Five-phase induction motor drive for weak and remote grid system

Transcription

1 MuliCraf Inernaional Journal of Engineering, Science and Technology ol., No., 00, pp INTERNTIONL JOURNL OF ENGINEERING, SCIENCE ND TECHNOLOGY 00 Mulicraf Limied. ll righ reerved Five-phae inducion moor drive for weak and remoe grid yem Shaikh Moinoddin, if Iqbal* and 3 Elmahdi M. Elherif,3 Deparmen of Elecronic & Compuer Engineering, Sebha Univeriy, Sebha, LIY *Deparmen of Elecrical Engineering, ligarh Mulim Univeriy, ligarh, INDI * Correponding uhor aif_iqbal@rediffmail.com, if Iqbal; Tel brac Muli-phae more han hree-phae moor drive yem have araced much aenion in recen year due o ome inheren advanage which hey offer when compared o he hree-phae counerpar. Preenly he grid power available i only limied o hree-phae o he upply o muli-phae moor i invariably given from power elecronic converer. Thu he paper focue on he inverer conrolled five-phae inducion moor drive yem for variable peed applicaion. The paper preen inverer conrol mehod for five-phae variable peed inducion moor drive. The propoed oluion may be employed in he applicaion no ruiring very precie poiion and peed conrol uch a waer pumping epecially in weak grid yem wih poor power qualiy. The inverer i operaed in differen operaing mode wih conducion angle varying from 80 o 08 conducion mode and he performance i evaluaed in erm of he harmonic conen in he oupu phae volage. I i hown ha opimum performance i achieved by operaing inverer a 44 conducion mode. Experimenal and analyical reul are included in he paper. Keyword: olage ource inverer, en-ep operaion, conducion mode, power grid, Inducion moor drive. Inroducion ariable peed elecric drive predominaely uilie hree-phae machine. However, ince he variable peed ac drive ruire a power elecronic converer for heir upply in va majoriy of cae an inverer wih a dc link, he number of machine phae i eenially no limied. Thi ha led o an increae in he inere in muli-phae ac drive applicaion, ince muli-phae machine offer ome inheren advanage over heir hree-phae counerpar. Inereing reearch reul have been publihed over he year on muli-phae drive and deailed review i available in gh 00, Jone and Levi 00, ojoi e al. 006, Levi e al. 007, Levi 008a and Levi 008b. Major advanage of uing a muli-phae machine inead of a hree-phae machine are higher orque deniy, greaer efficiency, reduced orque pulaion, greaer faul olerance, and reducion in he ruired raing per inverer leg and herefore impler and more reliable power condiioning uipmen. Noie characeriic of muli-phae drive are beer when compared hree-phae drive a demonraed by Hodge e al. 00 and Golubev and Ignaenko 000. Higher Phae number yield mooher orque due o he imulaneou increae of he fruency of he orque pulaion and reducion of he orque ripple magniude, a preened bywilliamon and Smih 006 and pley 006. Higher orque deniy in a muli-phae machine i poible becaue fundamenal paial field harmonic and pace harmonic field can be ued o enhance oal orque a preened by u e al. 00a and u e al. 00b, Shi e al. 00, Lyra and Lipo 00, Duran e al. 008 and rahal and Duran 00. Thi advanage of enhanced orque producion em from he fac ha vecor conrol of he machine flux and orque, produced by he ineracion of he fundamenal field componen and he fundamenal aor curren componen, ruire only wo aor curren d-q curren componen. In a muli-phae machine, wih a lea five phae or more, here are herefore addiional degree of freedom, which can be uilied o enhance he orque producion hrough injecion of higher order curren harmonic. The abiliy analyi of five-phae drive yem for harmonic injecion cheme i carried ou by Duran e al. 008 for boh concenraed winding and diribued winding machine. I wa concluded ha he 3 rd harmonic injecion no only enhance he orque producion bu alo offer a more able conrol rucure. The udie on muli-phae drive yem carried ou o far i for high performance variable peed applicaion. Muli-phae drive i een a a eriou conender for niche applicaion uch a hip propulion, racion, elecric vehicle and in afey criical

