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Hybrid Renewa.le Energy Source Combined Dyna.ic Volta.e Restorer for Power Qua.ity Improvement

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Computer Systems Science & Engineering 2022年第2期40卷 517-538页

作者： N.kanagaraj Electrica. Engineering Depa.tment College of EngineeringPrince Sattam Bin Abdulaziz UniversityWadi Aldawasir11991Saudi Arabia

In this pa.er,the hybrid photovolta.c-thermoelectric genera.or(PVTEG)combined dyna.ic volta.e restorer(DVR)system is proposed for the power qua.ity disturba.ces compensa.ion in a.single-pha.e distribution *** sta.le a.d precise level of input volta.e is essentia. for the smooth a.d trouble-free opera.ion of the electrica.ly sensitive loa.s which a.e connected a. the utility side to a.oid system *** this context,the hybrid PV-TEG energy module combined DVR system is proposed in this *** the support of the hybrid energy module,the DVR will perform the power qua.ity disturba.ces compensa.ion effectively with needed volta.e a.d/or *** the proposed system,the PV a.d TEG energy sources a.e connected electrica.ly in series to produce a.equa.e volta.e for the DVR opera.ion a.d the fra.tiona. fa.tor-ba.ed va.ia.le incrementa. conduction(FFVINC)ma.imum power point tra.king(MPPT)control a.gorithm is employed to extra.t the possible ma.imum power from the PV *** intelligent fuzzy logic controller(FLC)is chosen for implementing the MPPT control *** ha.f-bridge volta.e source inverter(VSI)circuit a.d in-pha.e volta.e compensa.ion technique a.e used in the DVR for better power qua.ity disturba.ces *** performa.ce a.d usefulness of the proposed DVR system a.e investiga.ed by a. extensive simula.ion study with four different modes of opera.ion,the study results a.e confirmed tha. the proposed system promptly identifies the power qua.ity disturba.ces for ***,the investiga.ion proved tha. the combined PV a.d TEG energy module ca. provide better energy efficiency in converting sola. irra.ia.ion into electricity.

关键词： Power qua.ity compensa.ion MPPT hybrid energy module DVR

a. a.a.tive Neuro-Fuzzy Inference System to Improve Fra.tiona. Order Controller Performa.ce

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Intelligent a.toma.ion & Soft Computing 2023年第3期35卷 3213-3226页

作者： N.kanagaraj Electrica. Engineering Depa.tment College of Engineering at Wadi Al-dawasirPrince Sattam Bin Abdulaziz UniversityWadi Al-dawasir11991Saudi Arabia

The design a.d a.a.ysis of a.fra.tiona. order proportiona. integra. deri-va.e(FOPID)controller integra.ed with a. a.a.tive neuro-fuzzy inference system(a.FIS)is proposed in this study.a.rst order plus dela. time pla.t model ha. been used to va.ida.e the a.FIS combined FOPID control *** the pro-posed a.a.tive control structure,the intelligent a.FIS wa. designed such tha. it will dyna.ica.ly a.just the fra.tiona. order fa.tors(λa.dµ)of the FOPID(a.so known a. PIλDµ)controller to a.hieve better control *** the pla.t experiences uncerta.nties like externa. loa. disturba.ces or sudden cha.ges in the input pa.a.eters,the sta.ility a.d robustness of the system ca. be a.hieved effec-tively with the proposed control ***,a.modiﬁed structure of the FOPID controller ha. been used in the present system to enha.ce the dyna.ic perfor-ma.ce of the *** extensive Ma.La. softwa.e simula.ion study wa. ma.e to verify the usefulness of the proposed control *** study ha. been ca.ried out under different opera.ing conditions such a. externa. disturba.ces a.d sudden cha.ges in input *** results obta.ned using the a.FIS-FOPID control scheme a.e a.so compa.ed to the cla.sica. fra.tiona. order PIλDµa.d conventiona. PID control schemes to va.ida.e the a.va.ta.es of the *** simula.ion results conﬁrm the effectiveness of the a.FIS combined FOPID controller for the chosen pla.t ***,the proposed control scheme outperformed tra.itiona. control methods in va.ious performa.ce metrics such a. rise time,settling time a.d error criteria.

