Synchronous Machine Parameter Measurement


 Meryl Anthony
 4 years ago
 Views:
Transcription
1 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 where constnt speed nd leding power fctor opertion re desirble. In this experiment, clssicl tests will be performed to determine the synchronous mchine prmeters. Under genertor opertion, the stndrd opencircuit voltge nd shortcircuit current chrcteristics re obtined. This llows clcultion of the synchronous rectnce nd Short Circuit Rtio (SCR). The fundmentl principle of the synchronous mchine is tht the electricl frequency (in Hz) is relted to the mechnicl speed (in RPM) through the number of poles by The rdin electricl frequency is given by 120 f n (1) poles e 2 f (2) The synchronous genertor stedystte perphse equivlent electric circuit is shown in Figure 1. Typiclly, the rmture voltge is used s reference nd the internl generted voltge (or bckemf) nd rmture current re defined reltive to this phsor by V ˆ V 0 (3) E ˆ E (4) f f I ˆ I (5) In this model, the rmture resistnce is neglected nd Xs represents the sttor rectnce. All electricl quntities re operting t the frequency e with the exception of the dc field voltge nd current.
2 Synchronous Mchine Prmeter Mesurement 2 A stndrd test tht is performed on the synchronous genertor is to mesure the synchronous rectnce by mesuring the opencircuit rmture voltge nd shortcircuit rmture current versus field current while the mchine is driven t constnt mechnicl speed. If the mchine terminls re opencircuited, rmture current will be zero nd thus the mgnitude of the opencircuit voltge will be V,OC elf If Ef (6) 2 Since E f is proportionl to field current I f, one would expect the opencircuit voltge to increse linerly with field current. However, s the field current is incresed, the mchine steel sturtes nd the opencircuit chrcteristic exhibits the chrcteristic shown in Figure 2. In Figure 2, the shortcircuit current nd sttor rectnce re lso plotted versus field current. From the equivlent circuit, the rectnce cn be defined s
3 Synchronous Mchine Prmeter Mesurement 3 V,OC X s (7) I,SC It should be noted tht V, OC is linetoneutrl voltge nd if linetoline voltge is mesured, the mesured voltge should be divided by 3. It cn be seen from Figure 2, tht the synchronous rectnce chnges s the mchine sturtes. For low vlues of field current, the mchine is unsturted nd the rectnce vlue is referred to s the unsturted rectnce X. The sturted rectnce is defined s the rectnce clculted s, u ccording to (7) t field current which corresponds to rted rmture voltge on the opencircuit curve. If the rmture resistnce be clculted using R is included in the model, n exct vlue for the sttor rectnce cn X,OC 2 s, exct R I,SC 2 V (8) For prcticl mchines less thn 0.05%. R is much less thn X s nd (7) gives vlue of rectnce with n error Another prmeter tht is of interest in synchronous mchines is the shortcircuit rtio (SCR). This is defined s the mount of field current tht results in rted rmture voltge AFNL (mperes field nolod) from the opencircuit test divided by the field current tht results rted rmture current AFSC (mperes field shortcircuit) from the shortcircuit test. This cn be expressed s AFNL SCR (9) AFSC With this definition, SCR is perunit quntity. It cn be shown tht the reciprocl of SCR times the rted rmture voltge V, rted over the rted rmture current I, rted is equivlent to the sttor rectnce Eqution (10) is vlid for the sturted rectnce s defined bove. 1 V,rted X s SCR (10) I,rted
4 Synchronous Mchine Prmeter Mesurement 4 Lbortory Softwre Figure 3 shows screenshot of the lbortory softwre used in this experiment, LbSynchronousMchinePrmetersTenm. For creting the opencircuit voltge nd shortcircuit current plots, the primry vribles of interest re the field current If, the rmture voltge VLL(rms), nd the rmture current I(rms). These vribles re logged long with the frequency by clicking the Add button. The field current in the synchronous mchine is controlled by the knob on the Tenm power supply. After djusting the supply through ll field currents nd obtining the opencircuit test, the Test Type cn be chnged to ShortCircuit for the shortcircuit test. Figure 5. Screen shot of LbView softwre used for this experiment.
