Three-Phase Synchronous Machines The synchronous machine can be used to operate as: 1. Synchronous motors 2. Synchronous generators (Alternator)

Size: px
Start display at page:

Download "Three-Phase Synchronous Machines The synchronous machine can be used to operate as: 1. Synchronous motors 2. Synchronous generators (Alternator)"

Transcription

1 Three-Phse 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 lternting voltge. Synchronous mchine is designed to be operting t synchronous speed, n S. Sttor Two min prts: Rotor Construction detils of field nd rmture: Types of synchronous mchines clssified s ccording to the rrngement of the field nd rmture windings. 1. Rotting-Armture type: The rmture winding is on the rotor nd the field system is on the sttor. The generted current is brought out to the lod vi three (or four) slip-rings. Insultion problems, nd the difficulty involved in trnsmitting lrge currents vi the brushes, limit the mximum power output nd the generted electromgnetic field (e.m.f) this type is only used in smll units, nd its min ppliction is s the min exciter in lrge lterntors with brushless excittion system. (Limited pplictions). الصفحة ١

2 2. Rotting-field type The rmture winding is on the sttor nd the field system is on the rotor. Field current is supplied from the exciter vi two slip-rings, while the rmture current is directly supplied to the lod. This type is employed universlly since very high power cn be delivered. (Used in commercil ppliction). The prt of the mchine in which voltge is induced is clled rmture. Advntges of rotting field nd sttionry rmture system 1. Ese of construction for lrge three-phse SYG. Since the rmture winding is more complex thn the field winding. 2. Number of slip-rings required only two slip-rings. 3. It is esier to insulte the rmture coils from the core if the windings re plced on the sttor insted of on the rotor. 4. The weight of the field system plced on the rotor is comprtively much lower thn the rmture windings plced on sttor. 5. Improved ventiltion rrngement ir-cooling or/nd hydrogen cooling for lrge gen. cn esily be mde on sttionry rmture Construction of synchronous genertors: The rmture winding, usully on the sttor nd the field windings usully on the rotor is d.c excited. 1- Sttor (rmture): Three-phse windings connected on str or delt. 2- Rotor (field) The types of synchronous mchines clssified s ccording to the shpe of the field. الصفحة ٢

3 ) Cylindricl rotor, round rotor, non-slient-pole rotor. b) Slient-pole rotor Types of rotor constructions Slient-poles rotor mchine الصفحة ٣

4 Round rotor mchine الصفحة ٤

5 Construction of synchronous genertor depends upon the type of prime mover used to rotte the rotor. Three types of prime mover re generlly used: 1- Therml or nucler power sttion (stem turbine). Stem turbines re designed to rotte t high speed (3000 r.p.m.) s t high speed. The efficiency of the stem turbine is high. The rotor of SYG is non slient-pole (cylindricl rotor). Stem turbine genertor set is mounted horizontlly. الصفحة ٥

6 الصفحة ٦

7 2-Hydroelectric power sttions: The wter turbine nd the lterntor re coupled together nd mounted verticlly. The speed of such prime mover vry from 50 to 500 r.p.m, the rotor (field) hve lrge number of poles nd lrge dimeters. 3-Diesel engines: Diesel engines re used s prime movers for low rting synchronous genertors. Diesel engines re t low speeds s compred to stem turbines. The genertors hve more thn two poles nd lwys mounted horizontlly. الصفحة ٧

8 Excittion for rotting field system: ) In older mchines, the excittion current ws typiclly supplied through slip-rings from D.C mchine, referred to s the exciter, which ws often mounted on the sme shft. b) In more modern system, the excittion is supplied from A.C exciter. The output of exciter is rectified through rectifier nd then fed to the field windings. c) On lrger genertors, brushless exciters re used to supply the D.C field current to the mchine. Mny SYG which include brushless exciters lso hve slip-rings nd brushes, so tht n uxiliry source of D.C field current is vilble in emergencies. الصفحة ٨

9 According to the shpe of the field, the synchronous mchines my be clssified s: 1. Non-slient pole (operte t high speeds usully two poles). Why non-slient pole mchine usully hs smll dimeter-to-length rtio? In order to void excessive windge loss nd excessive mechnicl stress on the rotor due to the lrge centrifugl forces nd lso void noise. 2. Slient pole (operte t low speeds). Why slient pole mchine usully hs lrge dimeter-tolength rtio? Since frequency of 50 Hz is required, we must use lrge number of poles on rotor of slow-speed lterntors. Mgnitude of induced e.m.f in ech phse: The mgnitude of the voltge induced in ech phse depends upon the rotor flux, the number nd position of conductors in the phse nd the speed of rottion the rotor. E g K.. n Where: K: Is constnt representing the construction of the mchine. n: Mechnicl speed (r.p.m). φ: Flux it depends on the current flowing in the rotor field circuit. Frequency: The frequency of induced e.m.f in the rmture conductors depends upon speed nd the number of poles. f n S P. P 60 Where: f: Frequency of e.m.f in Hz. n s : Rotor speed in (r.p.m), synchronous speed. P P : Number of rotor pir pole. الصفحة ٩