2 37 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp applicaion ruiring high degree of redundancy. However, general purpoe drive applicaion uing muli-phae machine are no ye inveigaed in deail. Thi paper advocae he ue of a five-phae drive yem for general purpoe applicaion uch a waer pumping in remoe and weak grid locaion where he power qualiy i no aduae for operaing ophiicaed microproceor baed conroller due o heir ringen power qualiy ruiremen. Furher, he co of uch high performance drive yem are oo high o be borne by poor farmer in remoe locaion. The queion hen arie why five-phae drive i a all ruired no convenional hree-phae drive. The anwer lie in he faul oleran characeriic, reliable and higher efficiency of five-phae drive compared o hree-phae drive deailed by pley e al. 006, rhal and Duran 008. The power elecronic converer upplying muli-phae drive are conrolled uing advanced digial ignal proceor DSP and Field programmable Gae rray FPG. Many modulaion echnique implemened uing DSP and FPG are propoed in he lieraure for conrolling he muli-phae power elecronic converer, Iqbal and Levi 00. In conra hi paper propoe imple, reliable and cheap conroller circui uing analogue componen and quare wave operaion of a five-phae volage ource inverer SI. In environmen of weak grid wih poor power qualiy, epped operaion of volage ource inverer may be conidered a more viable oluion in comparion o PWM mode. Thi paper hu analye he performance of a five-phae inducion moor drive upplied by a five-phae SI operaing in quare wave mode. Conducion angle i varied from 80 leading o en-ep operaion o 08. deailed comparion of inverer performance on variou conducion angle i elaboraed. I will be hown ha a rade off exi beween he fundamenal oupu volage and heir harmonic conen. nalyical, imulaion and experimenal reul are provided. The paper i organied in en differen ecion; fir ecion deail he lieraure review and laid down he need of he propoed drive opology, modelling of a five-phae SI i illuraed in he econd ecion, hird ecion elaborae he propoed five-phae inducion moor drive rucure. Fourh ecion decribe he gae drive circui for he five-phae SI and fifh ecion dicue he experimenal reul obained for eing of he fabricaed inverer, he analyi of reul, and compare he magniude of orque pulaion in a hree-phae and a five-phae drive yem hen ixh ecion conclude he finding followed by he reference.. Modelling of a five-phae SI-review Power circui opology of a five-phae SI, i hown in Figure. Each wich in he circui coni of wo power emiconducor device, conneced in ani-parallel. One of hee i a fully conrollable emiconducor, uch a a bipolar ranior or IGT, while he econd one i a diode. The inpu of he inverer i a dc volage, which i regarded furher on a being conan. The inverer oupu are denoed in Figure wih lower cae leer a,b,c,d,e, while he poin of connecion of he oupu o inverer leg have ymbol in capial leer,,c,d,e, The hif beween each phae volage i 360/7. dc E N v a v b v e ea e b n Figure. Five-phae volage ource inverer power circui. Phae-o-neural volage of he ar conneced load are mo eaily found by defining a volage difference beween he ar poin n of he load and he negaive rail of he dc bu N. The following correlaion hen hold rue: v v v v v v v C D E v a b v v c v d e v v v v nn nn nn nn nn ce he phae volage in a ar conneced load um o zero, ummaion of he uaion yield e e

3 38 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp nn v v v v v v C D E Subiuion of ino yield phae-o-neural volage of he load in he following form: a 4 v v vc vd ve 4 v v vc vd ve vc v v vd ve 4 vd v v vc ve 4 v v v v v v v b v 4 3 c v d v e E 3. Five-phae drive rucure C D imple open-loop five-phae drive rucure i elaboraed in Figure. The dc link volage i adjued from he conrolled recifier by varying he conducion angle of he hyrior. The fruency of he fundamenal oupu i conrolled from he IGT baed volage ource inverer. The inverer i operaing in he quai quare wave mode inead of more complex PWM mode. Thu he overall conrol cheme i imilar o a hree-phae drive yem. ce he inverer i operaing in quare wave mode he analogue circui baed conroller i much impler and cheaper compared o more ophiicaed digial ignal proceor baed conrol cheme. Thi ype of oluion i very cheap and convenien for ue in coare applicaion uch a waer pumping. Thee ype of applicaion do no ruire fa dynamic repone of drive yem and hu he need of high performance conrol cheme do no arie. The power qualiy of he remoe locaion in developing counrie uch a Indian ubconinen are no aduae for reliable and durable operaion of eniive microproceor/microconroller/digial ignal proceor baed conroller. I i hu inended o develop cheap and robu conroller baed on imple, and reliable analogue circui componen for uch locaion. The ubuen ecion decribe he implanaion iue of conrol of a five-phae volage ource inverer. The moivaion behind chooing hi rucure lie in he faul oleran naure of a five-phae drive yem pley e al., 006. Conrolled Recifier L f Inverer C f LINK -phae IM dc Figure. Five-phae inducion Moor Drive rucure. f 4. nalogue circui baed five-phae volage ource inverer To e he epped operaion in variou conducion mode, a five-phae IGT baed prooype inverer i buil in he laboraory, he block diagram of he conrol circui of he Inverer i preened in Figure 3.

