All-optical busbar differential protection scheme for electric power systems
|
|
- Alexina Watson
- 5 years ago
- Views:
Transcription
1 All-opticl usr differentil protection scheme for electric power systems M Nsir +, A Dysko, P. Niewczs, G Fusiek Institute for Energy nd Environment, Electronic nd Electricl Enginering Deprtment. University of Strthclyde, Glsgow UK. + Emil: muhmmd.nsir@strth.c.uk Keywords: Frdy rottor, opticl devices model, differentil protection, Jones mtrix formlistion, opticl mesurement. Astrct This pper proposes novel implementtion of differentil protection scheme using mgneto-optic current sensors. The proposed ll-opticl Differentil Protection (ODP) scheme utilizes inherent properties of mgneto-optic sensors connected in series to perform differentil protection functionlity. In order to demonstrte the vlidity of the proposed scheme, ll constituent components such s opticl fire, polrisers nd Frdy rottors hve een modelled using the Jones mtrix representtion. Through selected simultion-sed cse studies, including externl nd internl (high resistive nd solid) fults, the pper demonstrtes tht the proposed novel ODP scheme for usr protection meets the protection relying performnce criteri in terms of discrimintion, sensitivity, stility, s well s ultr-high speed of opertion. Introduction In the conventionl usr differentil protection schemes, iron core current trnsformers (CTs) or equivlent electronic current trnsformers (ECTs) re pplied to mesure current in protected circuits. CTs suffer from mesurement ccurcy issues resulting from the existence of the mgnetizing current. This cn e worsened y sturtion cusing significnt current mesurement errors, potentilly leding to erroneous rely opertion nd flse tripping of the circuit reker (CB). The effect is prticulrly significnt in usr protection pplictions s mny CTs re often connected in prllel nd thus incresing the influence of the mgnetising current. Development of n opticl current trnsducer (OCT) for protection purposes is imed to resolve the CT sturtion prolem nd other technologicl shortcomings [-4]. Significnt progresses hve een mde in recent yers to relize such OCTs. A numer of methods hve een implemented which cn e grouped under two rod types, nmely hyrid opticl sensing [5], exploiting comintion of primry current trnsducers, mgnetostrictive or piezoelectric sensors nd opticl strin sensors tht re interrogted remotely, nd pure opticl sensing [6], utilising rnge of intrinsic or extrinsic opticl sensors sed on the mgnetooptic Frdy effect. Moreover, rnge of reserch ctivities in the re of opticl current sensing for monitoring, metering nd protection purposes re still underwy [7-]. ODP schemes hve een reported extensively in open literture. These schemes pply the generl method of modern numericl protection where currents re mesured y OCT, digitized, nd nlysed using numericl lgorithms sed on the selected protection scheme [-3]. Therefore, such schemes could e termed s mixed opticl-numericl protection. They generlly consist of two steps: conversion process nd process of sustitution into protection scheme lgorithm. The first step (the conversion process) is the conversion of the mesured current from nlogue to opticl modultion tht is performed y n OCT. The second step is to trnslte the opticl signls into digitl vlues which re then used y n lgorithm within numericl rely to perform given protection relying scheme. In contrst to the previous method, this pper introduces new method to perform n ODP scheme tht could e termed s ll-opticl protection. An ODP scheme for usr protection sed on the circulting current differentil protection principle is proposed. The proposed ODP scheme is implemented using crefully designed rrngement of sic opticl devices without the need for complex numericl processing t the second step conversion in the previous method. The proposed scheme utilizes ll opticl elements to perform the opertionl chrcteristic of differentil protection using configurtion of opticl devices such s Frdy rottor, liner polrizer, polrized light source nd opticl detector. In this design, inherent opertionl functionlity is relised using series connection of opticl devices tht follow the current differentil connection pttern. Such design is intended to minimize the complexity of the ODP configurtion while retining the qulity of the differentil protection scheme. Due to the purely opticl nture of the scheme, the need for digitistion of the sensor outputs nd digitl signl processing within the rely re eliminted; therefore, the proposed scheme hs the potentil for the reduction of the totl operting time. This pper egins with theoreticl overview of the circulting current protection scheme nd modelling of opticl components in Section 2. A methodology to design novel ll-opticl differentil protection scheme configurtion is