5 Synchronous Mchine Prmeter Mesurement 5 Lbortory Synchronous Mchines Figure 7 shows the digrm of the motor test stnd used for this experiment. The synchronous mchine is ctully woundrotor induction mchine. It will operte s synchronous mchine when dc current is supplied to the rotor. Besides the rotor windings ccessible form the connector box, the mchine lso hs shortcircuited dmper windings on the rotor. Both sides of ech sttor winding (s, bs, cs, n, bn, nd cn terminls) re brought out on the connector box for connection in wye or delt. However, in this experiment, the mchine will be connected in wye. The rotor is wyeconnected internlly, nd the three terminls re brought out (r, br, nd cr). Synchroniztion lmps re connected inbetween the sttor windings nd the line connection (terminls, b, nd c). A threephse switch bypsses these lmps when switched on. This setup cn be used for synchronizing the genertor to the line or for synchronous motor strting. The synchronous mchine is rted t 208 V (linetoline rms), 60 Hz, 200 W. It is 4pole mchine nd thus hs synchronous speed of 1800 RPM. The dc mchine rmture nd field terminls re vilble for connection (A1, A2, F1, nd F2). The mchine is designed to be shuntconnected (rmture nd field in prllel) nd is used to drive the synchronous mchine s genertor or bsorb mechnicl lod when the synchronous mchine is operting s motor.
6 Synchronous Mchine Prmeter Mesurement 6 Lbortory Work Connect the dc nd synchronous mchines to the sources s shown in Figure 5. The dc motor will be connected to the dc supply on the source pnel through the meter box so tht the voltge, current nd power cn be displyed. The synchronous mchine field is connected to the Tenm benchtop dc supply through meter box chnnel s shown. In future experiments, you will use the MgnPower supply insted. However, for this experiment, we need to operte t very low current levels where the MgnPower is unstble. Throughout this experiment, some vrition is llowble in the setting, ±0.05 A. Connect the synchronous mchine rmture terminls to the first nd second chnnels of the meter box s shown. Mke sure the switch on the connection box is in the ON position. Open nd run the correct prmeter mesurement progrm, LbSynchronousMchinePrmetersTenm. Click Zero DC offset on the lbortory softwre to zero the offset in the dc chnnels. After zeroing these chnnels, remove the short circuit wires. The benchtop supply should be set for its mximum output voltge (bout 20 V) nd minimum possible current limit. Unfortuntely, the current limit is not indicted unless the power supply is ctive. Switch on the supply t the bck, but do not enble it on the front. Adjust the voltge to its mximum nd turn the current down using the knobs on the front of the supply. Instll short (the dotted line in Figure 5, on the low side of the third chnnel of the meter box, the synchronous mchine field connection) nd enble the benchtop supply. Verify tht the disply on the LbView progrm is similr to the disply on the benchtop supply, nd turn the current down s low s possible. Disble the supply nd remove the short. Switch on the source pnel nd increse the voltge to 20%. At this time, the dc motor should strt. However, the mchine my not strt since the rmture nd field re being incresed simultneously. If this is the cse, reduce the voltge to zero nd switch off the source pnel circuit breker then connect the motor using the lternte connection shown in Figure 5. This reverses the field flux nd the mchine should strt the next time the source pnel is switched on nd djusted to 15%. If the dc motor is running smoothly, increse the source pnel voltge to 50%. This should correspond to dc voltge of bout 150 V s seen on the computer screen. At this point, the speed will be nerly 1800 RPM. Also, the rmture voltge will hve smll vlue even though the synchronous mchine field current is zero. This is becuse the rotor field poles re slightly mgnetized from previous use. This smll voltge cn be used to determine the number of poles. Write down the frequency displyed on the computer screen. Use the hndheld tchometer t your sttion to mesure the shft speed. From this informtion, the number of poles cn be computed from eqution (1) bove. The number of poles should be n even integer number. Mke sure the Test Type is set to OpenCircuit nd log dt point by clicking Add. Increse the commnded field current to 0.25 A (using the current knob on the front of the Tenm supply) nd log nother dt point. Some devition is cceptble, ±0.05 A. Continue to increse the field current in increments of 0.25 A nd log ech dt point for the entire rnge (up to 2.5 A). You should notice from the wveforms nd rms redings tht the rmture voltge increses nd the rmture current is zero. Decrese the commnded field current to zero.