关键词： a.a.tive neuro-fuzzy inference system(a.FIS) fuzzy logic controller fra.tiona. order control PID controller ﬁrst order time dela. system

Synthesis a.d cha.a.teriza.ion of Nd^(3+)-doped Ce_(0.6)Zr_(0.4)O_(2) a.d its doping significa.ce on oxygen stora.e ca.a.ity

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Ra.e Meta.s 2021年第1期40卷 231-236页

作者： Na.esa. Sha.muga.Priya.Cha.dra.oha. Soma.a.i S.kanagaraj Sidda.a.ga.Institute of Technology TumkurKarnataka 572103India India. institute of Technology Guwahati 781039India

Cerium a.d cerium-ba.ed oxides a.e found to be a. importa.t element in three-wa. ca.a.ytic converter(TWC).The effective utiliza.ion of TWC is found to be reduced due to therma. loa.ing which results in structura. deforma.ion of ceria.Doping Zr^(4+)into the ra.e ea.th element ca. increa.e the oxygen stora.e ca.a.ity a.d therma. ***,a. a.tempt wa. ma.e to study the oxygen stora.e ca.a.ity a.d therma. sta.ility of ceria.by doping Zr^(4+)a.d Nd^(3+).Cerium-ba.ed na.ocrysta.lite in the composition of Ce_(0.6)Zr_(0.4-x)Nd_(1.3)xO_(2)(0≤x≤0.4)wa. prepa.ed by sol-gel synthesize technique with citric a.id a. a.gel-forming a.ent.X-ra. diffra.tion(XRD)result shows tha. doping Nd^(3+)into ceria.la.tice forms homogenous solid solution of cubic fluorite structure up to 25%of substitute *** higher a.ount of Nd^(3+)into ceria.la.tice lea.s to the forma.ion of Nd_(2)O_(3).Ra.a. spectrum study confirms tha. oxygen stora.e ca.a.ity ba.d is present in Ce_(0.6)Zr_(0.4)O2 a.d Ce_(0.6)Zr_(0.3)Nd_(0.13)O_(2).The oxygen stora.e ca.a.ity wa. ca.cula.ed through weight loss of the sa.ple during the second hea.ing cycle with cyclic hea.ing from30 to 800℃in thermogra.imetric a.a.ysis(TGa..The TGa.study revea.s tha. the oxygen stora.e ca.a.ity of Ce_(0.6)Zr_(0.4)O2 decrea.es a.ter the substitution of Nd^(3+),which is due to the la.ger ionic ra.ius of Nd^(3+)compa.ed with tha. of Zr4+a.d CeO2.

关键词： Cerium oxide Sol-gel technique Thermogra.imetric a.a.ysis Ionic ra.ius Homogeneous solid solution Oxygen stora.e ca.a.ity

Ma.imum Power Extra.tion Control a.gorithm for Hybrid Renewa.le Energy System

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Computer Systems Science & Engineering 2023年第4期45卷 769-784页

作者： N.kanagaraj Moha.med a.-a.si Electrica. Engineering Depa.tment College of Engineering at Wadi AldawasirPrince Sattam Bin Abdulaziz UniversityWadi Aldawasir11991Saudi Arabia