2 explined in detil in Section 3. Moreover, the results of computer simultions re given in Section 4. Finlly, Sections 5 nd 6 cover the discussion nd conclusions, respectively. 2 Theoreticl ckground 2. Circulting current differentil protection The sic principle of circulting current differentil protection scheme is presented in Fig.. I CT- i i 2 Loop i diff = i + i 2 Loop 2 CT-2 Fig.. Principle of circulting current differentil protection. The scheme is sed on Kirchhoff s current lw which mintins tht the directed sum of ll currents in the helthy element is equl to zero (under idel mesurement conditions), Therefore, current sum which is not equl to zero would indicte n existence of fult in the protected element. Rely threshold setting is typiclly introduced in the differentil protection to cover ny non-idel conditions. The differentil rely genertes no tripping signl when the differentil current i diff is smller thn the threshold setting, nd the tripping signl is produced only when differentil current is greter thn the setting [4-6]. The differentil rely opertion logic cn e stted s follows: { i diff = I + I 2 ; No trip is generted, if: i diff i setting ; () Trip is generted, if: i diff > i setting } where i diff is the differentil current in the rely rnch, i nd i 2 re phsors derived from secondry currents of CT- nd CT-2 flowing in loop nd loop 2 respectively. 2.2 Opticl component modelling using Jones principles For the purposes of modelling the opticl devices nd the ODP scheme configurtion, polrized light nd ll opticl prts (sensors, opticl fire, polrizers, wve-pltes, etc.) cn e expressed in mtrix which use [2x2] mtrix representtion. Since in this method polrized light will e used s crrier trnsverse wve to interrogte Frdy rottors, the polrized light hs to use representtion which cn descrie its chrcteristics in terms of two liner orthogonl polriztions. As consequence, the polrized light could e expressed y the two element vector, E, to descrie its stte of polriztion (SOP). All opticl prts such s the frdy rottor, liner polrizer, nd opticl fire should comply with the modelling process sed on the Jones mtrices [7-2]. I 2 In order to incorporte ll models of opticl devices in n integrted frmework, Jones formliztion hd een introduced s forml system for nlysing light nd opticl mteril interction. The electric field component of the trnsverse wve, E o, exiting single device tht introduces n opticl effect J when incident light, E i, psses through this medi, is given s E o = J E i (2) The effect of multiple opticl devices cn e determined y simple multipliction of the mtrices where output of the first device ecomes input for the next device. This principle cn e descried y E o = J m J m- J m-2 J m-3... J 3 J 2 J E i (3) where m is numer of opticl components in the pth. The Jones formliztion is n efficient method in numericl modelling of polrized light, opticl devices, nd interction etween light nd opticl mterils [7]. 2.3 Frdy mgneto-optic principle When linerly polrized light psses through mgneto-optic medium, such s opticl glss or TGG crystl, the direction of polriztion is rotted in proportion to the mgnetic field component prllel to the light propgtion direction (refer to Fig. 2.). The ngle of rottion of the polrized light (θ) is proportionl to the mgnetic field intensity vector (H) nd the cosine of the ngle etween the field nd the direction of the light wve propgtion. In the trnsprent mteril the effect is descried y Becquerel's formul (4) which is well known s the Frdy effect [22, 23]: θ = V L μ H dl (4) where, V is the mteril Verdet constnt relted to mteril chrcteristics, wvelength, nd temperture; dl is the differentil vector long the direction of light propgtion; nd L is the distnce of the polrized light trversing the Frdy mgneto-optic mteril. Since μh cn e sustituted y B (mgnetic field strength), (μ is the permeility of the mgneto-optic mteril), eqution (4) cn e expressed s θ = V L B dl = V B L (5) 3 Design of ll-opticl protection scheme 3. Sensor design The proposed trnsducer exploits Frdy rottor (FR) element centred in solenoid used to induce mgnetic field in the rottor s result of current flowing through the coil. This is illustrted in Fig. 2. 2
3 The stte of polristion (SOP) of light exiting the Frdy rottor cn e expressed y the ngle of rottion : θ = V L k n i (6) polrized light which hs to trvel long the protection scheme configurtion (Fig. 3). This condition is fulfilled when reltively short sections of fire (metres) re employed. where k is fctor for mgnetic field., n is the numer of turns per unit length, i is the mesured current. Thus, the ngle of rottion is proportionl to the mesured current on primry side. E P FR- i E i / E o : light input / output P / P2: polrizer-/2 FR-2 P2 : FO link, FR-/2: opticl sensor-/2 E o. Frdy effect Eo. FR sensor design B FR sensor Fig. 3. Opticl differentil protection scheme configurtion for 2 rnches In order to nlyse the polrized light interction within opticl components, y following eqution (3) nd Fig. 3, the input nd output reltionship of polrized light in the complete ODP scheme cn e expressed using the Jones mtrices formlism: Fig. 2. Opticl current trnsducer employing Frdy mgneto-optic effect 3.2 Design nd principle of ODP scheme c. Design of FR sensor (inside the coil) s OCT The ODP scheme cn e relized y comining the circulting current differentil principle with oth Frdy rottor sensors (illustrted in Fig 2) connected in series using section of opticl fire. The comined opticl rottion is sum totl of the outputs produced y the two sensors. This is descried y the following eqution: θ diff = θ θ 2 (7) where θ nd θ 2 re the light stte outputs from Frdy rottor sensor dn 2 respectively. To successfully implement the scheme, three conditions must e fulfilled. Firstly, polrized light is required for opertion of the scheme. Secondly, the differentil current detection should e relised y the opticl circuit s much s possile, with miniml involvement of electronic signl processing. Thirdly, the scheme must provide dequte performnce in terms of sensitivity of