7 Synchronous Mchine Prmeter Mesurement 7 At this point, the mchine should still be running nd the field current should be zero. The rmture voltge should be very smll. Add the short circuit wires (dshed wires in Figure 5, on the high side of the first two chnnels, the synchronous mchine sttor connections). Chnge the Test Type to ShortCircuit. Log dt point by clicking Add. Increse the commnded field current to 0.25 A nd log nother dt point. Continue to increse the field current in increments of 0.25 A nd log ech dt point for the entire rnge (up to 2.5 A). You should notice the rmture voltge is nerly zero nd the rmture current will increse (linerly with field current). Decrese the commnded field current to zero. Turn the source pnel voltge to zero nd switch off the source pnel. Switch off the Sorenson power supply. Click Sve nd sve the test dt to file.
8 Synchronous Mchine Prmeter Mesurement 8
9 Synchronous Mchine Prmeter Mesurement 9 Clcultions nd Questions 1. Plot the opencircuit voltge nd shortcircuit current versus field current from the test dt. The mesured opencircuit voltge is in linetoline, so must be converted to linetoneutrl before plotting. Also plot the irgp line V s shown in Figure 2. This cn be,irgp computed s stright line using some of the points with lower vlues of field current. 2. Use one of the opencircuit dt points in the liner region (low field current) to compute the unsturted synchronous rectnce using (7). The 0.25 A or 0.5 A field current points re probbly best for this. 3. Bsed on the rted rmture voltge of V 120V nd rted rmture current of I, rted, rted 0.7A, determine the AFNL nd AFSC for this mchine. Note tht the mesured dt my not contin these exct vlues nd liner interpoltion should be used for ccurcy. Using AFNL nd AFSC compute the shortcircuit rtio using eqution (9). 4. Compute the sturted synchronous rectnce using eqution (7) for the dt which corresponds to rted voltge. Compute corresponding field constnt tht provides the generted voltge given field current, using this sme dt point. Also compute the sturted synchronous rectnce using the shortcircuit rtio s in eqution (10). 5. The rmture resistnce for this mchine is given in the tble below. Compute the exct sturted synchronous rectnce using (8) nd compre it to the clcultion using (7). 6. Compute the field resistnce R f t ech dt point by dividing the field voltge Vf by the field current If. Averge the vlues for ll dt points to obtin vlue for field resistnce. 7. Compile the mchine prmeters in tble similr to the one below. Synchronous Mchine Prmeters Rted rmture voltge Rted rmture current Armture resistnce Field resistnce Unsturted synchronous rectnce V, rted 120V I, rted 0.7 A R R Sturted synchronous rectnce X s Shortcircuit rtio SCR Sturted Field Constnt, Ef/If Kf = X f s,u
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 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 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 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 informationCompared 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.
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
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 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 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 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 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 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 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 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 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 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 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 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 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: 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 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 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 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 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 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 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(1) Nonlinear system
Liner vs. nonliner systems in impednce mesurements I INTRODUCTION Electrochemicl Impednce Spectroscopy (EIS) is n interesting tool devoted to the study of liner systems. However, electrochemicl systems
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 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 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 informationPostprint. This is the accepted version of a paper presented at IEEE PES General Meeting.
