Performance Analysis of Double Tuned Passive Filter for Power Quality

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1 I J C T A, 9(7), 06, pp Itertiol Sciece Press ISSN: Performce Alysis of Doule Tued Pssive Filter for Poer Qulity Kumr Reddy Cheepti*, Srdr Ali** d Sury Klvthi M.*** ABSTRACT Poer system lods re clssified i to lier lods d olier lods. The curret i lier lods vries lierly ith the system voltge ut i olier lods the curret does ot vry lierly ith the system voltge. Due to the icresig use of olier lods like poer electroic drives, ridge rectifiers, rc furces, ir coditioers etc. the ijectio of hrmoics (voltge & curret) ito the source icreses, so the totl hrmoic distortio (THD) icreses. My hrmoic mitigtio techiques re ville to improve the poer qulity. I this proposed pper doule tued pssive filter s desiged ith the prmeters of to prllel sigle tued pssive filters. The results re simulted usig MATAB SIMUINK softre. Keyords: olier lods; ridge rectifiers; totl hrmoic distortio; sigle tued filter; doule tued filter.. INTRODUCTION No dy s my lods re olier i ture due to the expoetil use of poer electroic compoets. This olier lod ijects hrmoics i to the systems d utilities re ot le to give good qulity of poer to its cosumers. Accordig to IEEE Recommeded Prctice for Moitorig Poer Qulity (IEEE Std ), the Poer qulity is defied s cocept of poerig d groudig sesitive equipmet i mer tht is suitle for opertio of tht equipmet. Whe the hrmoics re itroduced ito the system the siusoidl voltge d curret gets distured or devited from the fudmetl frequecy due to tht the lods my get dmged due to the hrmoic effects. Hrmoics leds to copper loss, iro loss, dielectric loss d therml stress i cles, trsformers d rottig mchies []. The Poer Qulity c e improved y reducig THD. I distriutio side filters re used to mitigte hrmoics d to improve poer qulity. The hrmoic filters re mily clssified ito ctive d pssive filters. The pssive filters re su clssified ito lo pss d high pss filters. o pss filters (PF) re used to mitigte curret hrmoics s it is coected i shut ith the lod d provided lo impedce pth t resoce coditio (X l = X c ). High pss filters (HPF) re used to mitigte voltge hrmoics s it is coected i series ith the lod d provides high impedce pth t resoce coditio. Pssive filters compeste rective poer y elimitig hrmoics d lso it improves the poer fctor. The dvtges of pssive filters re lo cost, simple desig d esy to implemet, high reliility. The drcks of pssive filters re depedece of filterig chrcteristics o source impedce, detuig, prllel/series resoce etee poer system compoets, high o lod losses, ulky size d fixed compestio. It cot solve rdom vritios i the lod curret veform []. Hoever, Pssive filters re est suitle for the costt lods s it elimites or ypsses fixed hrmoics (3 rd, 5th, 7th etc) of curret or voltge y tuig the pssive filters t resoce frequecy. Usully, there re multiple frequecy hrmoics i poer system, so group of prllel tued filters re eeded to filter hrmoics [3]. The doule tued filters gives etter performce th the to prllel sigle tued pssive filters. * Asst. Professor, E.E.E. SVEC Tirupthi, Idi, Emil: Kumrreddy98@gmil.com ** Professor & Pricipl, E.E.E RITS Chevell, Idi, Emil: dr.sliscc@gmil.com *** Professor, E.E.E JNTUH College of Egg, JNTUH Hyderd, Idi, Emil: mugl@yhoo.co.i