10 Equivlent circuit model: We will explore the effects of the first three fctors nd derive mchine model from them, the effects of slient-pole shpe on the opertion of synchronous mchine will be ignored, in other words, ll the mchines ssumed to hve non slientpole rotors. E O : Is the internl generted voltge produced in one phse. E: It is the induced e.m.f fter llowing for rmture rection. V: Terminl voltge. E O E I ( jx ) AR E V ph I ( R jx ) L E O V ph I R ji ( X X ) AR L الصفحة ١٠

11 Synchronous Rectnce (X S ): The sum of rmture lekge rectnce (X L ) nd rectnce of rmture rection (X AR ) is clled synchronous rectnce (X S ). Note tht ll quntities re per phse: X X X S L AR Synchronous impednce Z E S O R V ph jx I S Z S الصفحة ١١

12 Phsor Digrm of Synchronous Genertor I R V F E O When the synchronous genertor non-slient pole is supplying lod; t unity power fctor (purely resistive lod) E O jx S I I V I R Lod t lgging P.F E O I R j X S I S I الصفحة ١٢

13 Lod t leding P.F E O I j X S I S I R Power nd Torque in Synchronous Genertors A genertor converts mechnicl energy into electricl energy; hence the input power will be mechnicl prime mover, e.g. diesel engine, stem turbine, wter turbine or nything similr. Regrdless of the type of prime mover, the rotor velocity must remin constnt to mintin stble system frequency.. The power-flow digrm for synchronous genertor is shown الصفحة ١٣

14 Since X R S The rmture resistnce R is ignored, Simplifying the phsor digrm, n ssumption my be mde whereby the rmture resistnce R A is considered to be negligible nd ssuming tht lod connected to it is lgging in nture. This gives phsor digrm s shown: E O j X S I E O X sin S I cos I X I cos E sin S O الصفحة ١٤

15 I cos E O sin X S P 3V ph E X O S sin Notice lso tht mximum power tht the genertor cn be supply occurs when 90, t 90,sin 1 P Mx. 3V phe X S O The mximum power indicted by this eqution is clled the sttic stbility limit of the genertor. The Effect of Lod Chnges on Synchronous Genertor Operting Alone SYG 3-Phse Lod الصفحة ١٥

16 The behvior of synchronous genertor under lod vries gretly depending on the power fctor of lod. Assume genertor is connected to lod. Wht hppens when we increse the lod on the genertor operting lone? Assumptions 1- The field current is constnt, therefore the flux is constnt. 2- The prime mover keeps constnt speed the mgnitude of the E O K.. n internl generted voltge Eo constnt 3- The lod t the sme power fctor At lgging power fctor Increse the lod t the sme power fctor, then rmture current increses. Therefore, the rmture rection voltge is lrger thn before. E V 0 jx I O ph. S الصفحة ١٦

17 Note tht E o hs to remin constnt (refer to the ssumption stted erlier) Hence the only element which would chnge to compenste would be V. This chnge my be seen in the phsor digrm. At unity-power fctor The lod increses due to the voltge decreses At leding power fctor In this cse n increse in the lod in the genertor produced n increse in the terminl voltge. الصفحة ١٧

18 Voltge Regultion The voltge regultion of n lterntor is defined s the chnge in terminl voltge from no-lod to full-lod (the speed nd field excittion being constnt) divided by full-lod voltge VR% E O V V F. L F. L 100 An lterntive wy to explin this is vi the voltge regultion formule. For lgging lods, VR would be positive. For leding lods, VR would be negtive. For unity lods, VR would positive الصفحة ١٨

19 Conditions for Prlleling Alterntor with Infinite Bus-brs The proper method of connecting n lterntor to the infinite bus-brs is clled synchronizing. A sttionry lterntor must not be connected to live bus-brs. It is becuse the induced e.m.f. is zero t stndstill nd. In order to connect n lterntor sfely to the infinite bus-brs, the following conditions re met: 1- The r.m.s line voltges of the incoming lterntor nd the infinite bus-br must be equl. 2- Frequency of the generted voltge of the incoming lterntor must be slightly higher thn the frequency of the running system. 3- The incoming lterntor nd the infinite bus-br must hve the sme phse sequence. Generted voltge of the incoming lterntor cn be djusted by djusting the field excittion by {utomtic voltge regultion (AVR) or mnully by resistnce Frequency of the incoming lterntor cn be controlled nd mde equl to bus-br frequency by controlling the speed of the prime mover driving the lterntor ( governor mechnism) Phse sequence of the lterntor nd the bus-br cn be checked by phse sequence indictor (lmps) or specil instruments clled synchroscopes الصفحة ١٩