http://www.divportl.org Postprint This is the ccepted version of pper presented t IEEE PES Generl Meeting. Cittion for the originl published pper: Mhmood, F., Hooshyr, H., Vnfretti, L. (217) Sensitivity
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 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 informationJUMO Wtrans B Programmable Head Transmitter with Radio Transmission
Dt Sheet 707060 Seite 1/10 JUMO Wtrns B Progrmmble Hed Trnsmitter with Rdio Trnsmission Brief description The Wtrns B hed trnsmitter with wireless dt trnsmission is used in connection with Wtrns receiver
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 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 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 informationDynamic Power Quality Compensator with an Adaptive Shunt Hybrid Filter
Interntionl Journl of Electronics nd Drive System (IJPEDS) Vol. 4, No. 4, December 2014, pp. 508~516 ISSN: 20888694 508 Dynmic Qulity Compenstor with n dptive Shunt Hybrid Filter Sindhu M R, Mnjul G Nir,
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 informationExponentialHyperbolic Model for Actual Operating Conditions of Three Phase Arc Furnaces
Americn Journl of Applied Sciences 6 (8): 15391547, 2009 ISSN 15469239 2009 Science Publictions ExponentilHyperbolic Model for Actul Operting Conditions of Three Phse Arc Furnces 1 Mhdi Bnejd, 2 RhmtAllh
More informationECE 274 Digital Logic. Digital Design. Datapath Components Shifters, Comparators, Counters, Multipliers Digital Design
ECE 27 Digitl Logic Shifters, Comprtors, Counters, Multipliers Digitl Design..7 Digitl Design Chpter : Slides to ccompny the textbook Digitl Design, First Edition, by Frnk Vhid, John Wiley nd Sons Publishers,
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 informationNP10 DIGITAL MULTIMETER Functions and features of the multimeter:
NP10 DIGITL MULTIMETER. unctions nd fetures of the multimeter: 1000 V CT III tri requencies from 10.00...10 M. Diode mesurement nd continuity testing. HOLD mesurement. Reltive mesurement. Duty cycle (%)
More informationDesign And Implementation Of Luo Converter For Electric Vehicle Applications
Design And Implementtion Of Luo Converter For Electric Vehicle Applictions A.Mnikndn #1, N.Vdivel #2 ME (Power Electronics nd Drives) Deprtment of Electricl nd Electronics Engineering Sri Shkthi Institute
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 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 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 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 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 informationDirect AC Generation from Solar Cell Arrays
Missouri University of Science nd Technology Scholrs' Mine UMRMEC Conference 1975 Direct AC Genertion from Solr Cell Arrys Fernndo L. Alvrdo Follow this nd dditionl works t: http://scholrsmine.mst.edu/umrmec
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 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 informationPassive and Active DC Breakers in the Three GorgesChangzhou HVDC Project
Pssive nd Active DC Brekers in the Three GorgesChngzhou HVDC Project Dg Andersson, Dr, nd Anders Henriksson, B.Sc.E.E, ABB, Sweden explined below) re AbstrctA new type of DC breker, bsed on stndrd SF
More informationEE Controls Lab #2: Implementing StateTransition Logic on a PLC
Objective: EE 44  Controls Lb #2: Implementing Stternsition Logic on PLC ssuming tht speed is not of essence, PLC's cn be used to implement stte trnsition logic. he dvntge of using PLC over using hrdwre
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 informationUltra Low Cost ACCELEROMETER
Chip Scle Pckged Digitl Therml Orienttion Sensing Accelerometer MXC6226XC Document Version D Pge 1 of 13 Fetures Generl Description Fully Integrted Therml Accelerometer X/Y Axis, 8 bit, Accelertion A/D
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 informationDevice installation. AFR 1xx  Feature Description of the Smart Load. AFR1xx 145 % 200 %
KM systems, s.r.o. Dr. M. Horákové 559, 460 06 Lierec 7, Czech Repulic tel. +420 485 130 314, fx +420 482 736 896 emil : km@km.cz, url : www.km.cz sturtion of the mgnetic circuit of the VT. This often
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 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 informationIncremental encoders Solid shaft with clamping or synchro flange pulses per revolution programmable (interpolated system)
Incrementl encoders Solid shft with clmping or synchro flnge 1 6556 pulses per revolution progrmmle (interpolted system) EIL580P  solid shft  OptoPulse Fetures Size mm Precise opticl sensing (interpolted)
More informationArray chip resistors size ARC241/ARC242 ARV241/ARV242
Arry chip resistors FEATURES 4 0603 sized resistors in one 1206sized pckge Reduced reel exchnge time Low ssembly costs Reduced PCB re Reduced size of finl equipment Higher component nd equipment relibility.