4 3 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Hz -0- Phae Shifing Circui Non-Inv. Sh. Tr.& Wave Shaping Ck- Non-Inv. Sh. Tr.& Wave Shaping Ck-n Invering Sh.Tr.& Wave Shaping Ck- Iolaion & Driver Circui P- Iolaion & Driver Circui P-n h Iolaion & Driver Circui N- To gae of P-bank IGT Leg-olage Invering Sh.Tr.& Wave Shaping Ck-n Iolaion & Driver Circui N-n h Figure 3. lock diagram of he complee conrol circui. To gae of N-bank Mofe Elecric upply i aken from a ingle-phae grid and i convered o -0- uing a ranformer, which i fed o he phae hifing circui, o provide appropriae phae hif i.e. 7 beween each phae for operaion a variou conducion angle. Here he phae hif i achieved a 0 Hz. However, for oher han 0 Hz he ruired phae hif can be achieved uing variable reiance in RC nework of phae hifing circui. The phae hifed ignal i hen fed o he invering/non-invering Schmi rigger circui and wave haping circui block which conain zero croing deecor. The proceed ignal i hen fed o he iolaion and driver circui which i hen finally given o he gae of IGT. There are wo eparae circui for upper and lower leg of he inverer. NOT gae are no ued o give complemened gae drive for lower leg device, becaue complemen of 44 i 6 i.e. lower device hall be ON for 6.. Reul and dicuion.. Five-phae SI eing Experimen i conduced for epped operaion of five-phae volage ource inverer wih 80 claical and 44 propoed conducion mode for ar conneced five-phae reiive load a fir. ingle-phae upply i given o he conrol circui hrough he phae hifing nework. The oupu of he phae hifing circui provide he ruired five-phae oupu volage by appropriaely uning i a hown in Figure 4. Thee five-phae ignal are hen furher proceed o generae he pule o he gae drive circui. I i imporan o emphaie here ha he poor power qualiy of he upply can be een from he diored waveform of Figure 4. Thi i he power qualiy available in he laboraory eup, and hu he imporance of he propoed oluion can be underood a he remoe locaion. -

5 40 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Figure 4. Five-phae oupu obained from phae hifing nework Conducion mode Each wich i aumed o conduc for 80, leading o he operaion in he en-ep mode. Phae delay beween firing of wo wiche in any ubuen wo phae i ual o 360 / 7. The correponding phae volage hu obained are hown in Figure, keeping he dc link volage a 60. The waveform i in en ep and i in full compliance wih he finding of Ward and Harer 6. Figure. Oupu phae a-d volage for 80 conducion mode. There are wo yem of line volage in a five-phae yem namely adjacen and non-adjacen wih phae hif of 7 and 44, repecively. djacen line volage have lower magniude compared o he non-adjacen line volage. Non-adjacen line volage hu obained i hown in Figure 6. ll curren are meaured uing ac/dc curren probe giving oupu of 00 m/.

6 4 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Figure 6. Non-adjacen line volage for 80 conducion mode wih dc link volage ual o conducion mode The gae drive ignal i uch ha each power wich remain on for 44 or 80% duy cycle and remain floaing for 36 or 0% duy cycle. Thi mode hu provide an inheren dead band in he wiching of wo power wiche of he ame leg. The oupu from he wave haping circui and he gae drive for wo leg are hown in Figure 7 and Figure 8, repecively. The correponding phae-o-neural oupu volage for phae a i hown in Figure. Non-adjacen line volage i preened in Figure 0. Figure 7. Oupu of wave haping circui for 44 conducion mode for leg -.

