KNOWLEDGE AND TECHNOLOGY TRANSFER: NOVEL RESULTS WHILE TEACHING ADVANCED COURSES

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1 KNOWEGE N EHNOOGY NSFE: NOE ESUS WHIE EHING NE OUSES G.M. mro* W Srafmo Y.-W. Jn 3 an.. nbüün ou Unry ompur En. parmn Faculy of En. cbam 347 Ianbul ury E-mal: mro@ou.u.r SS yrl Mhou Unry SE Inu Faculy of El. En. Sopj.. of Macona E-mal: acor@yahoo.com 3 Norharn Unry Inu of onrol Sc. School of Informaon Sc. En. Shnyan aonn 4 P.. of hna E-mal: ywjjn@poplmal.com.cn brac: Graua u n fl of Ennrn ypcally nclu aanc conrol hory. In urn h cour nhanc boh acamc an appl rarch hnc conrbun o combn nowl an chnoloy ranfr n parcular f uppor by nury a wll. h papr rpor on uch fruful prnc a our unr hrouh h mah-analycal bac-ppn an a-fbac conrol n mhoolo. ompur mulaon an laboraory prmn ha monra h conrollr n po qualy prformanc whch ar comparabl wh h ohr n for h am applcaon. opyrh 5 IF Kywor: anc conrol; bac-ppn; conrol achn; lcrcal powr ym; raua u an rarch; powr lcronc.. INOUION I aru n hr h ynrm of combn nowl an chnoloy ranfr mo fruful ray upporn a farly rap bu uanabl aancmn of lopn counr n nral an nhancn hr rpc har n h mar of auomaon an conrol prouc an rc n parcular nbüün an mro 4. Furhrmor u o h aalably of compur nwor an communcaon chnolo an plann nrnaonal co-opraon lopn counr can ach hr far har n nllcual rc for auomaon an conrol mro 4. h papr ala h abo arumn hrouh an analy cuon of h auhor rcn conrol rul n applcaon o lcrcal powr ym an powr lcronc an co-auhor 3; 3; Srafmo ; Srafmo an mro 4 whl achn aanc cour on conrol o raua un. o h lh on h aformnon rul fr h rpc problm an bacroun rarch ar ouln n Scon. Man rul ar n n Scon 3. oncluon an rfrnc follow hrafr.. IMEY ESEH WHIE EHING NE ONOS In morn lcrc powr nury powr ym ar characrz wh h ncran comply of confuraon an hrfor rucur n ara opra by h rpc conrol cnr ha nur h rqurmn for ay-a ably of h orall ym ar manan Elcrc Powr arch Inu 996 a. In aon o h opraonal cury hr r ncran r for aumn ym uly capacy. Howr h rqurmn ha all ola mu ay whn rc

2 lowr an uppr lm unr any or of urbanc rprnn a ary of chncal conran on of h hr major opraonal rqurmn. Woo an Wollnbr 996. For h raon morn lcrc powr ym mploy ac lcronc hh-powr conrol c o cra o call Flbl ranmon Sym FS an hyror onroll Sr ompnaor S ar ypcal FS c Elcrc Powr arch Inu 996 b. b a F. I. Mol of a nl -machn nfn-bu powr ym mployn S c; a concpual an b n mor al. hyror conroll r compnaor Fur I can pro ola uppor ruc h qualn lcrc anc n a conomc an ffc mo mpro h ampn prformanc facla h conrol of loa flow an nhanc h abl of powr ym wh lon ranmon ln. Nonhl rahr rou ably uaon wh rar o nonlnar ynamc al powr ym opraon can occur pror o powr ym ablz n a ay a Wlbrr 994. onnonal lnar ablzr of S canno p h ym rann ably n h ca whr opraonal conon an ym paramr chan nfcanly Son an Par. hy ar uabl only for mall urbanc abou a ay a opraon pon Zhou an an 999. h n ynh ba on fbac lnarzaon un h ffrnal omrc approach ha h aana n h fac ha h paramr of h ym ha o b acly Gan an co-auhor. B h lcromanc rann cour of S lf no accoun for. h oban conrollr al locally for h lnarz ym only whch no