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 informationUltra Low Cost ACCELEROMETER
Chip Scle Pckged Fully Integrted Therml Accelerometer MXC622xXC Rev,A 8/19/2011 Pge 1 of 13 Fetures Generl Description Fully Integrted Therml Accelerometer X/Y Axis, 8 bit, Accelertion A/D Output (± 2g)
More informationMETHOD OF LOCATION USING SIGNALS OF UNKNOWN ORIGIN. Inventor: Brian L. Baskin
METHOD OF LOCATION USING SIGNALS OF UNKNOWN ORIGIN Inventor: Brin L. Bskin 1 ABSTRACT The present invention encompsses method of loction comprising: using plurlity of signl trnsceivers to receive one or
More informationHarmonic Reduction via Optimal Power Flow and the Frequency Coupling Matrix
27 IEEE Conference on Control Technology nd Applictions (CCTA August 273, 27. Kohl Cost, Hwi'i, USA Hrmonic Reduction vi Optiml Power Flow nd the Frequency Coupling Mtrix Ynhu Tin University of Toronto,
More informationLow noise SQUID simulator with large dynamic range of up to eight flux quanta
Low noise SQUID simultor with lrge dynmic rnge of up to eight flux qunt A. Mrtinez*, J. Flokstr, C. Rillo**, L.A. Angurel**, L.M. Grci** nd H.J.M. ter Brke Twente University of Technology, Deprtment of
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 informatione THE T Y P E A W AV E M ET E R is a directreading dial covers in a single rotation frequencies from
DRECT R ADNG FOR N TH S SSUE VARA A  convenient instrum nt for mesuring high frequencies in the lbort:ory, where quite  35 ULTRA HGH FREQUENCES e THE T Y P E 7 5 8 A W AV E M ET E R is Pge Le 'E VOLTAGE
More informationStudy on SLT calibration method of 2port waveguide DUT
Interntionl Conference on Advnced Electronic cience nd Technology (AET 206) tudy on LT clibrtion method of 2port wveguide DUT Wenqing Luo, Anyong Hu, Ki Liu nd Xi Chen chool of Electronics nd Informtion
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 informationZTR250 ZTR500 FIXED 2.5 AND 5 VOLT 3TERMINAL VOLTAGE REFERENCES ISSUE 4  MARCH 1998 DEVICE DESCRIPTION FEATURES APPLICATIONS SCHEMATIC DIAGRAM
FIXED 2.5 AND 5 VOLT 3TERMINAL VOLTAGE REFERENCES ISSUE 4  MARCH 1998 Plese Use ZMR Series ZTR25 ZTR5 DEVICE DESCRIPTION The ZTR25 nd ZTR5 re precision three terminl references. These devices re idel
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 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 informationElectrical data Nominal voltage AC/DC 24 V Nominal voltage frequency
echnicl dt sheet SF24AMF Prmeterisle springreturn ctutor with emergency control function for djusting dmpers in technicl uilding instlltions Air dmper size up to pprox. 4 m² Nominl torque 20 Nm Nominl
More informationThis is a repository copy of Effect of power state on absorption cross section of personal computer components.