7 4 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Figure 8. Gae Drive ignal for leg - for 44 conducion mode. Figure. Oupu phae a-d volage for 44 conducion mode. Figure 0. Non-adjacen line volage for 44 conducion mode wih dc link volage ual o Harmonic profile and orque pulaion reducion... Inverer oupu waveform analyi Thi ecion preen he comprehenive analyi of experimenal reul. The performance of wo differen conducion mode are elaboraed in erm of he harmonic conen in he phae volage, line volage and he diorion in he ac ide line curren. The Fourier erie of he phae-o-neural volage for 80 conducion mode i obained a;

8 43 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp v in in 3 in 7 in in in From 4 i follow ha he fundamenal componen of he oupu phae-o-neural volage ha an RMS value ual o dc The Fourier erie of he phae-o-neural volage for 44 conducion mode i obained a; v co n in n dc 0 n n,,3.. From 6 i follow ha he fundamenal componen of he oupu phae-o-neural volage ha an RMS value ual o 6 dc co The lo in fundamenal volage in 44 conducion mode i of he order of 4.8% compared o 80 conducion mode. Thi lo will affec he lo of orque in he driven machine and ubuenly he laod will be affeced. However, he drop in he orque i no very ignifican compared o he benefi obained due o beer harmonic performance. The harmonic analyi of, line volage and inpu ac ide line curren i carried ou for differen conducion mode and he reuling waveform are hown in Figure - 4. The inpu ide C curren of converer conain odd and even harmonic Figure 4 for 44 conducion mode while a ypical pecrum i depiced for 80 conducion mode. 7 Figure. Specrum of non-adjacen line volage ac for 80 conducion mode for dc link volageof 80. Figure. Specrum of inpu ide curren for 80 conducion mode..

9 44 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Figure 3. Specrum of non-adjacen line ac volage for 44 conducion mode for dc link volage of 80. Figure 4. Specrum of inpu ide curren for 44 conducion mode. Performance comparion in erm of harmonic conen in oupu phae volage, oupu non-adjacen line volage and inpu ac ide curren for differen conducion mode are preened in Figure -7. I i clearly een ha he harmonic conen reduce ignificanly wih reducion in conducion angle. The harmonic conen i large in 80 degree conducion mode and i i lea in 44 degree conducion mode. However, he be uiliaion of available dc link volage i poible wih convenional en ep mode 80 degree conducion mode. I can hu be concluded ha a rade-off exi beween he lo in fundamenal and correponding gain in erm of lower harmonic conen in oupu waveform i obained by uing 44 degree conducion mode.

10 4 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Phae olage Harmonic Comparion Percen of Fundamenal Order of Harmonic Figure. Harmonic conen in oupu phae volage for differen conducion mode. LL-nonadj-Harmonic Comparion 40 3 percen of Fundamenal Order of Harmonic Figure 6. Harmonic conen in oupu phae volage for differen conducion mode. Inpu Curren Harmonic comparion 0 80 Perce of Fundamenal Order of Harmonic Figure 7. Harmonic conen in inpu ide ac curren for differen conducion mode.

11 46 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp comparion of oal harmonic diorion in he oupu phae volage of five-phae volage ource inverer for differen conducion angle i preened in Figure 8. The conducion angle conidered are 80, 6, 44, 6, and 08. Thu wo more conducion ae are included when compared o Figure 6 and Figure 7, o furher prove he uperioriy of conrol a 44 conducion mode. I i oberved from Figure 8 ha he lowe THD i obained for 44 conducion mode. Comparion of Harmonic and THD 4 Percen of Fundamenal deg 6 deg 44 deg 6 deg 08 deg THD Harmonic THD Figure 8. Comparion of Toal Harmonic diorion a variou conducion angle... Five-phae inducion moor drive uing he quai quare wave...80 degree Conducion Mode Five-phae inducion moor i upplied uing he cuom buil five-phae inverer operaing a 80 conducion mode and he dc link volage i e o 00. The moor i allowed o run a one peed correponding o 0 Hz oupu. The reuling non adjacen line volage and he line curren i depiced in Figure. I i oberved from he waveform ha curren I b lead he volage ac by 4 approximaely, ha mean I b i lagging b by 36 becaue phae difference beween ac and b i 0. The pecrum of he line volage and curren are hown in Figure 0 and Figure, repecively. Figure. Non-adjacen line volage ac and I b 80 conducion mode.