20 Three lmp method If ll the lmps glow together nd become drk together then the phse sequence of the incoming lterntor is the sme s tht of the bus-br. If the lmps brighten in succession, then the systems hve the opposite phse sequence, nd one of the sequences must be reversed Infinite Bus-br Synchroscope: A synchroscope is n instrument tht indictes by mens of revolving pointer the phse difference nd frequency difference between the voltges of the incoming lterntor nd the bus-brs. الصفحة ٢٠

21 In lrge genertors belonging to power system, this whole process of prlleling new genertor to the line is utomted, nd computer does this job. Opertion of genertors in prllel with lrge power systems: An infinite bus is power system so lrge tht its voltge nd frequency do not vry regrdless of how much rel nd rective power is drwn from or supplied to it. When genertor is connected in prllel with lrge system, the genertor will be essentilly floting on the line, supplying smll mount of rel power nd little or no rective power. الصفحة ٢١

22 The behvior of lterntors connected to n infinite bus-br: Cse1: Wht hppens when it governor mechnism set point (prime-mover) re increses, but tht the field excittion is kept constnt? Any chnge mde in the operting conditions of one lterntor will not chnge the terminl voltge or frequency of system. V T, E O (constnt) since E O =Kφ n P in T pp S Conclusion: incresing the mechnicl input power to the prime mover will not chnge the speed ultimtely but will increse the power ngle (). As result, the chnge of driving torque controls the ctive output power incresed الصفحة ٢٢

23 After the rel power of the genertor hs been djusted to the desired vlue, the phsor digrm of genertor look like t this time the genertor is ctully operting slightly leding power fctor, supplying negtive rective power. How cns the genertor be djusted so tht it will supply some rective power to the system? Cse 2: How cn the genertor be djusted so tht will supply some rective power to system? Cn be done by djusting the field current of the lterntors, when the field current is incresed, the flux increses, nd therefore E O =Kn, nd V=constnt. Incresing the field current due to increses the rective power output of the genertor الصفحة ٢٣

24 Summry: When genertor is operting by itself supplying the system lods (lone): 1. The rel nd rective power supplied by the genertor will be the mount demnded by the ttched lod. 2. The governor set points of the genertor will control the operting frequency of the power system. 3. The field current set points control the terminl voltge of the power system. When genertor is operting in prllel with n infinite bus-br: 1. The frequency nd terminl voltge of the genertor re controlled by the system to which it is connected. 2. The governor set points of the genertor control the rel power supplied by the genertor to system. 3. The field current in the genertor controls the rective power supplied by the genertor to the system. Advntges of Prllel Opertion of Alterntors The following re the dvntges of operting lterntors in prllel: 1. Continuity of service. The continuity of service is one of the importnt requirements of ny electricl pprtus. If one lterntor fils, the continuity of supply cn be mintined. الصفحة ٢٤

25 through the other helthy units. This will ensure uninterrupted supply to the consumers. 2. Incresed Efficiency: The lod on the power system vries during the whole dy; being minimum during die lte night hours. Since lterntors operte most efficiently when delivering full-lod, units cn be dded or put off depending upon the lod requirement. This permits the efficient opertion of the power system. 3. Mintennce nd repir cn be done without power disruption. It is often desirble to crry out routine mintennce nd repir of one or more units. For this purpose, the desired Unit/units cn be shut down nd the continuity of supply is mintined through the other units 4. Lod growth. The lod demnd is incresing due to the incresing use of electricl energy. The lod growth cn be met by dding more units without disturbing the originl instlltion. الصفحة ٢٥

Synchronous Machine Parameter Measurement

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 information

Module 9. DC Machines. Version 2 EE IIT, Kharagpur

Module 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 (esson-40) 4 40.1 Gols

More information

Synchronous Generator Line Synchronization

Synchronous 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

Synchronous Machine Parameter Measurement

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 information

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.