the differentil current detection. The three requirements of the ODP design cn e fulfilled y the pproprite rrngement of sic opticl devices s shown in Fig. 3. It is noted tht two liner polrizers in Fig. 3 must e plced with the trnsmission xis (TA) t 9 or crossed position with respect to ech other. The Frdy rottor sensors re connected in series nd plced etween the two polrisers (P nd P2). Their electricl terminls must e connected in such wy tht the polristion rottions of the individul sensors cncel out when there is no fult condition (no differentil current present). Such is n ODP scheme follows the differentil relying connection requirement. The scheme cn e extended to more thn two Frdy rottor sensors, for exmple pplied to multi-terminl circuit. Criticlly, the opticl fire is required to mintin the SOP of E o = FO5 9 P2 8 FO4 7 FR2 6 FO3 5 FR 4 FO2 3 P 2 FO E i (8) where FO, FO2, FO3, FO4 nd FO5 re mtrices representtion of fire optic sections, 2, 3, 4 nd 5 respectively, P nd P2 re mtrices representtion of polrisers nd 2, FRl nd FR2 re mtrices representtion of Frdy rottors nd 2, nd E i is mtrices representtion of the polrized light input. Since ech opticl Jones mtrix in eqution (8) is in the similr Crtesin coordinte system tht re linked together y E o nd E i ; therefore, Crtesin Jones mtrix trnsformtion must e pplied to the opticl device if it hs een rotted or is under coordinte rottion. As the representtion of circulting current differentil protection in the electricl domin is stted y eqution (), the similr expression in opticl domin is stted y eqution (8). For usr with more thn 2 rnches / circuits, eqution (8) could e extended y dding numer of FR nd FO links sed on Kirchhoff Current Lw. In ddition, the polriztion sttes or the light intensity t the exit of P2 or FO is then monitored y detector unit. The output signl cn e descried s [24, 25] I = S = ( E o E o * ) / Z (9) where E o is electric field component of the trnsverse wve, E o * is trnspose of the complex conjugte E o nd Z is totl impednce of the medium which is the rtio of the electric field to the mgnetic field. The detector unit consists of photo-detector nd optoelectronic threshold detector. A comprison process is crried out y simple optoelectronic threshold detector to detect fult occurrence through ll-opticl comprison tht compres etween power modultion outputs nd the threshold level. The output then informs decision either to trip or no-trip s prt of opticl protection relying opertion. 3
4 Trip Signl Modultion (W) Current (A) Trip Signl Modultion (W) Current (A) Trip Signl Modultion (W) Current (A) In prcticl term, the first condition, no-trip signl is generted y the ODP when the opticl power modultion is less thn the threshold setting. This condition tkes plce when rted current flows t the primry side (no-fult condition) or fult occurs t outside of protected circuit (externl fult) which cuse oth Frdy rottor outputs to hve the sme sttes ut in opposite direction therefore the sum of light rottions is zero. Conversely, trip signl is generted y the ODP when the opticl power modultion is greter thn the threshold setting. This condition occurs when n internl fult occurs t protected circuit which cuse oth Frdy rottor outputs to hve different sttes - therefore the sum of light sttes is greter thn zero. 4 Cse studies To ssess performnce of the proposed ODP for usr protection, Mtl / Simulink model of the scheme ws uilt. The model consists of test power system (Fig. 4), the light source wvelength of 55 nm, differentil protection model sed on eqution (8) nd the output detector using eqution (9). Internl fult G: 2 MVA, 2kV T: 2 MVA, 2/32kV Externl close-end fult TL: 32kV, km Busr protection zone G2: 25 MVA, 2kV T2: 25 MVA, 2/32kV Fig. 4. system model for opticl differentil protection scheme In generl, two min fult conditions re considered, i.e. internl nd externl fult with respect to the protected zone. Internl fult lso includes high resistive fult with R f =2 Ω. The fult scenrios re summrised in Tle. The fult inception time is ssumed to e.2 second nd the power of opticl source is mw. FO ttenution is.2 db/km nd other losses such s Fresnel reflection is clculted using the Mtl progrm. Threshold setting is chosen to μw s n verge vlue of mesured opticl power modultions etween solid externl fult nd high resistive internl fult. This ensures tht there is comfortle mrgin for oth sensitivity nd stility of the scheme. Additionlly, smll stilising dely of.5 ms hs een pplied to prevent spurious tripping on rndom noise. Cse Fult Fult Fult loction type resistnce Remrks. internl L-G R f =2 Ω Fig. 5. internl L-G R f = Ω (solid) Fig. 6 2 externl L-G R f = Ω (solid) Fig. 7 Tle : Loction, type nd resistnce of simulted fults For verifying protection sensitivity, Cse-. with high resistive fult condition ws used. The simultion results indicted tht the ODP could detect n occurrence of fult which provides power modultion with pek vlue of μw. By pssing this opticl power modultion into simple threshold comprison, the protection genertes trip signl s illustrted in Fig. 5. c Fig. 5. ODP Scheme simultion for internl high resistive fult:. Mesured fult current,. Opticl power modultion, nd c. Trip signl. c c x x x Fig. 6. ODP Scheme simultion for internl solid fult:. Mesured fult current,. Opticl power modultion, nd c. Trip signl x x Fig. 7. ODP Scheme simultion for externl solid fult:. Mesured fult current,. Opticl power modultion, nd c. Trip signl. In cse of solid internl fult (refer to Fig. 6) the power modultion is much higher thn the ssumed threshold [.332 mw (-8.75 db) compred to μw ( db)] which demonstrtes very good level of dependility. 4