12 47 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Figure 0. Line Curren I b harmonic 80 conducion mode Figure. Non-adjacen olage ac Harmonic 80 conducion mode...44 degree Conducion Mode The five-phae inducion moor i furher eed wih he inverer operaing a 44 conducion mode. The reuling line volage and curren waveform are preened in Figure. The correponding harmonic pecrum are hown in Figure 3 and 4. Figure. Non-adjacen L-L ac olage and Line Curren I b 44 conducion mode

13 48 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Here, curren Ib leading he volage ac by abou 36, ha mean I b i lagging b by 4. Here, even harmonic are negligible and h harmonic i no zero. I i becaue of curren flowing hrough he freewheeling diode on inducive load. u harmonic are reduced in comparion o 80 conducion mode. Thee experimenal reul are in full agreemen wih ha of imulaed and analyical finding. Figure 3. Harmonic Specrum of Non-adjacen L-L ac olage 44 conducion mode Figure 4. Harmonic Specrum of Line Curren I b 44 conducion mode..3. Torque pulaion comparion Pulaing orque are produced in an inducion moor drive yem when harmonic curren inerac wih he fundamenal air gap flux and alo when he harmonic air gap flux inerac wih he fundamenal roor curren, oe 00 and Krihnan 00. The pulaing orque caue undeirable effec in he drive yem by producing loe, vibraion and noie. quaniaive aemen of orque pulaion in a hree-phae drive and five-phae drive for epped operaion i done and preened in hi ecion...3. Three-phae drive The predominan harmonic in a hree-phae inducion moor drive are h and 7 h, wih h being backward roaing and 7 h being forward roaing boh leading o 6 h harmonic pulaing orque, oe 00 and Krihnan 00. The expreion for he ixh harmonic pulaing orque i given a; 3 Te 6 P Ψm Ir7 Ir in 6 Ir Ψ m7 Ψm co 6 8 n expreion i derived for he ixh harmonic pulaing orque in erm of fundamenal volage and uivalen circui parameer and i obained a; 3 in7 in in7 in Te 6 80 K in6 co6 4 4 Where P K, and ψ mk i he peak of k h harmonic muual flux, i he fundamenal applied volage, i he uivalen leakage reacance and P i he number of pole of inducion machine

14 4 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Five-phae drive The predominan harmonic in a five-phae machine are h and h, wih h being backward roaing and h being forward roaing boh leading o 0 h harmonic orque, Iqbal e al The deailed derivaion of he orque pulaion i preened in ppendix. The enh harmonic pulaing orque for 80 conducion mode i obained a; [ 0 0 ] 0 T o e0 80 P ψ m Ir Ir Ir ψ m ψ m Co The enh harmonic pulaing orque for 44 conducion mode i obained a; [ 0 0 ] T o e0 44 P ψ m Ir Ir Ir ψ m ψ m Co n expreion i derived for he enh harmonic pulaing orque in erm of fundamenal volage and uivalen circui parameer and i obained a; PZ Dc Te0 80 o [ 0 α ] e0 44 PZ 0 α Where; Z, ZCo α, Z α, α Tan, Dc T o Co [ 0 ] Thu he raio of pulaing orque for a ypical moor in wo conducion mode i obained a; T o e0 44 Co T 0 o e 0 80 Te x Te x0 Te x Te x0 The relaion 3- how, here i reducion in orque ripple in five phae moor a 44 conducion mode by 0% approx when compared wih 80 conducion mode of five phae moor, 700% when compared wih 80 conducion mode of five phae moor, and 778% when compared wih 80 conducion mode of hree phae moor and 44 conducion mode of five phae moor. 6. Concluion The paper preen a oluion of elecric drive yem upplied from weak grid wih poor power qualiy. The propoed oluion lie in he ue of inverer fed five-phae inducion moor drive yem wih epped operaion of he inverer. The inverer i propoed o operae in newly propoed 44 conducion mode. Thi offer beer harmonic performance and hu lower loe, higher efficiency and beer running co. comparion in orque pulaion i alo preened which ugge ignifican reducion in orque pulaion by adoping he propoed 44 conducion mode. nalyical and experimenal approach i ued o validae he finding. Nomenclaure T Tenh Harmonic orque e0 T Sixh Harmonic orque e6 Fundamenal olage Link olage dc v Common mode volage nn