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. 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 information

Experiment 8 Series DC Motor (II)

Experiment 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 information

University of North Carolina-Charlotte Department of Electrical and Computer Engineering ECGR 4143/5195 Electrical Machinery Fall 2009

University of North Carolina-Charlotte Department of Electrical and Computer Engineering ECGR 4143/5195 Electrical Machinery Fall 2009 Problem 1: Using DC Mchine University o North Crolin-Chrlotte Deprtment o Electricl nd Computer Engineering ECGR 4143/5195 Electricl Mchinery Fll 2009 Problem Set 4 Due: Thursdy October 8 Suggested Reding:

More information

Lecture 16: Four Quadrant operation of DC Drive (or) TYPE E Four Quadrant chopper Fed Drive: Operation

Lecture 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 information

(CATALYST GROUP) B"sic Electric"l Engineering

(CATALYST GROUP) Bsic Electricl 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 information

Alternating-Current Circuits

Alternating-Current Circuits chpter 33 Alternting-Current 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 information

Exercise 1-1. The Sine Wave EXERCISE OBJECTIVE DISCUSSION OUTLINE. Relationship between a rotating phasor and a sine wave DISCUSSION

Exercise 1-1. The Sine Wave EXERCISE OBJECTIVE DISCUSSION OUTLINE. Relationship between a rotating phasor and a sine wave DISCUSSION Exercise 1-1 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 information

Lab 8. Speed Control of a D.C. motor. The Motor Drive

Lab 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 information

EET 438a Automatic Control Systems Technology Laboratory 5 Control of a Separately Excited DC Machine

EET 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 information

Section Thyristor converter driven DC motor drive

Section Thyristor converter driven DC motor drive Section.3 - Thyristor converter driven DC motor drive.3.1 Introduction Controllble AC-DC converters using thyristors re perhps the most efficient nd most robust power converters for use in DC motor drives.

More information

CHAPTER 2 LITERATURE STUDY

CHAPTER 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

SLOVAK UNIVERSITY OF TECHNOLOGY Faculty of Material Science and Technology in Trnava. ELECTRICAL ENGINEERING AND ELECTRONICS Laboratory exercises

SLOVAK 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 information

Kirchhoff s Rules. Kirchhoff s Laws. Kirchhoff s Rules. Kirchhoff s Laws. Practice. Understanding SPH4UW. Kirchhoff s Voltage Rule (KVR):

Kirchhoff 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

5 I. T cu2. T use in modem computing systems, it is desirable to. A Comparison of Half-Bridge Resonant Converter Topologies

5 I. T cu2. T use in modem computing systems, it is desirable to. A Comparison of Half-Bridge Resonant Converter Topologies 74 EEE TRANSACTONS ON POER ELECTRONCS, VOL. 3, NO. 2, APRL 988 A Comprison of Hlf-Bridge Resonnt Converter Topologies Abstrct-The hlf-bridge series-resonnt, prllel-resonnt, nd combintion series-prllel

More information

Experiment 3: Non-Ideal Operational Amplifiers

Experiment 3: Non-Ideal Operational Amplifiers Experiment 3: Non-Idel 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 information

Experiment 3: Non-Ideal Operational Amplifiers

Experiment 3: Non-Ideal Operational Amplifiers Experiment 3: Non-Idel 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 information

The Discussion of this exercise covers the following points:

The 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 chrge-control techniques commonly used when chrging Ni-MI

More information

Section 2.2 PWM converter driven DC motor drives

Section 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 information

ABB STOTZ-KONTAKT. ABB i-bus EIB Current Module SM/S Intelligent Installation Systems. User Manual SM/S In = 16 A AC Un = 230 V AC

ABB STOTZ-KONTAKT. ABB i-bus 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 STOTZ-KONTAKT Appliction Softwre Current Vlue Threshold/1 Contents Pge 1 Device Chrcteristics...

More information

A Novel Back EMF Zero Crossing Detection of Brushless DC Motor Based on PWM

A 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 Bo-peng Wei Hi-feng School of Electricl nd Informtion, Jingsu niversity of Science nd Technology, Zhenjing 1003 Chin) Abstrct:

More information

Understanding Basic Analog Ideal Op Amps

Understanding 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 information

Safety Relay Unit. Main contacts Auxiliary contact Number of input channels Rated voltage Model Category. possible 24 VAC/VDC G9SA-501.

Safety Relay Unit. Main contacts Auxiliary contact Number of input channels Rated voltage Model Category. possible 24 VAC/VDC G9SA-501. Sfety Rely Unit The Series Offers Complete Line-up of Compct Units. Four kinds of -mm wide Units re ville: A -pole model, -pole model, nd models with poles nd OFF-dely poles, s well s Two-hnd ler. Simple

More information

(1) Non-linear system

(1) Non-linear system Liner vs. non-liner 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 information

First Round Solutions Grades 4, 5, and 6

First Round Solutions Grades 4, 5, and 6 First Round Solutions Grdes 4, 5, nd 1) There re four bsic rectngles not mde up of smller ones There re three more rectngles mde up of two smller ones ech, two rectngles mde up of three smller ones ech,

More information

Simulation of Transformer Based Z-Source Inverter to Obtain High Voltage Boost Ability

Simulation of Transformer Based Z-Source 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 Z-ource Inverter to Obtin High oltge Boost Ability A.hnmugpriy 1, M.Ishwry

More information

CHAPTER 3 AMPLIFIER DESIGN TECHNIQUES

CHAPTER 3 AMPLIFIER DESIGN TECHNIQUES CHAPTER 3 AMPLIFIER DEIGN TECHNIQUE 3.0 Introduction olid-stte microwve mplifiers ply n importnt role in communiction where it hs different pplictions, including low noise, high gin, nd high power mplifiers.