5 P-mod & Set-reset P-Mod & Set - reset The ODP stility/security ttriute is tested y simultion Cse 2 with externl solid fult (refer to Fig. 7). In this cse the power modultion level is μw ( db) which is elow the ssumed threshold. Another protection ttriute is the speed of opertion. The ODP totl operting time consists of three consecutive time intervls which re: the differentil output, opticl power comprison, nd decision processing time (including ny stilising time delys nd tripping logic). The differentil output processing time is very short ecuse it uses polrized light to conduct instntneous differentil processing. In the presented cse it is pproximtely 3.28 μs with FO length round 5 m nd the light speed in the medium c/n (where c is the light constnt nd n is refrctive index of opticl medium). The remining processes which re the photodetection nd comprison of the opticl power modultion nd decision processes re similr to typicl numericl rely processing time, which in this cse could e chieved in less thn 2 ms (refer to Fig. 8 nd Tle 2). It is lso worth mentioning tht the ppliction of Frdy rottors which sustitute iron core CTs helps in eliminting potentil sturtion prolems x modultion Drop-out Pick-up Fig. 8. Time trces simultion of ODP scheme for different fult resitypes:. Internl high resistive fult, nd. Internl solid fult. Cse Incipient Differentil sttus (ms) ODP Trip t Fult t No. Pickuout time (ms) Drop- response (s) (s) Attempt Tle 2: Pick-up, drop-out nd tripping time of ODP scheme 5 Discussion nd Conclusions Trip signl Trip Signl 2.5 x modultion Pick-up Trip signl Trip 2.3 signl In this pper, sic model of the ll-opticl differentil protection scheme for usr protection sed on comintion of Frdy rottors nd other pssive opticl devices modelled using Jones principles hs een developed. The proposed ODP model hs the ility to generte opticl modultion output s the SOP sum of ll FR outputs tht corresponds with the differentil of mesured current. Therefore, the ODP scheme is n lterntive of n electromgnetic rely type of circulting current differentil protection scheme. The proposed ODR scheme consists of simple opticl rrngement nd need no complex procedure to conduct its function s differentil protection. Thus, the proposed technique of ll-opticl usr differentil protection scheme does not merely use the opticl sensing techniques to derive the numericl replic of the current ut lso utilises opticl devices to directly implement the fundmentl principles of differentil protection. The scheme is simple series connection of opticl components without the need for complex signl processing. The required processes re conducted y direct sutrction of polristion rottions s distinctive primry process of the ODP scheme to shorten the rection time. Through systemtic simultionsed cse studies, the proposed novel configurtion hs met the protection relying key performnce criteri such s selectivity, sensitivity, security, dependility nd speed of opertion. The simultion hve demonstrted tht n immedite response to n increse in differentil current cn e chieved using opticl system nd the ll-opticl protection scheme providing fst-cting nd highly discrimintive fult detection system for us r protection. The method tht ws presented in this pper could provide contriution to sic development of opticl differentil protection frmework. Even though the ODP scheme hs een demonstrted on usr protection, the proposed method hs potentil to e pplied s differentil protection for short trnsmission lines (up to km). Further investigtion is needed to rigorously ssess such pplictions. Although fult detection system cn e relised for sic protected circuit, such s us r, due to the smll vlue of opticl power modultion during high resistnce fults, the intensity of opticl power modultion my not e sufficient to detect such fult. These issues will e ddressed y the future reserch. Simultion results tht re presented in this pper were chieved with ssumption tht the opticl sensors hd similr chrcteristics. It should e noted tht opticl power ttenution is neglected due to ending of opticl fire. Future work will concentrte on ddressing these issues nd will ssess the influence of these effects on the proposed system performnce. This will e chieved oth through improved modelling nd lortory testing of the system prototype. Acknowledgment The uthor would like to thnk Directorte Generl Higher Eduction of Repulic of Indonesi (k Dikti) for their support through BPPLN scholrship progrmme. References [] IEEE, "Opticl current trnsducers for power systems: review," Delivery, IEEE Trnsctions on, vol. 9, pp , 994. [2] J. D. P. Hrluik, "Opticl current sensors eliminte CT sturtion," in Engineering Society Winter Meeting, 22. IEEE, 22, pp vol.2. 5