uaran n ncranly -rula opraon of lcrc powr ym. h bac-ppn mho of nonlnar conrol n Krc an co-auhor 995 yl br n bcau of boh: h procural conc n an h aly n procn paramr uncrany. In conrollr n oluon by Shn an co-auhor 999 howr for h cr ym un bac-ppn wh ralcally aum uncrany n paramr h oucom wa an unconrollabl ym rprnaon. I hrfor ha on h roun of non-lnar mol wh uncran Elcrc Powr arch Inu 996 a b δ ω ω ω ω Pm E q S y H y cc cc cc cc n δ ω y y u cc ω ω wo nw bac-ppn oluon ha bn r an pro n an co-auhor 3; 3. h conrol n uaran praccal aympoc ably of h nl-machn-nfnbu SMIB lcrcal powr ym mployn S Fur I rarl h urbanc an araon. h ohr ca uy whl achn aanc conrol hory ha yl a nol conrol n an mplmnaon Srafmo h ola ablzaon of buc-boo conrr BB; Fur II a a-fbac rulaon un pay chnqu Sra-mrz an co-auhor 997. Plan a wch-mo c-c conrr ha nhrnly non-lnar an arabl-rucur ym bcau of lmn uch a o an wch Bo 997; Mohan an co-auhor 995. a F. II. Schmac a an qualn crcu b of a buc-bu conrr BB c. hy ar opra by cr conrol nal whch oban by moulaon of h connuou conrol nal rprnn h conrol law o ma h opolocal rucur of h conrr ary wh m Bo 997. lhouh an nhrnly nonlnar ym lnar connuou mol wr lop.. Wr an Mlbroo 973 n orr o appply fbac conrol hory o arr a abl n of compnaon nwor. n ar al o-call mall-nal mo. If ohrw a larnal mol rqur for propr analy an ynh.. hn an a 99; Sra -amrz an co-auhor 997. Ba on a mlar uy for boo conrr by Graa Srafmo carr ou a lar-nal n ha bn labora for h buc-boo opoloy. h a quaon wh [ ] crbn h bhaour of BB urn h wchn pro whn h wch on an whn h wch off may b rprn a follow:

3 whr b b b. Furhr na of wo mar quaon can b pr a follow or qualnly: b u b u. 3 b u b b u Hr u whn h wch on an u whn off. lobal ably conon wa oban Srafmo an mro 4 un pay chnqu Hll an Moylan 976; Sra-amrz 997 whrby h balanc of aborb an pa powr n h wo -por mol of h rulaor Fur proprly amn. Eprmn ha ala wl compur mulaon rul. 3. ESIGN SE SUIES N HIEE ONO PEFOMNES In h qul h man pon hhlhn h nol rul ar prn an om cuon n. h mulaon rul hown h ach conrol prformanc an monran h aana of h propo n ar u. 3.. Bac-ppn n for S Powr Sym mnon wo bc-ppn n ha bn lop an hr aymp oc ably pro. h fr on wa ba on a mplf con-orr an on for h ohr a hr-orr non-lnar mol nonlnar mol of h plan ynamc an coauhor 3 h oluon for whch brfly prn blow. In ym arabl an ohr phycal quan ar nown o ha h follown mann: δ h roor anl of h nraor; ω h rla p of h nraor; P h mchancal npu powr m of h nraor whch aum a conan; h pr un ampn coffcn conan; H h conan nra; E h rann EMF n h q quarac a of h nraor whch aum a conan; h nfn bu ola; S X X y cc h mpanc of h whol Σ cc ym; X h qualn racanc of S n p. u.; cc Σ X h rnal racanc; an u h conrol npu. I houl b no ha mol an nally non-lnar ym n all rpc. Sym raly ranform no a a-pac rprnaon mol 4 a ω [ P m H H E y n 3 cc δ E ] 4 b 3 3 u 4 c cc whch appropra for h bac-ppn n by fnn a: δ δ ω ω 3 y cc y cc whr δ ω y ar h nal cc alu of corrponn arabl. I phycally juf ha ω ω E S q ar nown. H H Howr conan θ ha o b aum H unnown pobly wh uncrany bcau of paramr an h o b accoun for n h conrol n. Follown h pracc of lcrcal powr ym urbanc cor w [ w w ] can b aum wh w w unnown funcon n pac. Sym 4 hn ranform o: θ Pm 5 a y 3 cc n δ 3 3 u w cc w 5 b 5 c wh [ ] q z 6 q z q q rprnn h rula oupu. Quan q an q ar nonna wh coffcn rprnn h wh proporon of a arabl an no h ym oupu whch ar o b rmn by h nr n ach parcular ca uy. For ym 5-6 wh uncrany paramr an rnal urbanc aap bac-ppn mho can b appl o n nonlnar robu am-al conrollr. Fr houl b no h n procur can b ranform no h pa ym problm hrouh conrucn ora funcon uch ha h ym afyn h upply ra S γ ε z. ha h follown pay nqualy hol for any fnal m > : ε z γ. 7

4 hn h an from h urbanc o h oupu of h ym mallr han or qual o γ. hn a lnhy raon yl h fbac conrol law u 3 cc m m θˆ θˆ Pm 3 y cc n δ m m θˆ Pm n θˆ n m θˆ 3 3 n nγ γ 8a an h paramr upa law m θˆ ˆ ~ 3 θ ρ. 8b n θ Fnally can b hown ha an furhr u an aympoc ably pro Srafmo an mro 4. a 9 γ w z an by nran boh of nqualy 9 h pa nqualy 7 raly oban. Hnc from h urbanc o h oupu h ym po a an. h clo loop rror ynamc c ~ q cq σ θ γ m m θˆ ~ θˆ 3 3 θ nγ γ n f unr h conrol law 8 uaran o b aympocally abl: whn w hn 3 a. From h ry * * fnon of 3 an 3 rpcly follow a onc ha 3 wll alo conr o zro hu h praccal ably ach. h ruln conrol n ha bn amn a compur mulaon of h ampl wh aa n n h lraur Son an Par. In parcular for h rror ym ynamc h mulaon rul ar hown n Fur III an Fur I pc h conrn oluon of aapaon of h uncran paramr n h clo-loop opraon of h n conrol. I apparn from Fur I ha h upa of paramr maon arabl conr rahr qucly o ral-worl alu of h paramr θ. h mlar fa conrnc n lmnan ynamc rror can b nfrr from Fur III 3.. Pay n chnqu for BB c h nol pay-chnqu ba conrol n for a buc-boo c-c conrr BB c; Fur II ha bn lop n Srafmo b c F. III. pon cur of h ym rror ynamc. F. I. pon cur of h upa of paramr maon arabl. h wchn frquncy chon nfcanly hhr han h conrr naural frqunc of cour. Hnc connuou conrol nal u can b approma by a connuou funcon ha na h conrr uy cycl wh a ran of alu n h nral [ ]. In urn h mplfcaon of mol 3 la o h ara mol. u b u Sym a blnar rprnaon of h opran proc of buc-boo conrr BB c. h opran qulbrum a arabl an uy cycl ar um of h alu n h qulbrum pon an h prurb alu

5 . Hnc follow b 3 Sparan h qulbrum pon rmnaon an h ynamc analy 4 b B 5 whr: B 6 B b. Hnc h ym ynamc can b crb by 7. 8 h quaon crb h ncrmnal arabl rlaonhp. hn h lar-nal ably of BB an rpc qulbrum conon can b ablh Srafmo an mro 4. F.. wo -por rprnaon of h wchn crcu rulaor. In parcular h applcaon of pay chnqu ha hown ha conrol law for BB can b n a a pcal lnar combnaon of h a arabl. Onc lar-nal ably uaran h n of r ynamc an robun of h wchn rulaor can b n rorouly. In urn h n can b carr ou un h BB ncrmnal mol.. 9 n for h conrol law ma α h loop an foun o b ma I α ma α Hr h an coffcn ma α oban by a pcal analy of h BB phyc Srafmo. In parcular for BB c wh h paramr alu µh mω µf Ω µ.55 an h qulbrum pon.8 an.6 h an coffcn wa foun ma α -3. For h alu of α ma h clo loop ranfr funcon ha wo qual ral nalu a F. I. Inucor currn rpon urn ar-up from zro nal conon. F. II. Inr capacor ola rpon urn ar-up from zro nal conon. hn boh phycal prmn an mulaon of BB c for h alu ha monra hh-qualy prformanc. Fur I an II how ampl of prmnally ala n rul for h abo pcf BB c an h r conrol law - wh h alu for h an