15 0 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp v a v ψ Phae volage Leg olage Flux Linkage ppendix I: Torque Pulaion for 80 conducion mode in a five-phae inducion moor drive Te0 o 80 P[ ψ m Ir Ir 0 Ir ψ m ψ m Co0 ] 0 P Co0 I. The above uaion i he defining uaion of he enh harmonic pulaing orque a given in uaion. fer ubiuing he uaion for magniude of he elevenh harmonic volage componen, he following uaion reul; P 0 0 Co I. Where he fluxe and curren are furher given a; ψ m. ψ m, ψ m, I r, I r, I r, I.3 fer ubiuing he flux and curren relaion from 3 o, he uaion can be wrien a; P 0 Co0 I.4 where,, where, P I. where ZCo α, Z α, Z [ ZCo α 0 Z α Co0 ], α Tan Finally he uaion for he enh harmonic pulaing orque i obained a; PZ T 0 80 e o [ 0 α ]; I.7 Similarly he enh harmonic orque pulaion for 44 conducion mode in a five-phae inducion moor drive i derive a; Te0 o 44 P[ ψ m Ir Ir 0 Ir ψ m ψ m Co0 ] I.8 The above uaion i he defining uaion for he pulaing orque. fer ubiuing he fluxe he following uaion reul; I.6

16 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp Co Co Co Co Co Co P Co P I. 0, 0, 0 Co Co Co where I.0,,,,,. r r r m m m I I I ψ ψ ψ I. Subiuing uaion 0 and ino uaion yield; Co Co Co P I. [ ] [ ] 0 0 0, Co Z ZCo Co P where Co Co Co P Co ce Co α α I.3 0 0,,,, α α α Co Co Tan Z Z ZCo where I.4 Finally he orque uaion for enh harmonic pulaion for 44 conducion i obained a [ ] ; α Co PZ T e o I.

17 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp ppendix II: Swiching diagram for he wo conducion mode: 0 Swiching Diagram For 80 Conducion Mode Swiching Diagram For 44 Conducion Mode

18 3 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp ppendix III Phoograph of he enire e-up: IGT ppendix I: Snubber Circui Phae hifer Iolaing Tranformer Driver Circui Table of componen and heir co For Driver Circui Only Name of componen Specificaion Quaniy Co in Indian Rupee Sep down Tranformer 30 o -0-, 00m 8 40/- Operaional mplifier u /- olage Regulaor IC /- Opo-coupler 4N3 0 0/- Pree 47K 0 0/- Reiance K, 0K, ec /4 W 00 0/- Capacior 0. microf, 000 microf, ec 0 00/- Prined Circui oard general 6 60/- Hardware Screw, nu & bol, ec - 0/- Wooden board /- Terminal amp 0 00/- Toal Co in Indian Rupee 740/- Toal Co in US$ 6.44 cknowledgemen uhor greafully acknowledge he uppor provided by CSIR, New Delhi, India projec no. 040/EMR-II/07 for he work. Reference pley, J.M., Williamon, S., Smih,.C., and arne, M., 006. Inducion moor performance a a funcion of phae number, IEE Proc. Elecric Power pplicaion, ol. 3, No. 6, pp , 006. rahal, M.R. and Duran, M.J., 00. PI uning of Five-phae drive wih hird harmonic injecion, Conrol Engg. Pracice, ol. 7, pp , Feb.

