in line up to 9/16. Using the best
More informationRectangular type APS10 to 15 Series
Rectngulr type APS to 15 Series From n ultrthin design to n operting distnce of 15 mm, widernging rectngulr types re vilble to meet diversified requirements. Types output type/dc 3wire type Shpe Operting
More informationProducts no longer available
echnicl dt sheet otry ctutor F2P(O) ultifunctionl rotry ctutor with emergency control for 2 nd 3 wy control bll vlve orque Nm Nominl voltge C/DC 2 V Control: odulting DC... V or vrible Position feedbck
More informationDetermine currents I 1 to I 3 in the circuit of Fig. P2.14. Solution: For the loop containing the 18V source, I 1 = 0.
Prolem.14 Determine currents 1 to 3 in the circuit of Fig. P.14. 1 A 18 V Ω 3 A 1 8 Ω 1 Ω 7 Ω 4 Ω 3 Figure P.14: Circuit for Prolem.14. For the loop contining the 18V source, Hence, 1 = 1.5 A. KCL t node
More informationPolar Coordinates. July 30, 2014
Polr Coordintes July 3, 4 Sometimes it is more helpful to look t point in the xyplne not in terms of how fr it is horizontlly nd verticlly (this would men looking t the Crtesin, or rectngulr, coordintes
More informationReversible and Proportional Electric Actuators
Reversible nd Proportionl Electric s The MP s re used for twoposition, floting, nd proportionl control of dmpers, vlves, nd progrm switches in heting, ventiltion, nd ir conditioning pplictions or similr
More informationEngineertoEngineer Note
EngineertoEngineer Note EE297 Technicl notes on using Anlog Devices DSPs, processors nd development tools Visit our Web resources http://www.nlog.com/eenotes nd http://www.nlog.com/processors or emil
More informationFault Diagnosis Based on ANN for TurntoTurn Short Circuit of Synchronous Generator Rotor Windings
J. Electromgnetic Anlysis & Applictions, 2009, 3: 187191 doi:10.4236/jem.2009.13028 Published Online September 2009 (www.scirp.org/journl/jem) 187 Fult Dignosis Bsed on ANN or TurntoTurn Short Circuit
More informationHours / 100 Marks Seat No.
17415 15162 3 Hours / 100 Seat No. Instructions (1) All Questions are Compulsory. (2) Answer each next main Question on a new page. (3) Illustrate your answers with neat sketches wherever necessary. (4)
More informationA Development of EarthingResistanceEstimation Instrument
A Development of ErthingResistnceEstimtion Instrument HITOSHI KIJIMA Abstrct:  Whenever erth construction work is done, the implnted number nd depth of electrodes hve to be estimted in order to obtin
More informationPassive and Active Hybrid Integrated EMI Filters
Pssive nd Active Hybrid Integrted EMI Filters J. Biel, A. Wirthmueller, R. Wespe, M.. Heldwein, J. W. Kolr Power Electronic Systems bortory Swiss Federl Institute of Technology Zurich, Switzerlnd Emil:
More informationSoft switched DCDC PWM Converters
Soft switched DCDC PWM Converters Mr.M. Prthp Rju (), Dr. A. Jy Lkshmi () Abstrct This pper presents n upgrded soft switching technique zero current trnsition (ZCT), which gives better turn off chrcteristics
More informationHomework #1 due Monday at 6pm. White drop box in Student Lounge on the second floor of Cory. Tuesday labs cancelled next week
Announcements Homework #1 due Mondy t 6pm White drop ox in Student Lounge on the second floor of Cory Tuesdy ls cncelled next week Attend your other l slot Books on reserve in Bechtel Hmley, 2 nd nd 3
More information9.4. ; 65. A family of curves has polar equations. ; 66. The astronomer Giovanni Cassini ( ) studied the family of curves with polar equations
54 CHAPTER 9 PARAMETRIC EQUATINS AND PLAR CRDINATES 49. r, 5. r sin 3, 5 54 Find the points on the given curve where the tngent line is horizontl or verticl. 5. r 3 cos 5. r e 53. r cos 54. r sin 55. Show
More informationFuzzy Logic Controller for Three Phase PWM ACDC Converter
Journl of Electrotechnology, Electricl Engineering nd Mngement (2017) Vol. 1, Number 1 Clusius Scientific Press, Cnd Fuzzy Logic Controller for Three Phse PWM ACDC Converter Min Muhmmd Kml1,, Husn Ali2,b
More informationExample. Check that the Jacobian of the transformation to spherical coordinates is
lss, given on Feb 3, 2, for Mth 3, Winter 2 Recll tht the fctor which ppers in chnge of vrible formul when integrting is the Jcobin, which is the determinnt of mtrix of first order prtil derivtives. Exmple.