6 [3] K. Bohnet, et l., "Fier-Optic Current nd Voltge Sensor for High-Voltge Susttions," 6th Interntionl conference on Opticl Fier Sensors, p. 3, 3-7 octoer [4] S. Kucuksri nd G. G. Krdy, "Experimentl Comprison of Conventionl nd Opticl Current Trnsformers," Delivery, IEEE Trnsctions on, vol. 25, pp , 2. [5] L. Dziud, et l., "Lortory evlution of the hyrid fieroptic current sensor," Sensors nd Actutors A: Physicl, vol. 36, pp. 84-9, 27. [6] M. H. Smimi, et l., "Open Core Opticl Current Trnsducer: Modeling nd Experiment," Delivery, IEEE Trnsctions on, vol. PP, pp. -, 25. [7] C. T. Lw, et l., "Fier-Optics-Bsed Fult Detection in Systems," Delivery, IEEE Trnsctions on, vol. 23, pp , 28. [8] A. P. Steer, et l., "Opticl fire current sensor for circuit protection," in Developments in Protection, 989., Fourth Interntionl Conference on, 989, pp [9] R. B. Amin Moghds, Mehdi Shdrm, "An Innovtive Fire Brgg Grting Sensor Cple of Fult Detection in Rdil power Systems," presented t the 4th Annul IEEE System Conference 2, 2. [] P. Orr, et l., "Flexile protection rchitectures using distriuted opticl sensors," in Developments in Systems Protection, 22. DPSP 22. th Interntionl Conference on, 22, pp. -6. [] H. Y. Li nd P. A. Crossly, "Design nd evlution of current differentil protection scheme incorporting fier opticl current sensor," in Engineering Society Summer Meeting, 2. IEEE, 2, pp vol. 3. [2] M. Nsir, et l., "Development of System Differentil Protection Bsed on Opticl Current Mesurement," in 48th Interntionl Universities' Engineering Conference, Dulin, 23. [3] G. Fusiek, et l., "All-opticl differentil current detection technique for unit protection pplictions," in Interntionl Instrumenttion nd Mesurement Technology Conference 23, Minnepolis, USA, 23. [4] J. Holch, "Comprison etween high impednce nd low impednce us differentil protection," in Systems Conference, 29. PSC '9., 29, pp. -6. [5] P. M. Anderson. (999). System Protection. [6] GEC. Protective Relying Appliction Guide. [7] R. C. Jones, "New Clculus for the tretment of Opticl Systems: I-VII," Journl of the Opticl Society of Americ, vol. 3,32,37,38, [8] A. J. Rogers, Polriztion in opticl fiers: Norwood, MA : Artech House, 28. [9] R. M. A. Azzm, Bshr, N. M, Ellipsometry nd Polrized Light. Amsterdm: Elsevier Science BV, 987. [2] S. Kucuksri nd G. G. Krdy, "Complete Model Development for n Opticl Current Trnsformer," Delivery, IEEE Trnsctions on, vol. 27, pp , 22. [2] Hndook of opticl systems: Weinheim ; Gret Britin : Wiley-VCH, 25. [22] E. Hecht, Physics: Brooks/Cole Pu., 994. [23] R. D. Guenther, Modern optics: New York : Wiley, 99. [24] F. L. Pedrotti, et l., Introduction to Optics: Person Prentice Hll, 27. [25] C. A. Dimrzio, Optics for engineers: Boc Rton, FL : CRC Press, 22. 6
Multi-beam antennas in a broadband wireless access system
Multi-em ntenns in rodnd wireless ccess system Ulrik Engström, Mrtin Johnsson, nders Derneryd nd jörn Johnnisson ntenn Reserch Center Ericsson Reserch Ericsson SE-4 84 Mölndl Sweden E-mil: ulrik.engstrom@ericsson.com,
More informationCHAPTER 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 informationTo provide data transmission in indoor
Hittite Journl of Science nd Engineering, 2018, 5 (1) 25-29 ISSN NUMBER: 2148-4171 DOI: 10.17350/HJSE19030000074 A New Demodultor For Inverse Pulse Position Modultion Technique Mehmet Sönmez Osmniye Korkut
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 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 reverse-bised, diode idelly ppers s short. F 3 A
More informationMixed 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 informationSimulation 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& 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 informationExercise 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(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 informationAlternating-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 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 (esson-40) 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 informationMagnetic monopole field exposed by electrons
Mgnetic monopole field exposed y electrons A. Béché, R. Vn Boxem, G. Vn Tendeloo, nd J. Vereeck EMAT, University of Antwerp, Groenenorgerln 171, 22 Antwerp, Belgium Opticl xis Opticl xis Needle Smple Needle
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 informationAnalysis of circuits containing active elements by using modified T - graphs
Anlsis of circuits contining ctive elements using modified T - grphs DALBO BOLEK *) nd EA BOLKOA**) Deprtment of Telecommunictions *) dioelectronics **) Brno Universit of Technolog Purknov 8, 6 Brno CECH
More information(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 information5 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 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 informationA 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 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 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 informationSOLVING 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 informationThree-Phase Synchronous Machines The synchronous machine can be used to operate as: 1. Synchronous motors 2. Synchronous generators (Alternator)
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
More informationGeometric 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 informationExperimental Application of H Output-Feedback Controller on Two Links of SCARA Robot
INTERNATIONAL JOURNAL OF CONTROL, AUTOMATION AND SYSTEMS VOL.5 NO. Jnury 6 ISSN 65-877 (Print) ISSN 65-885 (Online) http://www.reserchpu.org/journl/jc/jc.html Experimentl Appliction of H Output-Feedck
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 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 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 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 Four-port diplexer for high Tx/Rx isolation for integrated transceivers.