2 396 Kumr Reddy Cheepti, Srdr Ali d Sury Klvthi M. Usully the loer order hrmoics re more dgerous th the higher order hrmoics s mplitude of loer order hrmoics is more th the higher order hrmoics. The shut pssive filters re clssified s sigle tued, doule tued, triple tued, qudruple tued, dmped, utomticlly tued etc. I this proposed pper the modelig of doule tued filter s doe ith prmeters of to seprte prllel coected sigle tue shut pssive filters [3]. I this proposed pper the modelig of sigle tued d doule tued filters s doe d compred the performce ith the MATAB SIMUINK softre. The doule tued shut pssive filter gives the est solutio s compred to to seprte prllel coected sigle tued pssive filters s evidet form the MATAB Simulik. Whe the three phse system is lced, the there is o flo of triple hrmoics through eutrl of the system to the groud otherise, there is flo of triple hrmoics to the groud vi eutrl. Whe filter is coected to oly oe phse of three phse system, the lced system ecomes ulced d there is flo of triple hrmoics to the groud vi filter. I this Proposed reserch pper Chpter I discusses the itroductio, Chpter II discusses the modelig of sigle tued pssive filter, Chpter III discusses the modelig of doule tued pssive filter, Chpter IV discusses the results d compriso of to filters descried i chpter II & III, chpter V discusses the coclusio.. MODEING OF SINGE TUNED SHUNT PASSIVE FITER Sigle tued shut pssive filters mily cosists of series coected resistce, iductce d cpcitce hich is i prllel ith the olier lod s sho i Fig.. It c e tued to loer order hrmoics (3 rd, 5 th, 7th etc.) t resoce coditio. For higher order hrmoics this type of filters re ot useful s tuig ecomes difficult for higher order hrmoics. At resoce coditio, the iductive rectce ill e equl to the cpcitive rectce (X = X C ), so the totl impedce is less d provides lo impedce pth to tht prticulr resoce frequecy (f ) thus y elimitig the hrmoics due to olier lods. It lso improves the poer fctor. Whe the frequecy is less th the resoce frequecy the circuit is cpcitive i ture, d if it is more th resoce frequecy the circuit is iductive i ture. Cosider system s sho i Fig. The impedce versus frequecy curve is give y Desig Procedure: The iductive rectce X is give y Where f is the th hrmoic frequecy The cpcitive rectce X C is give y X f () X C f C () Figure : Sigle Tued Pssive Filter Figure : Chrcteristics of sigle tued filter

3 Performce Alysis of Doule Tued Pssive Filter for Poer Qulity 397 At resoce X X (3) C The resot frequecy f is The desired vlue of cpcitce for tuig The desired vlue of iductce for tuig The desired vlue of resistce for tuig The qulity fctor is f C R f f C C ( f ) C ( f ) ( f) Q (4) (5) (6) (7) (8) The qulity fctor lies 5 to 00. It gives the shrpess of filterig. C Q R (9) III. MODEING OF DOUBE TUNED SHUNT PASSIVE FITERS Doule tued filter is comitio of series d prllel coectio of pssive elemets. It c filter to loer order (3 rd,5 th, 7 th etc) hrmoics ith sigle circuit heres for sigle tued, it requires to seprte prllel circuits. The series circuit gives oe resot frequecy (W S ) d prllel circuit gives other resot frequecy (W P ). These to resoce frequecies c filter to hrmoics from the poer system ith sigle circuit. Doule tued filters gives etter performce he compred to the sigle tued filters. I this proposed project usig prmeters of sigle tued filter, the doule tued filter s desiged [3]. The impedce versus frequecy curve is give y Desig Procedure: The series circuit impedce is The prllel circuit impedce is The totl impedce is Z p Zs j jc ( jc ) j (0) ()

4 398 Kumr Reddy Cheepti, Srdr Ali d Sury Klvthi M. Figure 3: Doule tued pssive filter Figure 4: Prllel Sigle Tued Filter Figure 5: Chrcteristics of doule tued filter Z j jc jc j () z s p JC p C (3) The series resoce frequecy (Ws), prllel resoce frequecy (Wp) i rdis c e expressed s s ; p C C W d W re the resot frequecies of to sigle tued frequecies C ; C The impedce of to prllel sigle tued filters c e expressed s (4) (5) Z jc jc (6) The totl impedce of doule tued filter is sme s totl impedce of to sigle tued pssive filters Comprig coefficiet of W 4 Comprig coefficiet of W Comprig coefficiet of W 3 The prmeter is give y Z Z (7) s p (8) C C C (9) C C C (0) p