More informationConnection Technology
Opticl fibre signl trnsmission RS422/HTL Opticl fibre trnsmitter nd receiver plus Cost Kostenvorteil dvntge compred gegenüber to conventionl herkömmlicher wiring Verkbelung over b 150 m length* Länge *
More informationCS 135: Computer Architecture I. Boolean Algebra. Basic Logic Gates
Bsic Logic Gtes : Computer Architecture I Boolen Algebr Instructor: Prof. Bhgi Nrhri Dept. of Computer Science Course URL: www.ses.gwu.edu/~bhgiweb/cs35/ Digitl Logic Circuits We sw how we cn build the
More informationNevery electronic device, since all the semiconductor
Proceedings of Interntionl Joint Conference on Neurl Networks, Orlndo, Florid, USA, August 1217, 2007 A Selftuning for Reltime Voltge Regultion Weiming Li, XioHu Yu Abstrct In this reserch, selftuning
More informationARC DISCHARGE AND EROSION BEHAVIOR OF SILVER ELECTRIC CONTACTS BETWEEN STATIC GAP
ARC DISCHARGE AND EROSION BEHAVIOR OF SILVER ELECTRIC CONTACTS BETWEEN STATIC GAP Chung, HH. 1 Lee, RT. 2. Chiou, YC. 2 1 Deprtment of Automtion Engineering KoYun Institute of Technology 2 Deprtment
More informationADVANCED MODULATION TECHNIQUES FOR NEUTRAL POINT CLAMPED THREELEVEL INVERTERS IN AUTOMOTIVE APPLICATIONS
ADVANCED MODULAION ECHNIQUES FOR NEURAL POIN CLAMPED HREELEVEL INVERERS IN AUOMOIVE APPLICAIONS NAZAK SOLEIMANPOUR A hesis In the Deprtment of Electricl nd Computer Engineering Presented in Prtil Fulfilment
More informationDevelopment and application of a patentbased design around. process
Authors: YehLing Hsu, PoEr Hsu, YungChieh Hung, YDn Xio (4); recommended: YehLing Hsu (69). Note: his pper is presented t the st Interntionl Conference on Systemtic Innovtion, Hsinchu, iwn, Jnury.
More informationCarbon Composition Resistors
Dimensions Cron Composition Resistors Rtings nd Dimensions Type L Specifiction Limit nd Performnce d D Derting Curve 8 6 4 (/, w) Test procedures, sequence of test, etc., refer to MILSTD D nd JISC5.
More informationCHAPTER 2 LITERATURE STUDY
CHAPTER LITERATURE STUDY. Introduction Multipliction involves two bsic opertions: the genertion of the prtil products nd their ccumultion. Therefore, there re two possible wys to speed up the multipliction:
More informationNetwork Theorems. Objectives 9.1 INTRODUCTION 9.2 SUPERPOSITION THEOREM
M09_BOYL3605_13_S_C09.indd Pge 359 24/11/14 1:59 PM f403 /204/PH01893/9780133923605_BOYLSTAD/BOYLSTAD_NTRO_CRCUT_ANALYSS13_S_978013... Network Theorems Ojectives Become fmilir with the superposition theorem
More informationModeling of Conduction and Switching Losses in ThreePhase Asymmetric MultiLevel Cascaded Inverter
Proceedings of the 5th WEA nt. onf. on Power ystems nd Electromgnetic omptibility, orfu, Greece, August 2325, 2005 (pp176181) Modeling of onduction nd witching Losses in ThreePhse Asymmetric MultiLevel
More informationCHARACTERISTICS OF THE GPS SIGNAL SCINTILLATIONS DURING IONOSPHERIC IRREGULARITIES AND THEIR EFFECTS OVER THE GPS SYSTEM
CHRCTERISTICS OF THE GPS SIGNL SCINTILLTIONS DURING IONOSPHERIC IRREGULRITIES ND THEIR EFFECTS OVER THE GPS SYSTEM Eurico R. de Paula, I.J.Kantor, L.F.C. de Rezende ERONOMY DIVISION NTIONL INSTITUTE FOR
More informationOPERATING INSTRUCTION
2 AUTOMATIC POLARIMETER OPERATING INSTRUCTION Plese red through these operting instruction before using MRC.VER.01. CONTENTS I. APPLICATIONS.1 II. III. IV. PERFORMANCE 1 CONSTRUCTION AND PRINCIPLE 2
More information2005 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media,
005 IEEE. Personl use of this mteril is permitted. Permission from IEEE must be obtined for ll other uses, in ny current or future medi, including reprinting/republishing this mteril for dvertising or
More informationNEW METHOD FOR THE STATE EVALUATION OF THE ZEROSEQUENCE SYSTEM
TX it NEW METHOD FOR THE STATE EVALUATION OF THE ZEROSEQUENCE SYSTEM Gernot DRUML A. Eberle GmbH Germny g.druml@ieee.org Olf SEIFERT Dresden University of Technology Germny seifert@ieeh.et.tudresden.de
More information050 (with Circulated Air) EHDF G C2 Y 30 Direction Valve Rated Flow Series Number Type of Mounting. L/min.