6 coffcn α ma -3. h qualy prformanc may wll b nfrr form h fur. 4. ONUSION h wo ca of nowl no olly chnoloy ranfr ar rpor ha ha bn prnc rcnly n h b an n on of rahr mall lopn counry. Nol conrol n for lcrcal powr ym mployn hyror conroll r compnaon an for auonomou powr ym mployn powr-lcronc bucboo c-c conrr ha bn labora. h clarly monra h nowl ranfr mor mporan an al an may b ach a carfully alor raua u ha nclu combn bac an aanc conrol hory. In urn h cour nhanc boh acamc an appl rarch an conrbu o combn nowl an chnoloy ranfr. KNOWEGEMEN uhor pr hr rau o h anonymou rwr who rmar hlp o mpro h qualy of h papr. EFEENES Bo B. K. 997 Powr Elcronc an arablfrquncy r chnoloy an pplcaon. h IEEE Pr Nw Yor. hn F. an X. S. a 99. n of fbac conrol law for wchn rulaor ba on h blnar lar-nal mol. IEEE ran. on Powr Elcronc ol. 5 pp mro G. M. 4. owar rual unry parmn: unnn a raua proram a Inrn. In: Procn of h 5 h Inl. onf. on Informaon chnoloy Ba Hhr Eucaon an rann O. Kyana Y. pnar an M. Halr E pp. U h IEEE Pcaaway NJ. nbüün.. an G. M. mro 4. chnoloy ranfr o lopn counr an chnolocal lopmn for ocal ably. In: chnoloy an Inrnaonal Sably SWIIS 3 P. Kopac an. Saplon E pp. I Elr Scnc Ofor UK. Elcrc Powr arch Inu 996 a Bfurcaon hao an ola ollap n Powr Sym. EPI chncal por P EPI r. r. Plaan Hll. Gan. Z. Qu an H. a. Mul-machn powr ym caon conrol n a hor of fbac lnarzaon conrol an non-lnar robu conrol. In. J. Sym Scnc ol. 3 no. 4 pp Graa... onrol of Swchn onrr Un Nonlnar chnqu: Pay Inpu- Oupu narzaon an Nural Nwor Ph h. Polychnc Unry of aalona Barclona. Hll. an J. P. Moylan 976. Sably of nonlnar pa ym. IEEE ran. on uomac onrol Krc M. I. Kanllaopoulo an P.. Koooc 995. Nonlnar an ap onrol n. J. Wly Nw Yor. W.-. Y.-W. Jn G. M. mro an X.-P. u 3. obu nonlnar conrol of S for powr ym a aap bac-ppn. In: Procn of h 3 IEEE onfrnc on onrol pplcaon G. M. mro E ol. pp h IEEE Pcaaway NJ. W ap Nonlnar obu onrol of S Elcrc Powr Sym Un Bac- Sppn Ph h. SI Norharn Unry Shnyan N n hn.. Mohan N.. M. Unlan an W. P. obbn 995. Powr Elcronc: onrr pplcaon an n n.. J. Wly Son Nw Yor. Srafmo.. nar Sa-fbac onrol of Buc-Boo onrr Un Pay chnqu MSc h. FEE SS yrl an Mhou Unry Sopj MK n Maconan. Srafmo. an G. M. mro 4. Swchn Sym: anc onrol n an nal of -o- Powr Supplr. chn.. p. E-UPE-4. ou Unry Ianbul. Shn.. S. W. M Q. u obu nonlnar conrol wh urbanc anuaon for powr ym. In: Procn of h 38 h IEEE onfrnc on con an onrol Phon rzona pp h IEEE Pcaaway NJ. Sra-amrz H... Prz-Morno. Ora an M. Garca-Eban 997. Pay-ba conrollr for ablzaon of -o- powr conrr. uomaca Son K. M. an J. K. Par. On h robu QG conrol of S for ampn powr ym ocllaon. IEEE ran. on Powr Sym ol. 5 no. 4 pp Wr G. an.. Mlbroo 973 "owfrquncy haracrzaon of Swch - onrr" IEEE ran. ropac an Elcronc Sym ol. 9 no. 5 pp Wlbrr.M Sably an nonlnar ynamc n powr ym. EPI Journal ol. 9 no. 4 pp Woo. J. an B. F. Wollnbr 996 Powr Gnraon Opraon an onrol n.. J. Wly Nw Yor. Zhou X. X. an J. an 999. Nonlnar aap conrol of S o mpro h prformanc of powr ym. Procn of Inn. Elcr. Enr. Gnr. ranm. rb. ol pp