More information

Modeling of Inverter Fed Five Phase Induction Motor using V/f Control Technique

Modeling of Inverter Fed Five Phase Induction Motor using V/f Control Technique Interntionl Journl of Current Engineering nd Technology E-ISSN 2277 4106, P-ISSN 2347 161 201INPRESSCO, All Rights Reserved Avilble t http://inpressco.com/ctegory/ijcet Reserch Article Modeling of Inverter

More information

CS 135: Computer Architecture I. Boolean Algebra. Basic Logic Gates

CS 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 information

& Y Connected resistors, Light emitting diode.

& 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 information

Rectangular type APS-10 to 15 Series

Rectangular type APS-10 to 15 Series Rectngulr type APS- to 15 Series From n ultr-thin design to n operting distnce of 15 mm, wide-rnging rectngulr types re vilble to meet diversified requirements. Types output type/dc 3-wire type Shpe Operting

More information

PB-735 HD DP. Industrial Line. Automatic punch and bind machine for books and calendars

PB-735 HD DP. Industrial Line. Automatic punch and bind machine for books and calendars PB-735 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 information

Electronic Circuits I - Tutorial 03 Diode Applications I

Electronic 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 reverse-bised, diode idelly ppers s short. F 3 A

More information

Direct Current Circuits. Chapter Outline Electromotive Force 28.2 Resistors in Series and in Parallel 28.3 Kirchhoff s Rules 28.

Direct 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 information

Polar Coordinates. July 30, 2014

Polar Coordinates. July 30, 2014 Polr Coordintes July 3, 4 Sometimes it is more helpful to look t point in the xy-plne not in terms of how fr it is horizontlly nd verticlly (this would men looking t the Crtesin, or rectngulr, coordintes

More information

Example. Check that the Jacobian of the transformation to spherical coordinates is

Example. 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 information

Experiment 3: The research of Thevenin theorem

Experiment 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

Dataflow Language Model. DataFlow Models. Applications of Dataflow. Dataflow Languages. Kahn process networks. A Kahn Process (1)

Dataflow 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 information

Connection Technology

Connection 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 information

Reversible and Proportional Electric Actuators

Reversible and Proportional Electric Actuators Reversible nd Proportionl Electric s The MP s re used for two-position, floting, nd proportionl control of dmpers, vlves, nd progrm switches in heting, ventiltion, nd ir conditioning pplictions or similr

More information

Products no longer available

Products no longer available echnicl dt sheet otry ctutor F2-P(-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 information

Lecture (11) Three Phase Transformers

Lecture (11) Three Phase Transformers Lecture (11) Three Phase Transformers 11-1 High Low I = 1000 10 ( ) 4. 16 10 = 18. 8 6. 8 69 / 4.16 Kv The line current in the low voltage 1000 kv 0.8 p.f. lagging 11-2 For different connections, I2 V

More information

POWER PANEL INSULATION TEST

POWER 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 information

Triangles and parallelograms of equal area in an ellipse

Triangles and parallelograms of equal area in an ellipse 1 Tringles nd prllelogrms of equl re in n ellipse Roert Buonpstore nd Thoms J Osler Mthemtics Deprtment RownUniversity Glssoro, NJ 0808 USA uonp0@studentsrownedu osler@rownedu Introduction In the pper

More information

Series AE W PFC INDUSTRIAL POWER SUPPLY

Series AE W PFC INDUSTRIAL POWER SUPPLY FEATURES Progrmmle output voltge (0%~05%) Progrmmle output current (0%~05%) Universl AC input / Full rnge Constnt current limiting Optionl glol control vi RS3 Selectle +5V / 0.5A or +9V / 0.3A uxiliry

More information

Diffraction and Interference. 6.1 Diffraction. Diffraction grating. Diffraction grating. Question. Use of a diffraction grating in a spectrometer

Diffraction and Interference. 6.1 Diffraction. Diffraction grating. Diffraction grating. Question. Use of a diffraction grating in a spectrometer irction nd Intererence 6.1 irction irction grting Circulr dirction irction nd intererence re similr phenomen. Intererence is the eect o superposition o 2 coherent wves. irction is the superposition o mny