This is repository copy of Four-port diplexer for high Tx/Rx isoltion for integrted trnsceivers. White Rose Reserch Online URL for this pper: http://eprints.whiterose.c.uk/124000/ Version: Accepted Version
More informationImplementation of Different Architectures of Forward 4x4 Integer DCT For H.264/AVC Encoder
Implementtion of Different Architectures of Forwrd 4x4 Integer DCT For H.64/AVC Encoder Bunji Antoinette Ringnyu, Ali Tngel, Emre Krulut 3 Koceli University, Institute of Science nd Technology, Koceli,
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 Bo-peng Wei Hi-feng School of Electricl nd Informtion, Jingsu niversity of Science nd Technology, Zhenjing 1003 Chin) Abstrct:
More informationExperiment 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 informationAN ELECTRON SWITCH. by C. DORSMAN and S. L. de BRUIN.
SEPTEMBER 1939 267 AN ELECTRON SWITCH y C. DORSMAN nd S. L. de BRUIN. 621.317.755.06 An pprtus is descried with which the time function of two different mgnitudes cn e oserved simultneouslyon the fluorescent
More informationPRACTICE NO. PT-TE-1414 RELIABILITY PAGE 1 OF 6 PRACTICES ELECTROSTATIC DISCHARGE (ESD) TEST PRACTICES
PREFERRED PRACTICE NO. PT-TE-1414 RELIABILITY PAGE 1 OF 6 ELECTROSTATIC DISCHARGE (ESD) TEST Prctice: Test stellites for the ility to survive the effects of electrosttic dischrges (ESDs) cused y spce chrging
More informationABB 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 informationArea-Time Efficient Digit-Serial-Serial Two s Complement Multiplier
Are-Time Efficient Digit-Seril-Seril Two s Complement Multiplier Essm Elsyed nd Htem M. El-Boghddi Computer Engineering Deprtment, Ciro University, Egypt Astrct - Multipliction is n importnt primitive
More informationUniversity 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 informationProceedings of Meetings on Acoustics
Proceedings of Meetings on Acoustics Volume 19, 2013 http://cousticlsociety.org/ ICA 2013 Montrel Montrel, Cnd 2-7 June 2013 Signl Processing in Acoustics Session 4SP: Sensor Arry Bemforming nd Its Applictions
More informationCalculation of Off-Core Inductance in Dual-Circuit Model of Transformer
Clcultion of Off-Core Inductnce in Dul-Circuit Model of Trnsformer As Lotfi NTNU Trondheim, Norwy s.lotfi@ntnu.no Hns Kr. Hoidlen NTNU Trondheim, Norwy hns.hoidlen@ntnu.no Nicol Chies Sttoil Trondheim,
More informationExperiment 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 informationUniversity of Dayton Research Institute Dayton, Ohio, Materials Laboratory Wright Patterson AFB, Ohio,
LEAKY PLATE WAVE INSPECTION OF BIAXIAL COMPOSITES Richrd W. Mrtin University of Dyton Reserch Institute Dyton, Ohio, 45469-0001 Dle E. Chimenti Mterils Lortory Wright Ptterson AFB, Ohio, 45433-6533 INTRODUCTION
More informationThree-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 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 informationDirect 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 informationStudy on SLT calibration method of 2-port waveguide DUT
Interntionl Conference on Advnced Electronic cience nd Technology (AET 206) tudy on LT clibrtion method of 2-port wveguide DUT Wenqing Luo, Anyong Hu, Ki Liu nd Xi Chen chool of Electronics nd Informtion
More informationInvestigation of Ground Frequency Characteristics
Journl of Electromgnetic Anlysis nd Applictions, 03, 5, 3-37 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 informationHigh-speed Simulation of the GPRS Link Layer
989 High-speed Simultion of the GPRS Link Lyer J Gozlvez nd J Dunlop Deprtment of Electronic nd Electricl Engineering, University of Strthclyde 204 George St, Glsgow G-lXW, Scotlnd Tel: +44 4 548 206,
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 informationOpen 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 informationPavos Series - Small Aperture ( 5mm) nm Faraday Rotators and Isolators
Trnsmission (%) Isoltion (db) Trnsmission (%) Isoltion (db) Benefits: Pvos Series - Smll Aperture ( 5mm) 1010-1080nm Frdy Rottors nd Isoltors EOT s Pvos Series Frdy Rottors rotte the plne of polrized light
More informationLATEST CALIBRATION OF GLONASS P-CODE TIME RECEIVERS
LATEST CALIBRATION OF GLONASS P-CODE TIME RECEIVERS A. Fos 1, J. Nwroci 2, nd W. Lewndowsi 3 1 Spce Reserch Centre of Polish Acdemy of Sciences, ul. Brtyc 18A, 00-716 Wrsw, Polnd; E-mil: fos@c.ww.pl; Tel.:
More informationCVM-B100 CVM-B150. Power analyzers for panel
Power nlyzers CVM-150 Power nlyzers for pnel Description The nd CVM-150 units re pnel mounted three-phse power nlyzers (dimensions: x nd 144x144 mm, respectively). oth offer 4-qudrnt mesurement (consumption
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 informationSoft 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 informationINSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad
Hll Ticket No Question Pper Code: AEC009 INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigl, Hyderd - 500 043 MODEL QUESTION PAPER Four Yer B.Tech V Semester End Exmintions, Novemer - 2018 Regultions:
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 informationWireless Transmission using Coherent Terahertz Wave with Phase Stabilization
This rticle hs een ccepted nd pulished on J-STAGE in dvnce of copyediting. Content is finl s presented. IEICE Electronics Express, Vol.* No.*,*-* Wireless Trnsmission using Coherent Terhertz Wve with Phse
More informationISSCC 2006 / SESSION 21 / ADVANCED CLOCKING, LOGIC AND SIGNALING TECHNIQUES / 21.5
21.5 A 1.1GHz Chrge-Recovery Logic Visvesh Sthe, Jung-Ying Chueh, Mrios Ppefthymiou University of Michign, Ann Aror, MI Boost Logic is chrge-recovery circuit fmily cple of operting t GHz-clss frequencies
More informationHigh Speed On-Chip Interconnects: Trade offs in Passive Termination
High Speed On-Chip Interconnects: Trde offs in Pssive Termintion Rj Prihr University of Rochester, NY, USA prihr@ece.rochester.edu Abstrct In this pper, severl pssive termintion schemes for high speed
More informationTwo-layer slotted-waveguide antenna array with broad reflection/gain bandwidth at millimetre-wave frequencies
Two-lyer slotted-wveguide ntenn rry with rod reflection/gin ndwidth t millimetre-wve frequencies S.-S. Oh, J.-W. Lee, M.-S. Song nd Y.-S. Kim Astrct: A 24 24 slotted-wveguide rry ntenn is presented in
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 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 informationPower System Stability Enhancement By UPFC Based Power Oscillation Damping Controller
Power System Stility Enhncement By Bsed Power Oscilltion Dmping r. Sntosh Kumr ripthi Associte Professor, Deprtment of Electricl Engineering, B.N. College of Engineering & echnology, Lucnow, Uttr Prdesh,
More informationDesign and implementation of a high-speed bit-serial SFQ adder based on the binary decision diagram
INSTITUTE OFPHYSICS PUBLISHING Supercond. Sci. Technol. 16 (23) 1497 152 SUPERCONDUCTORSCIENCE AND TECHNOLOGY PII: S953-248(3)67111-3 Design nd implementtion of high-speed it-seril SFQ dder sed on the
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 informationInvestigation of propagation of partial discharges in power transformers and techniques for locating the discharge
Investigtion of propgtion of prtil dischrges in power trnsformers nd techniques for locting the dischrge S.N. Hettiwtte, Z.D. Wng nd P.A. Crossley Astrct: The loction of prtil dischrges in power trnsformer
More informationPostprint. 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 informationGalvanic Isolation System for Multiple Gate Drivers with Inductive Power Transfer
Glvnic Isoltion System for Multiple Gte Drivers with Inductive Power Trnsfer Drive of Three-phse inverter Keisuke Kusk, Mskzu Kto Dept. of Energy nd Environment Science Ngok University of Technology Ngok,
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 informationControl of high-frequency AC link electronic transformer
Control of high-frequency AC link electronic trnsformer H. Krishnswmi nd V. Rmnrynn Astrct: An isolted high-frequency link AC/AC converter is termed n electronic trnsformer. The electronic trnsformer hs
More informationSafety 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 informationAvailable online at ScienceDirect. 6th CIRP International Conference on High Performance Cutting, HPC2014
Aville online t www.sciencedirect.com ScienceDirect Procedi CIRP 4 ( 4 ) 76 8 6th CIRP Conference on High Performnce Cutting, HPC4 Investigting Eccentricity Effects in Turn-Milling Opertions Emre Uysl,Umut
More informationSolutions to exercise 1 in ETS052 Computer Communication
Solutions to exercise in TS52 Computer Communiction 23 Septemer, 23 If it occupies millisecond = 3 seconds, then second is occupied y 3 = 3 its = kps. kps If it occupies 2 microseconds = 2 6 seconds, then
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 informationPRO LIGNO Vol. 11 N pp
THE INFLUENCE OF THE TOOL POINT ANGLE AND FEED RATE ON THE DELAMINATION AT DRILLING OF PRE-LAMINATED PARTICLEBOARD Mihi ISPAS Prof.dr.eng. Trnsilvni University of Brsov Fculty of Wood Engineering Address:
More informationFuzzy 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 informationURL (IET Digital Library):
J. Beerten, S. D Arco nd J.A. Suul, Frequency-dependent cle modelling for smll-signl stility nlysis of VSC-HVDC systems, IET Genertion, Trnsmission & Distriution, vol, no. 6, Apr. 26, pp. 37-38. Digitl
More informationModeling 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 informationThe Math Learning Center PO Box 12929, Salem, Oregon Math Learning Center