In this resea.ch,a.modified fra.tiona. order proportiona. integra. deriva.e(FOPID)control method is proposed for the photovolta.c(PV)a.d thermoelectric genera.or(TEG)combined hybrid renewa.le energy *** fa.ter tra.king a.d stea.y-sta.e output a.e a.med a. the suggested ma.imum power point tra.king(MPPT)control *** deriva.ive order number(μ)va.ue in the improved FOPID(a.so known a. PIλDμ)control structure will be dyna.ica.ly upda.ed utilizing the va.ue of cha.ge in PV a.ra. volta.e *** the tra.sient,the va.ue ofμis cha.gea.le;it’s one a. the sta.t a.d a.ter rea.hing the ma.imum power point(MPP),a.lowing for strong tra.king *** will use the freely a.a.la.le wa.te therma. energy crea.ed surrounding the PVa.ra. for a.ditiona. power genera.ion,increa.ing the system’s energy conversion efficiency.a.high-ga.n DC-DC converter circuit is included in the system to ma.nta.n a.high a.plitude DC input volta.e to the inverter *** proposed a.proa.h’s performa.ce wa. investiga.ed using a. extensive Ma.La. softwa.e simula.ion a.d va.ida.ed by compa.ing findings with the perturba.ion a.d observa.ion(P&O)type MPPT control *** study results demonstra.e tha. the FOPID controller-ba.ed MPPT control outperforms the P&O method in ha.vesting the ma.imum power a.hieva.le from the PV-TEG hybrid *** is a.so a.better control a.tion a.d a.fa.ter response.

关键词： Fra.tiona. order PID controller MPPT boost converter PV a.ra. thermoelectric genera.or hybrid renewa.le energy system

Detection of Osteoa.thritis Ba.ed on EHO Thresholding

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Computers, Ma.eria.s & Continua 2022年第6期71卷 5783-5798页

作者： R.Ka.tha.el R.Dha.a.kanagaraj Venusa.y Depa.tment of Computer Engineering King Khalid UniversityAbhaSaudi Arabia Depa.tment of Computer Science King Khalid UniversitySarat Abidha CampusAbhaSaudi Arabia Depa.tment of Engineering University of Technology and Applied SciencesAl MussanahSultanate of Oman

Knee Osteoa.thritis(Oa.is a.joint disea.e tha. is commonly observed in people a.ound the *** commonly a.fects pa.ients who a.e obese a.d those a.ove the a.e of 60.a.va.id knee ima.e wa. genera.ed by Computed Tomogra.hy(CT).In this work,efficient segmenta.ion of CT ima.es using Elepha.t Herding Optimiza.ion(EHO)optimiza.ion is *** initia. sta.e employs,the CT ima.e norma.iza.ion a.d the norma.ized ima.e is incited to ima.e enha.cement through histogra. ***,the enha.ced ima.e is segmented by utilizing Nibla.k a.d Bernsen ***(EHO)optimized outcome is eva.ua.ed in two *** initia. step includes ima.e enha.cement with the mea.ure of Mea. squa.e error(MSE),Pea. signa. to noise ra.io(PSNR)a.d Structura. simila.ity index(SSIM).The following step includes the segmenta.ion which includes the mea.ure ofa.cura.y,Sensitivity a.d *** compa.a.ive a.a.ysis of EHO provides 95%of a.cura.y,94%of specificity a.d 93%of sensitivity tha. tha. of a.tive contour a.d Otsu threshold.

关键词： Osteoa.thritis CT ima.es correla.ion histogra. thresholding Nibla.k&Bernsen a.gorithm EH optimiza.ion

a.Fuzzy Logic Ba.ed Supervisory Hiera.chica. Control Scheme for Rea. Time Pressure Control

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Interna.iona. Journa. of a.toma.ion a.d computing 2009年第1期6卷 88-96页

作者： N. kanagaraj P. Siva.ha.muga. S. Pa.a.a.iva. Depa.tment of Chemica. Engineering National Institute of Technology ESa. Engineering Services Ltd.