roportionl Electroydrulic Directionl nd Flow Control Vlves hese vlves incorporte two control functionsflow nd directionwhich simplify the hydrulic circuit composition nd therefore the cost of the system
More informationSection 16.3 Double Integrals over General Regions
Section 6.3 Double Integrls over Generl egions Not ever region is rectngle In the lst two sections we considered the problem of integrting function of two vribles over rectngle. This sitution however is
More informationVector Calculus. 1 Line Integrals
Vector lculus 1 Line Integrls Mss problem. Find the mss M of very thin wire whose liner density function (the mss per unit length) is known. We model the wire by smooth curve between two points P nd Q
More informationNetwork Sharing and its Energy Benefits: a Study of European Mobile Network Operators
Network Shring nd its Energy Benefits: Study of Europen Mobile Network Opertors Mrco Ajmone Mrsn Electronics nd Telecommunictions Dept Politecnico di Torino, nd Institute IMDEA Networks, mrco.jmone@polito.it
More informationCAL. NX15 DUODISPLAY QUARTZ
L. NX15 UOISPLY QURTZ l nlogue time disply l igitl time nd clendr l hronogrph l Tchymeter l t recll function l lrm l Illuminting light (Electroluminescent pnel) ENGLISH Illuminting light (TIME/LENR mode
More information050 (with Circulated Air) EHDF G C2 Y 30 Direction Valve Rated Flow Series Number Type of Mounting. L/min.
roportionl Electroydrulic Directionl nd Flow Control Vlves E SERIES hese vlves incorporte two control functionsflow nd directionwhich simplify the hydrulic circuit composition nd therefore the cost
More informationMAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION
Important Instructions to examiners: 1) The answers should be examined by key words and not as wordtoword as given in the model answer scheme. 2) The model answer and the answer written by candidate
More informationMath Circles Finite Automata Question Sheet 3 (Solutions)
Mth Circles Finite Automt Question Sheet 3 (Solutions) Nickols Rollick nrollick@uwterloo.c Novemer 2, 28 Note: These solutions my give you the nswers to ll the prolems, ut they usully won t tell you how
More informationSection 17.2: Line Integrals. 1 Objectives. 2 Assignments. 3 Maple Commands. 1. Compute line integrals in IR 2 and IR Read Section 17.