19 4 Moinoddin e al. / Inernaional Journal of Engineering, Science and Technology, ol., No., 00, pp ojoi, R., Farina, F., Profumo, F., and Tenconi, 006. Dual hree inducion machine drive conrol - urvey, IEEE Tran. On Ind. ppl.,ol. 6, No. 4, pp oe,.k., 00. Power Elecronic and C Drive, Prenice Hall, New Jerey. Duran, M.J., Sala, F., rahal, M.R., 008. ifurcaion analyi of five-phae inducion moor drive wih hird harmonic injecion, IEEE Tran. on Ind. Elec. ol., No., pp , May. Golubev,.N., and Ignaenko, S.., 000. Influence of number of aor-winding phae on he noie characeriic of an aynchronou moor, Ruian Elecrical Engineering, ol. 7, No. 6, pp. 4-46, 000. Hodge, C., Williamon, S., and Smih, S., 00. Direc drive propulion moor, Proc. In. Conf. on Elecrical Machine ICEM, ruge, elgium, Paper no Iqbal,., and Levi, E., 00. Space vecor modulaion cheme for a five-phae volage ource inverer, Proc. European Power Elecronic and ppl. Conf., EPE, Dreden, Germany, CD-ROM paper Iqbal,., Moinuddin, S., and Moin,, Sk Quaniaive aemen of orque pulaion in inverer fed five-phae inducion moor drive yem, Proceeding of IEEE Region 0 Conference TENCON 008, Univeriy of Hyderabad, Hyderabad, ndhra Pradeh, India. Paper No Jone, M., and Levi, E., 00. lieraure urvey of ae-of-he-ar in muliphae ac drive, Proc. 37 h In. Univeriie Power Eng. Conf. UPEC, Safford, UK, pp Krihnan, R., 00. Elecric Moor Drive-Modelling, nalyi, and Conrol, Prenice Hall, New Jerey. Levi, E., ojoi, R., Profumo, F., Toliya, H. and Williamon, S., 007. Muli-phae inducion moor drive- echnology au review, IET Elec. Power ppl. ol., No. 4, pp Levi, E., 008a. Gue ediorial, IEEE Tran. Ind. Elecronic, ol., No., May, pp Levi, E., 008b. Muli-phae machine for variable peed applicaion, IEEE Tran. Ind. Elec., ol., No., May, pp Lyra, R.,O., C., and Lipo, T.,. 00. Torque deniy improvemen in a ix-phae inducion moor wih hird harmonic curren injecion, IEEE Tran. Ind. ppl., ol. 38, No., pp , Sep./Oc. gh, G.K., 00. Muli-phae inducion machine drive reearch a urvey, Elecric Power Syem Reearch, ol. 6, pp Shi, R., Toliya, H.., and El-nably,., 00. Field oriened conrol of five-phae ynchronou relucance moor drive wih flexible 3 rd harmonic curren injecion for high pecific orque, Conf. Rec. IEEE IS nnual Meeing, Chicago, IL, pp Ward, E.E., and H arer, H., 6. Preliminary inveigaion of an inverer-fed -phae inducion moor, Proc. IEE ol. 6, No. 6, pp u, H., Toliya, H., and Peeren, L. J., 00a, Five-phae inducion moor drive wih DSP-baed conrol yem, Proc. IEEE In. Elec. Mach. nd Drive Conf. IEM00, Cambrdige, M, pp u, H., Toliya, H., and Peeren, L. J., 00b. Roor field oriened conrol of a five-phae inducion moor wih he combined fundamenal and hird harmonic injecion, Proc. IEEE pplied Power Elec. Conf. PEC, naheim, C, pp , 00. Williamon, S., and Smih, S., 003. Pulaing orque and loe in muliphae inducion machine, IEEE Tran. On Ind. ppl. ol. 3, No. 4, pp iographical noe Shaikh Moinuddin received hi.e. and M.Tech Elecrical, PhD on muli-phae inverer modeling and conrol, degree in 6, and 00 repecively, from he ligarh Mulim Univeriy, ligarh, India. He i recipien of Univeriy Gold Medal for anding fir in Elecrical branch and in all branche of Engineering in 6.E. exam. He ha erved Indian ir Force from 7 o 87. He i employed in he Univeriy Polyechnic, ligarh Mulim Univeriy ince 87 where he i currenly working a a ian Profeor. Hi principal area of reearch inere i Power Elecronic and Elecric Drive. if Iqbal received hi.sc. and M.Sc. Engineering Elecrical degree in and 6, repecively, from he ligarh Mulim Univeriy, ligarh, India and PhD in 006 from Liverpool John Moore Univeriy, UK. He ha been employed a Lecurer in he Deparmen of Elecrical Engineering, ligarh Mulim Univeriy, ligarh ince and i working a ociae Profeor in he ame univeriy. He i preenly wih Texa &M Univeriy a Qaar on reearch aignmen. He i recipien of Maulana Tufail hmad Gold Medal for anding fir a.sc. Engg. Exam in a MU, and EPSRC, Gov. Of UK, fellowhip from for puruing PhD udie. Hi principal reearch inere i Modelling and Conrol of Power Elecronic Converer & Drive. Elmahdi M. Elherif received hi. Sc. on Elecrical and Elecronic Engineering degree in 87 from he Garyoune Univeriy, enghazi, Libya, M.Sc. on Elecrical Power Engineering and Managemen and PhD on load fruency conrol, in 4 and 00 repecively, from Dundee Univeriy Scoland. He i working a Head of Deparmen of Elecronic and Compuer Engineering, Sebha Univeriy, Libya. Hi principal reearch inere i load flow analyi, conrol of auomaic generaion & drive. Received, January 00 cceped, February 00 Final accepance in revied form, pril 00