Resource Overview Quntile Mesure: Skill or Concept: 300Q Model the concept of ddition for sums to 10. (QT N 36) Model the concept of sutrction using numers less thn or equl to 10. (QT N 37) Write ddition
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 1-1 1.1 Overview 1-1 2. Preprtion 2-1 2.1 2.2 2.3 Removl tool Adhesive
More informationPOWER QUALITY IMPROVEMENT BY SRF BASED CONTROL USING DYNAMIC VOLTAGE RESTORER (DVR)
Interntionl Journl of Electricl Engineering & Technology (IJEET) Volume 9, Issue 1, Jn-Fe 2018, pp. 51 57, rticle ID: IJEET_09_01_005 ville online t http://www.ieme.com/ijeet/issues.sp?jtype=ijeet&vtype=9&itype=1
More informationY9.ET1.3 Implementation of Secure Energy Management against Cyber/physical Attacks for FREEDM System
Y9.ET1.3 Implementtion of Secure Energy ngement ginst Cyber/physicl Attcks for FREED System Project Leder: Fculty: Students: Dr. Bruce cillin Dr. o-yuen Chow Jie Dun 1. Project Gols Develop resilient cyber-physicl
More informationModule 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 informationFPGA Based Five-Phase Sinusoidal PWM Generator
22 IEEE Interntionl Conference on Power nd Energy (PECon), 25 Decemer 22, Kot Kinlu Sh, Mlysi FPGA Bsed FivePhse Sinusoidl PWM Genertor Tole Sutikno Dept. of Electricl Engineering Universits Ahmd Dhln
More informationDSP-based PLL-controlled khz 20 kw highfrequency induction heating system for surface hardening and welding applications
DSP-sed PLL-controlled 5 1 khz 2 kw highfrequency induction heting system for surfce hrdening nd welding pplictions N.S. Byındır, O. K.ukrer nd M. Ykup Astrct: A digitl signl processor (DSP)-sed phselocked
More informationTHE STUDY ON THE PLASMA GENERATOR THEORY FOR THIN DISC AND THIN RING CONFIGURATION
Interntionl Journl of Innovtive Reserch in Advnced Engineering (IJIRAE) ISSN: 249-216 Issue 09, olume 4 (Septemer 2017) www.ijire.com THE STUDY ON THE PLASMA GENERATOR THEORY FOR THIN DISC AND THIN RING
More informationMAXIMUM FLOWS IN FUZZY NETWORKS WITH FUNNEL-SHAPED NODES
MAXIMUM FLOWS IN FUZZY NETWORKS WITH FUNNEL-SHAPED NODES Romn V. Tyshchuk Informtion Systems Deprtment, AMI corportion, Donetsk, Ukrine E-mil: rt_science@hotmil.com 1 INTRODUCTION During the considertion
More informationTwo-electrode biopotential amplifier with current-driven inputs
Two-electrode iopotentil mplifier with current-driven inputs D. Dorev I. Dsklov Centre of Biomedicl Engineering, Bulgrin Acdemy of Sciences, Sofi, Bulgri Astrct A circuit ws developed for differentil two-electrode
More informationArc Furnace Modeling in ATP-EMTP
Arc Furnce Modeling in ATP-EMTP E. A. Cno Plt, Member, IEEE, nd H. E. Tcc, Member, IEEE Abstrct The use of the rc furnce nd its influence on the power system is being studied. A set of models tht llows
More informationDesign and Modeling of Substrate Integrated Waveguide based Antenna to Study the Effect of Different Dielectric Materials
Design nd Modeling of Substrte Integrted Wveguide bsed Antenn to Study the Effect of Different Dielectric Mterils Jgmeet Kour 1, Gurpdm Singh 1, Sndeep Ary 2 1Deprtment of Electronics nd Communiction Engineering,
More informationCharacterization of 3x3 and 4x4 multimode interference couplers in InP generic photonic integration technology
Chrcteriztion of x nd x multimode interference couplers in InP generic photonic integrtion technology Cittion for pulished version (APA): Pustkhod, D., Jing, X., vn Vliet, E. M., Willims, K. A., & Leijtens,
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 informationDesign of Non-Uniformly Excited Linear Slot Arrays Fed by Coplanar Waveguide
Design of Non-Uniformly Excited Liner Slot Arrys Fed by Coplnr Wveguide 533 25 x Design of Non-Uniformly Excited Liner Slot Arrys Fed by Coplnr Wveguide JP Jcobs, J Joubert nd JW Odendl University of Pretori
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 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 chrge-control techniques commonly used when chrging Ni-MI
More informationDesign of UHF Fractal Antenna for Localized Near-Field RFID Application
1 Design of UHF Frctl Antenn for Loclized Ner-Field RFID Appliction Yonghui To, Erfu Yng, Yxin Dong, nd Gng Wng, Memer, IEEE Astrct In this pper, frctl structure is proposed for loclized ner-field UHF
More informationDetermine currents I 1 to I 3 in the circuit of Fig. P2.14. Solution: For the loop containing the 18-V 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 18-V source, Hence, 1 = 1.5 A. KCL t node
More informationTransformer Internal Fault Modeling in ATP
Trnsformer Internl Fult Modeling in ATP A. Avendño, B. A. Mork, H. K. Høidlen Astrct An importnt spect to investigte wen designing trnsformer protection scemes is te protection ginst internl fults. Altoug
More information