This pa.er describes a.supervisory hiera.chica. fuzzy controller （SHFC） for regula.ing pressure in a.rea.-time pilot pressure control system. The input sca.ing fa.tor tuning of a.direct expert controller is ma.e using the error a.d process input pa.a.eters in a.closed loop system in order to obta.n better controller performa.ce for set-point cha.ge a.d loa. disturba.ces. This on-line tuning method reduces opera.or involvement a.d enha.ces the controller performa.ce to a.wide opera.ing ra.ge. The hiera.chica. control scheme consists of a. intelligent upper level supervisory fuzzy controller a.d a.lower level direct fuzzy controller. The upper level controller provides a.mecha.ism to the ma.n goa. of the system a.d the lower level controller delivers the solutions to a.pa.ticula. situa.ion. The control a.gorithm for the proposed scheme ha. been developed a.d tested using a. a.M7 microcontroller-ba.ed embedded ta.get boa.d for a.nonlinea. pressure process ha.ing dea. time. To demonstra.e the effectiveness, the results of the proposed hiera.chica. controller, fuzzy controller a.d conventiona. proportiona.-integra. （PI） controller a.e a.a.yzed. The results prove tha. the SHFC performa.ce is better in terms of sta.ility a.d robustness tha. the conventiona. control methods.

关键词： Pressure control supervisory hiera.chica. fuzzy controller (SHFC) fuzzy controller a.M7 processor embedded controller

Loa. Frequency Control of Multi-interconnected Renewa.le Energy Pla.ts Using Multi-Verse Optimizer

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Computer Systems Science & Engineering 2021年第5期37卷 219-231页

作者： Hega.y Rezk Moha.ed a.Moha.ed a.med a.Za.i Dia. N.kanagaraj College of Engineering a. Wa.i a.da.a.er Prince Sattam Bin Abdulaziz UniversityWadi Addawaser11991Saudi Arabia Electrica. Engineering Depa.tment Faculty of EngineeringMinia UniversityMinia61111Egypt

a.relia.le a.proa.h ba.ed on a.multi-verse optimiza.ion a.gorithm(MVO)for designing loa. frequency control incorpora.ed in multi-interconnected power system comprising wind power a.d photovolta.c(PV)pla.ts is presented in this *** ha. been a.plied for optimizing the control pa.a.eters of the loa. frequency controller(LFC)of the multi-source power system(MSPS).The MSPS includes therma.,ga.,a.d hydro power pla.ts for energy ***,the MSPS is integra.ed with renewa.le energy sources(RES).The MVO a.gorithm is a.plied to a.quire the idea. pa.a.eters of the controller for controlling a.single a.ea.a.d a.multi-a.ea.MSPS integra.ed with *** link is utilized in shunt with a. multi-a.ea. interconnection tie *** proposed scheme ha. a.hieved robust performa.ce a.a.nst the disturba.ce in loa.ing conditions,va.ia.ion of system pa.a.eters,a.d size of step loa. perturba.ion(SLP).Mea.while,the simula.ion outcomes showed a.good dyna.ic performa.ce of the proposed controller.

关键词： Loa. frequency control multi-verse optimiza.ion multi-a.ea.power system renewa.le energy sources

Enha.ced Perturb a.d Observe Control a.gorithm for a.Sta.da.one Domestic Renewa.le Energy System

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Intelligent a.toma.ion & Soft Computing 2023年第8期37卷 2291-2306页

作者： N.kanagaraj Oba.d Ma.tha.a.dosa.y M.Ra.a.a.y M.Vija.a.uma. Electrica. Engineering Depa.tment College of Engineering in Wadi Al-dawasirPrince Sattam Bin Abdulaziz UniversityWadi Al-dawasir11991Saudi Arabia Depa.tment of Electrica. a.d Electronics Engineering K.S.R.College of EngineeringTiruchengode637215India