More information

SYNCHRONOUS MACHINES

SYNCHRONOUS MACHINES SYNCHRONOUS MACHINES The geometry of a synchronous machine is quite similar to that of the induction machine. The stator core and windings of a three-phase synchronous machine are practically identical

More information

Open Access A Novel Parallel Current-sharing Control Method of Switch Power Supply

Open Access A Novel Parallel Current-sharing Control Method of Switch Power Supply Send Orders for Reprints to reprints@enthmscience.e 170 The Open Electricl & Electronic Engineering Journl, 2014, 8, 170-177 Open Access A Novel Prllel Current-shring Control Method of Switch Power Supply

More information

2005 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media,

2005 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 information

CHAPTER 5 SYNCHRONOUS GENERATORS

CHAPTER 5 SYNCHRONOUS GENERATORS CHAPTER 5 SYNCHRONOUS GENERATORS Summary: 1. Synchronous Generator Construction 2. The Speed of Rotation of a Synchronous Generator 3. The Internal Generated Voltage of a Synchronous Generator 4. The Equivalent

More information

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency echnicl dt sheet SR24A-MF Prmeterisle rotry ctutor for ll vlves Nominl torque 20 Nm Nominl voltge AC/DC 24 V Control Modulting DC (0)2...10 V Vrile Position feedck DC 2...10 V Vrile echnicl dt Electricl

More information

A Development of Earthing-Resistance-Estimation Instrument

A Development of Earthing-Resistance-Estimation Instrument A Development of Erthing-Resistnce-Estimtion 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 information

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency echnicl dt sheet LRF24- Communictive rotry ctutor with emergency control function for ll vlves Nominl torque 4 Nm Nominl voltge AC/DC 24 V Control Modulting DC (0)2...10 V Vrile Position feedck DC 2...10

More information

Lecture 20. Intro to line integrals. Dan Nichols MATH 233, Spring 2018 University of Massachusetts.

Lecture 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 information

NP10 DIGITAL MULTIMETER Functions and features of the multimeter:

NP10 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 information

Device installation. AFR 1xx - Feature Description of the Smart Load. AFR1xx 145 % 200 %

Device 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 information

Mixed CMOS PTL Adders

Mixed CMOS PTL Adders Anis do XXVI Congresso d SBC WCOMPA l I Workshop de Computção e Aplicções 14 20 de julho de 2006 Cmpo Grnde, MS Mixed CMOS PTL Adders Déor Mott, Reginldo d N. Tvres Engenhri em Sistems Digitis Universidde

More information

ADVANCED MODULATION TECHNIQUES FOR NEUTRAL- POINT CLAMPED THREE-LEVEL INVERTERS IN AUTOMOTIVE APPLICATIONS

ADVANCED MODULATION TECHNIQUES FOR NEUTRAL- POINT CLAMPED THREE-LEVEL INVERTERS IN AUTOMOTIVE APPLICATIONS ADVANCED MODULAION ECHNIQUES FOR NEURAL- POIN CLAMPED HREE-LEVEL INVERERS IN AUOMOIVE APPLICAIONS NAZAK SOLEIMANPOUR A hesis In the Deprtment of Electricl nd Computer Engineering Presented in Prtil Fulfilment

More information

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency echnicl dt sheet SF24A-MF Prmeterisle spring-return 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 information

MEASURE THE CHARACTERISTIC CURVES RELEVANT TO AN NPN TRANSISTOR

MEASURE 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 information

Geometric quantities for polar curves

Geometric quantities for polar curves Roerto s Notes on Integrl Clculus Chpter 5: Bsic pplictions of integrtion Section 10 Geometric quntities for polr curves Wht you need to know lredy: How to use integrls to compute res nd lengths of regions

More information

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency echnicl dt sheet RF24-MF-O Communictive rotry ctutor with emergency control function for ll vlves Nominl torque 2.5 Nm Nominl voltge AC/DC 24 V Control Modulting DC ()2...1 V Position feedck DC 2...1 V

More information

SOLVING TRIANGLES USING THE SINE AND COSINE RULES

SOLVING TRIANGLES USING THE SINE AND COSINE RULES Mthemtics Revision Guides - Solving Generl Tringles - Sine nd Cosine Rules Pge 1 of 17 M.K. HOME TUITION Mthemtics Revision Guides Level: GCSE Higher Tier SOLVING TRIANGLES USING THE SINE AND COSINE RULES

More information

Math Circles Finite Automata Question Sheet 3 (Solutions)

Math 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 information

Module D1 Introduction to Distribution Systems

Module D1 Introduction to Distribution Systems D ntroduction to Distriution Systems 30 Module D ntroduction to Distriution Systems Primry Author: Gerld B. Shele, ow Stte University Emil Address: gshele@istte.edu Prerequisite Competencies: Stedy Stte

More information

Soft switched DC-DC PWM Converters

Soft switched DC-DC PWM Converters Soft switched DC-DC 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 information

Design And Implementation Of Luo Converter For Electric Vehicle Applications

Design 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 information

Section 17.2: Line Integrals. 1 Objectives. 2 Assignments. 3 Maple Commands. 1. Compute line integrals in IR 2 and IR Read Section 17.