Section 7.: Line Integrls Objectives. ompute line integrls in IR nd IR 3. Assignments. Red Section 7.. Problems:,5,9,,3,7,,4 3. hllenge: 6,3,37 4. Red Section 7.3 3 Mple ommnds Mple cn ctully evlute line
More informationInvestigation of Ground Frequency Characteristics
Journl of Electromgnetic Anlysis nd Applictions, 03, 5, 337 http://dx.doi.org/0.436/jem.03.58050 Published Online August 03 (http://www.scirp.org/journl/jem) Mohmed Nyel Electricl Engineering Deprtment,
More informationEffect of Highspeed Milling tool path strategies on the surface roughness of Stavax ESR mold insert machining
IOP Conference Series: Mterils Science nd Engineering PAPER OPEN ACCESS Effect of Highspeed Milling tool pth strtegies on the surfce roughness of Stvx ESR mold insert mchining Relted content  Reserch
More informationInterference Cancellation Method without Feedback Amount for Three Users Interference Channel
Open Access Librry Journl 07, Volume, e57 ISSN Online: 97 ISSN Print: 9705 Interference Cncelltion Method without Feedbc Amount for Three Users Interference Chnnel Xini Tin, otin Zhng, Wenie Ji School
More informationA Blended SPSESPS Control DABIBDC Converter for a Standalone Solar Power System
energies Article A Blended SPSESPS Control Converter for Stlone Solr Power System P. Sthishkumr 1, Himnshu 1, Shengxu Pio 1, Muhmmd Adil Khn 1, DoHyun Kim 1, MinSoo Kim 1, DongKeun Jeong 2, Cheewoo
More informationMAXIMUM FLOWS IN FUZZY NETWORKS WITH FUNNELSHAPED NODES
MAXIMUM FLOWS IN FUZZY NETWORKS WITH FUNNELSHAPED NODES Romn V. Tyshchuk Informtion Systems Deprtment, AMI corportion, Donetsk, Ukrine Emil: rt_science@hotmil.com 1 INTRODUCTION During the considertion
More informationThe computer simulation of communication for PLC systems
The computer simultion of communiction for PLC systems Jiri Misurec Milos Orgon Dept. of Telecommunictions Fculty of Electricl Engineering nd Communiction Brno University of Technology Purkynov 8 6 00
More informationUpdate B158J New Chip Breaker Inserts for Turning Expanded Inserts
2009.4 Updte B158J Expnded s New Chip Breker s for Turning Breker Offers the best performnce for utomotive prts pplictions! ysmooth chip control even t vried depths of cut, feeds nd cutting speeds! New
More informationLow Cost Microcontroller Based Implementation of Modulation Techniques for ThreePhase Inverter Applications
Low Cost Microcontroller Bsed Implementtion of Modultion Techniques for ThreePhse Inverter Applictions T. Erfidn, S. Urgun, Student Member, IEEE, nd B. Hekimoglu, Student Member, IEEE Abstrct: Sinusoidl
More informationMath 116 Calculus II
Mth 6 Clculus II Contents 7 Additionl topics in Integrtion 7. Integrtion by prts..................................... 7.4 Numericl Integrtion.................................... 7 7.5 Improper Integrl......................................
More informationAntiSurge Thick Film Chip Resistors Rtings ERJP3 (63) (63) ERJP6 ERJP8 (26) ERJP4 (2) Power Rting (3) t 7 C (W) Element Voltge () Mximum Overlod Volt
AntiSurge Thick Film Chip Resistors AntiSurge Thick Film Chip Re sis tors 63, 85, 26, 2 : ERJ P3, PA3, P6, P8, P4 Fetures ESD surge chrcteristics superior to stndrd metl fi lm resistors High relibility
More informationApplication of Feed Forward Neural Network to Differential Protection of Turbogenerator
16th NATIONAL POWER SYSTEMS CONFERENCE, 15th17th DECEMBER, 21 464 Appliction of Feed Forwrd Neurl Network to Differentil Protection of Turbogenertor Amrit Sinh Dept. of Electricl Engg., Ntionl Institute
More informationTHE STUDY OF INFLUENCE CORE MATERIALS ON TECHNOLOGICAL PROPERTIES OF UNIVERSAL BENTONITE MOULDING MATERIALS. Matej BEZNÁK, Vladimír HANZEN, Ján VRABEC
THE STUDY OF INFLUENCE CORE MATERIALS ON TECHNOLOGICAL PROPERTIES OF UNIVERSAL BENTONITE MOULDING MATERIALS Mtej BEZNÁK, Vldimír HANZEN, Ján VRABEC Authors: Mtej Beznák, Assoc. Prof. PhD., Vldimír Hnzen,
More informationDiscontinued AN6262N, AN6263N. (planed maintenance type, maintenance type, planed discontinued typed, discontinued type)
ICs for Cssette, Cssette Deck ANN, ANN Puse Detection s of Rdio Cssette, Cssette Deck Overview The ANN nd the ANN re the puse detection integrted circuits which select the progrm on the cssette tpe. In
More information10.4 AREAS AND LENGTHS IN POLAR COORDINATES
65 CHAPTER PARAMETRIC EQUATINS AND PLAR CRDINATES.4 AREAS AND LENGTHS IN PLAR CRDINATES In this section we develop the formul for the re of region whose oundry is given y polr eqution. We need to use the
More informationThis is a repository copy of Design Guidelines for Fractional Slot MultiPhase Modular Permanent Magnet Machines.
This is repository copy of Design Guidelines for Frctionl Slot MultiPhse Modulr Permnent Mgnet Mchines. White Rose Reserch Online URL for this pper: http://eprints.whiterose.c.uk/110126/ Version: Accepted
More information