The genera.ion of electricity,considering environmenta. a.d eco-nomic fa.tors is one of the most importa.t cha.lenges of recent *** this a.ticle,a.thermoelectric genera.or(TEG)is proposed to use the therma. energy of a. electric wa.er hea.er(EWH)to genera.e electricity *** improve the energy conversion efficiency of the TEG,a.fuzzy logic con-troller(FLC)-ba.ed perturb&observe(P&O)type ma.imum power point tra.king(MPPT)control a.gorithm is used in this *** EWH is one of the ma.or electricity consuming household a.plia.ces which ca.ses a.higher electricity price for ***,a.significa.t a.ount of therma. energy genera.ed by EWH is wa.ted every da.,especia.ly during the winter *** recent yea.s,TEGs ha.e been widely developed to convert surplus or unused therma. energy into usa.le *** this context,the proposed model is designed to use the therma. energy stored in the EWH to genera.e *** a.dition,the genera.ed electricity ca. be ea.ily stored in a.ba.tery stora.e system to supply electricity to va.ious household a.plia.ces with *** proposed MPPT control a.gorithm helps the system to quickly rea.h the optima. point corresponding to the ma.imum power output a.d ma.nta.ns the system opera.ing point a. the ma.imum power output *** va.ida.e the usefulness of the proposed scheme,a.study model wa. developed in the Ma.La. Simulink environment a.d its performa.ce wa. investiga.ed by simula.ion under stea.y sta.e a.d tra.sient *** results of the study confirmed tha. the system is ca.a.le of genera.ing a.equa.e power from the a.a.la.le therma. energy of *** wa. a.so found tha. the output power a.d efficiency of the system ca. be improved by ma.nta.ning a.higher tempera.ure difference a. the input termina.s of the ***,the rea.-time tempera.ure da.a.of a.ha.city in Sa.di a.a.ia.is considered to a.a.yze the fea.ibility of the proposed system for pra.tica. implementa.ion.

关键词： Perturb a.d observe control a.gorithm fuzzy logic controller energy conversion efficiency ma.imum power point tra.king thermoelectric genera.or

PsRNa.a.Computing Engine for the Compa.a.ive Identifica.ion of Puta.ive Sma.l RNa.Loca.ions within Intergenic Regions

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Genomics, Proteomics & Bioinforma.ics 2010年第2期8卷 127-134页

作者： Ja.a.el Sridha. Govinda.a. Sowmiya.kanagaraj Seka. Zia.ddin a.a.ed Ra.i Centre of Excellence in Bioinforma.ics School of BiotechnologyMadurai Kamaraj University Bioinforma.ics Centre Indian Institute of Science Supercomputer Educa.ion a.d Resea.ch Centre Indian Institute of Science

Sma.l RNa. （sRNa.） a.e non-coding tra.scripts exerting their functions in the cells directly. Identifica.ion of sRNa. is a.difficult ta.k due to the la.k of clea. sequence a.d structura. bia.es. Most sRNa. a.e identified within genus specific intergenic regions in rela.ed genomes. However, severa. of these regions rema.n un-a.nota.ed due to la.k of sequence homology a.d/or potent sta.istica. identifica.ion tools. a.computa.iona. engine ha. been built to sea.ch within the intergenic regions to identify a.d roughly a.nota.e new puta.ive sRNa.regions in Enteroba.teria.ea. genomes. It utilizes experimenta.ly known sRNa.da.a.a.d their fla.king genes/KEGG Orthology （KO） numbers a. templa.es to identify simila. sRNa.regions in rela.ed query genomes. The sea.ch engine not only ha. the ca.a.ility to loca.e puta.ive intergenic regions for specific sRNa., but a.so ha. the potency to loca.e conserved, shuffled or deleted gene clusters in query genomes. Beca.se it uses the KO terms for loca.ing functiona.ly importa.t regions such a. sRNa., a.y further KO number a.signment to a.ditiona. genes will increa.e the sensitivity. The PsRNa.server is used for the identifica.ion of puta.ive sRNa.regions through the informa.ion retrieved from the sRNa.of interest. The computing engine is a.a.la.le online a. http：//bioserver 1 .***/psrna.a.d http：//***： 8081/psrna..

关键词： sma.l RNA KEGG Orthology fla.king genes intergenic regions