Section 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 information

EE Controls Lab #2: Implementing State-Transition Logic on a PLC

EE Controls Lab #2: Implementing State-Transition Logic on a PLC Objective: EE 44 - Controls Lb #2: Implementing Stte-rnsition 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 information

Application Note. Differential Amplifier

Application 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 information

Resolver Interface Card "OPC-G1. RES" Product Specifications

Resolver Interface Card OPC-G1. RES Product Specifications Resolver Interfce Crd "OPC-G1 G1-RES RES" Product Specifictions Suzuk Fctory Design Dept. Dte Nme Approved Drwn 2011-4-1 Awi/Ueki Checked 2011-4-1 Y.Kto Y.Kto Drwing No. Fuji Electric Co., Ltd. SI27-5375

More information

Postprint. This is the accepted version of a paper presented at IEEE PES General Meeting.

Postprint.   This is the accepted version of a paper presented at IEEE PES General Meeting. http://www.div-portl.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 information

GEI E INSTRUCTIONS M ULTI-CONTACT AUXILIARY RELAYS TYPE HFA53. GE Protection and Control 205 Great Valley Parkway Malvern, PA

GEI E INSTRUCTIONS M ULTI-CONTACT AUXILIARY RELAYS TYPE HFA53. GE Protection and Control 205 Great Valley Parkway Malvern, PA GEI-6871 9E INSTRUCTIONS M ULTI-CONTACT AUXILIARY RELAYS TYPE HFA53 GE Protection nd Control 205 Gret Vlley Prkwy Mlvern, PA 19355-1337 2 for Semi-flush Mounting (Front View) Connected Rely with Flnge

More information

Parallel Actuator Cut-off Control PAS 3 a

Parallel Actuator Cut-off Control PAS 3 a K G Pneumtik GmbH In der Kruse 48 549 Eschweiler Deutschlnd / Germny. 49 (0) 4 03 / 99 50 0 ; 49 (0) 4 03 / 655 30 _ Info@kgpneumtik.de # www.kgpneumtik.de Smoke nd Het Exhust Pneumtic Electronic Control

More information

ZTR250 ZTR500 FIXED 2.5 AND 5 VOLT 3-TERMINAL VOLTAGE REFERENCES ISSUE 4 - MARCH 1998 DEVICE DESCRIPTION FEATURES APPLICATIONS SCHEMATIC DIAGRAM

ZTR250 ZTR500 FIXED 2.5 AND 5 VOLT 3-TERMINAL VOLTAGE REFERENCES ISSUE 4 - MARCH 1998 DEVICE DESCRIPTION FEATURES APPLICATIONS SCHEMATIC DIAGRAM FIXED 2.5 AND 5 VOLT 3-TERMINAL 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 information

Passive and Active DC Breakers in the Three Gorges-Changzhou HVDC Project

Passive and Active DC Breakers in the Three Gorges-Changzhou HVDC Project Pssive nd Active DC Brekers in the Three Gorges-Chngzhou HVDC Project Dg Andersson, Dr, nd Anders Henriksson, B.Sc.E.E, ABB, Sweden explined below) re Abstrct--A new type of DC breker, bsed on stndrd SF

More information

Chapter 6. Direct Current Motors

Chapter 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 4-Pole DC Motor Couttor long with the rture on the rotor Slient-oles on the

More information

Spiral Tilings with C-curves

Spiral Tilings with C-curves Spirl Tilings with -curves Using ombintorics to Augment Trdition hris K. Plmer 19 North Albny Avenue hicgo, Illinois, 0 chris@shdowfolds.com www.shdowfolds.com Abstrct Spirl tilings used by rtisns through

More information

This is a repository copy of Design Guidelines for Fractional Slot Multi-Phase Modular Permanent Magnet Machines.

This is a repository copy of Design Guidelines for Fractional Slot Multi-Phase Modular Permanent Magnet Machines. This is repository copy of Design Guidelines for Frctionl Slot Multi-Phse Modulr Permnent Mgnet Mchines. White Rose Reserch Online URL for this pper: http://eprints.whiterose.c.uk/110126/ Version: Accepted

More information

Student Book SERIES. Patterns and Algebra. Name

Student Book SERIES. Patterns and Algebra. Name E Student Book 3 + 7 5 + 5 Nme Contents Series E Topic Ptterns nd functions (pp. ) identifying nd creting ptterns skip counting completing nd descriing ptterns predicting repeting ptterns predicting growing

More information

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency

Electrical data Nominal voltage AC/DC 24 V Nominal voltage frequency echnicl dt sheet EVC24A-MF Prmeterisle gloe vlve ctutor for 2-wy nd 3-wy gloe vlves Actuting force 2500 N Nominl voltge AC/DC 24 V Control modulting DC (0)2...10 V Vrile Nominl stroke 40 mm Actuting time

More information

This is a repository copy of Effect of power state on absorption cross section of personal computer components.