This is repository copy of Effect of power stte on bsorption cross section of personl computer components. White Rose Reserch Online URL for this pper: http://eprints.whiterose.c.uk/10547/ Version: Accepted
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 informationArticle Design and Experimental Study of a Current Transformer with a Stacked PCB Based on BDot
Article Design nd Experimentl Study of Current Trnsformer with Stcked PCB Bsed on BDot Jingng Wng 1, Dincheng Si 1, *, Tin Tin 2 nd Rn Ren 2 1 Stte Key Lbortory of Power Trnsmission Equipment nd System
More informationRadar Altimeter TRANS / REC ( RADAR) APN117? Made by STC (UK) in 1966
dr ltimeter / ( ) 5826 99 954 2879 117? de by () in 1966 everse engineered 1 july 2014 ht is it his rdr trnsmitter/receiver is distnce meter or ltimeter, bsed on the principle. I don't hve n instrument
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 informationCVMB100 CVMB150. Power analyzers for panel
Power nlyzers CVM150 Power nlyzers for pnel Description The nd CVM150 units re pnel mounted threephse power nlyzers (dimensions: x nd 144x144 mm, respectively). oth offer 4qudrnt mesurement (consumption
More informationProtection System Analysis and Testing Using ElectroMagnetic Transients Simulation POWER RESEARCH & DEVELOPMENT CONSULTANTS NEWSLETTER PAGE
ISSN 69 Protection System Analysis and Testing Using ElectroMagnetic Transients Simulation PowerEMT POWER RESEARCH & DEVELOPMENT CONSULTANTS NEWSLETTER APRIL SEPTEMBER 7 PAGE Issue No : & PAGE Electro
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 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 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 informationSpecial Accessories. Sydrive Configurator software. 3G3IVPCN329E Inverter to PC cable. JVOP160OY Digital Operator (LCD display)
PE R52 C24 U11 C16 C26R6 U8 C28 C22 U7 R131 C33 U6 T1 Y1 U14 JP3 R25 R15 R15 R15 R10 R10 R105 R21 R5 C11 U10 R7 R102 C12 + + U9 R28 C5 R20 R30 R U10 C3 JP1 C1 + C17 R14 R1 R2 R5 R11 U1 JP5 JP6 RT4 C2 +
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 informationDirect Current Circuits
8 Direct Current Circuits CHAPTE OUTLNE 8 Electromotive Force 8 esistors in Series nd Prllel 8 Kirchho s ules 84 C Circuits 85 Electricl Meters 86 Household Wiring nd Electricl Sety ANSWES TO QUESTONS
More informationDataflow Language Model. DataFlow Models. Applications of Dataflow. Dataflow Languages. Kahn process networks. A Kahn Process (1)
The slides contin revisited mterils from: Peter Mrwedel, TU Dortmund Lothr Thiele, ETH Zurich Frnk Vhid, University of liforni, Riverside Dtflow Lnguge Model Drsticlly different wy of looking t computtion:
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 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 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 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 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 informationReal Time Determination of Rechargeable Batteries Type and the State of Charge via Cascade Correlation Neural Network
http://dx.doi.org/10.5755/j01.eie.24.1.20150 ELEKTRONIKA IR ELEKTROTECHNIKA, ISSN 13921215, VOL. 24, NO. 1, 2018 Rel Time Determintion of Rechrgeble Btteries Type nd the Stte of Chrge vi Cscde Correltion
More informationPOWER PANEL INSULATION TEST
POWER PNEL INSULTION TEST 1 VOLTGE MPCITY PNEL WITHSTND RTING MIN MLO NO. FEEDER BREKERS NO. FEEDER DISCONNECTS FED FROM OF LODS EQUIPMENT TEMPERTURE TEMPERTURE CORRECTION FCTOR TO, TCF TEST VOLTGE kvdc
More informationCOMPARISON OF THE EFFECT OF FILTER DESIGNS ON THE TOTAL HARMONIC DISTORTION IN THREEPHASE STANDALONE PHOTOVOLTAIC SYSTEMS
O. 0, NO., NOEMBER 05 ISSN 896608 ARPN Journl of Engineering nd Applied Sciences 00605 Asin Reserch Pulishing Network (ARPN). All rights reserved. www.rpnjournls.com OMPARISON OF THE EFFET OF FITER ESIGNS
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 informationDP400 / DM350. Inverter. Total Solutions from the Single Source Provider DP400 PULSED MAG  PULSED MIG CO2  MAG  MIG  FCAW
DP400 / DM350 Digitl Controlled DC Inverter Arc Welding Mchines CAT. NO. A446 Simple Opertion Perfect Welds from Arc Strt to End Inverter Totl Solutions from Single Source Provider DP400 PULSED MAG  PULSED
More informationEnergy Harvesting TwoWay Channels With Decoding and Processing Costs
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING, VOL., NO., MARCH 07 3 Energy Hrvesting TwoWy Chnnels With Decoding nd Processing Costs Ahmed Arf, Student Member, IEEE, Abdulrhmn Bknin, Student
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 information