This 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 information

OPERATING INSTRUCTION

OPERATING 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 information

Homework #1 due Monday at 6pm. White drop box in Student Lounge on the second floor of Cory. Tuesday labs cancelled next week

Homework #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 information

Ultra Low Cost ACCELEROMETER

Ultra 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 information

e THE T Y P E A W AV E M ET E R is a direct-reading dial covers in a single rotation frequencies from

e THE T Y P E A W AV E M ET E R is a direct-reading 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 - 3-5 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 information

Sequential Logic (2) Synchronous vs Asynchronous Sequential Circuit. Clock Signal. Synchronous Sequential Circuits. FSM Overview 9/10/12

Sequential Logic (2) Synchronous vs Asynchronous Sequential Circuit. Clock Signal. Synchronous Sequential Circuits. FSM Overview 9/10/12 9//2 Sequentil (2) ENGG5 st Semester, 22 Dr. Hden So Deprtment of Electricl nd Electronic Engineering http://www.eee.hku.hk/~engg5 Snchronous vs Asnchronous Sequentil Circuit This Course snchronous Sequentil

More information

Fuzzy Logic Controller for Three Phase PWM AC-DC Converter

Fuzzy Logic Controller for Three Phase PWM AC-DC Converter Journl of Electrotechnology, Electricl Engineering nd Mngement (2017) Vol. 1, Number 1 Clusius Scientific Press, Cnd Fuzzy Logic Controller for Three Phse PWM AC-DC Converter Min Muhmmd Kml1,, Husn Ali2,b

More information

Seven Sisters. Visit for video tutorials

Seven Sisters. Visit   for video tutorials Seven Sisters This imge is from www.quiltstudy.org. Plese visit this website for more informtion on Seven Sisters quilt ptterns. Visit www.blocloc.com for video tutorils 1 The Seven Sisters design cn be

More information

ARC DISCHARGE AND EROSION BEHAVIOR OF SILVER ELECTRIC CONTACTS BETWEEN STATIC GAP

ARC DISCHARGE AND EROSION BEHAVIOR OF SILVER ELECTRIC CONTACTS BETWEEN STATIC GAP ARC DISCHARGE AND EROSION BEHAVIOR OF SILVER ELECTRIC CONTACTS BETWEEN STATIC GAP Chung, H-H. 1 Lee, R-T. 2. Chiou, Y-C. 2 1 Deprtment of Automtion Engineering Ko-Yun Institute of Technology 2 Deprtment

More information

Three-Phase NPC Inverter Using Three-Phase Coupled Inductor

Three-Phase NPC Inverter Using Three-Phase Coupled Inductor ThreePhse NPC Inverter Using ThreePhse Coupled Inductor Romeu Husmnn 1, Rodrigo d Silv 2 nd Ivo Brbi 2 1 Deprtment of Electricl nd Telecommuniction Engineering, University of Blumenu FURB Blumenu SC Brzil,

More information

Dynamic Power Quality Compensator with an Adaptive Shunt Hybrid Filter

Dynamic 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: 2088-8694 508 Dynmic Qulity Compenstor with n dptive Shunt Hybrid Filter Sindhu M R, Mnjul G Nir,

More information

Direct AC Generation from Solar Cell Arrays

Direct AC Generation from Solar Cell Arrays Missouri University of Science nd Technology Scholrs' Mine UMR-MEC Conference 1975 Direct AC Genertion from Solr Cell Arrys Fernndo L. Alvrdo Follow this nd dditionl works t: http://scholrsmine.mst.edu/umr-mec

More information

TUTORIAL Electric Machine Modeling

TUTORIAL 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 information

Passive and Active Hybrid Integrated EMI Filters

Passive 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 information

Ultra Low Cost ACCELEROMETER

Ultra 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 information

Controls. Solid-State Switching Devices. Reference Manual April Low-Voltage Controls and Distribution

Controls. Solid-State Switching Devices. Reference Manual April Low-Voltage Controls and Distribution Controls Solid-Stte Switching Devices Reference Mnul April 2009 Low-Voltge Controls nd Distribution Controls Solid-Stte Switching Devices 4 Introduction Solid-Stte Switching Devices 5 Generl dt Solid-Stte

More information