5 Performce Alysis of Doule Tued Pssive Filter for Poer Qulity 399 C C The series resoce frequecy d prllel resoce frequecy c e otied y s p C Sice is the zero of doule tued filter impedce, so Z ( ) = 0. The equtio to solve is C 0 s p s () () (3) (4) The ove equtio c e simplified to get The vlue of C c e otied y s p C C p Hece ll the prmeters eeded for doule tued filter c e clculted from the prmeters of to prllel coected sigle tued filters. (5) (6) 4. RESUTS AND DISCUSSIONS Figure 6: Sigle Tued Pssive Filter ith R lod Figure 7: Source curret (I s ) ithout filter Figure 8: THD of Sourcecurret (I s ) ithout filter Figure 9: Source curret (I s ) ith filter

6 3300 Kumr Reddy Cheepti, Srdr Ali d Sury Klvthi M. Figure 0: THD of Source curret (Is) ith filter Figure : 5th& 7th hrmoic currets Figure : Sigle tued pssive filter ith RE lod Figure 3: Source curret (Is) ithout filter Figure 4: THD of Source curret (Is) ithout filter Figure 5: Source curret (Is) ith filter Figure 6: THD of Source curret (Is) ith filter Figure 7: 5th& 7th hrmoic currets

7 Performce Alysis of Doule Tued Pssive Filter for Poer Qulity 330 Figure 8: Sigle tued pssive filter ith R lod Figure 9: Source curret (I s ) ithout filter Figure 0: THD of Sourcecurret (I s ) ithout filter Figure : Source curret (I s ) ith filter Figure : THD of Source curret (I s ) ith filter Figure 3: 5 th & 7 th hrmoic currets Tle Hrmoics ithout filter Tle Hrmoics ith filter Hrmoics ithout filter Hrmoics ith Sigle tued shut pssive filter Three phse system coected to ridge rectifier ith R- lod Three phse system coected to ridge rectifier ith R--E lod Three phse system coected to ridge rectifier ith R lod Three phse system coected to ridge rectifier ith R- lod Three phse system coected to ridge rectifier ith R--E lod Three phse system coected to ridge rectifier ith R lod

8 330 Kumr Reddy Cheepti, Srdr Ali d Sury Klvthi M. 4.. System ith sigle tued shut pssive filer Figure 4: Doule tued pssive filter ith R lod Figure 5: Source curret (Is) ithout filter Figure 6: THD of Sourcecurret (Is) ithout filter Figure 7: Source curret (Is) ith filter Figure 8: THD of Source curret (Is) ith filter. Figure 9: 5th& 7th hrmoic currets Figure 30: Doule tued pssive filter ith RE lod Figure 3: Source curret (Is) ithout filter

9 Performce Alysis of Doule Tued Pssive Filter for Poer Qulity Figure 3: THD of Sourcecurret (Is) ithout filter Figure 33: Source curret (Is) ith filter Figure 34: THD of Source curret (Is) ith filter Figure 35: 5th& 7th hrmoic currets Figure 36: Doule tued pssive filter ith R lod Figure 37: Source curret (Is) ithout filter Figure 38: THD of Source curret (Is) ithout filter Figure 39: Source curret (Is) ith filter 3303

10 3304 Kumr Reddy Cheepti, Srdr Ali d Sury Klvthi M. Figure 40: THD of Source curret (I s ) ith filter Tle 3 Hrmoics ithout filter Figure 4: 5 th & 7 th hrmoic currets Tle 4 Hrmoics ith filter Hrmoics ithout filter Hrmoics ith doule tued shut pssive filter Three phse system coected to ridge rectifier ith R- lod Three phse system coected to ridge rectifier ith R--E lod Three phse system coected to ridge rectifier ith R lod Three phse system coected to ridge rectifier ith R- lod Three phse system coected to ridge rectifier ith R--E lod Three phse system coected to ridge rectifier ith R lod 4.. System ith doule tued shut pssive filer 4.3. Cosiderig filter oly to phse Whe three phse system is lced, the there is o flo of tiple hrmoics to the eutrl ire to groud. triple hrmoics re 3 rd multiplictio of hrmoics (3 rd, 9 th, 5 th etc.) ut, mostly there is flo of 3 rd hrmoic compoets to the eutrl of the groud. To void the triple hrmoics, oth the supply d the lod should e grouded, so tht triple hrmoics ccels ech other y tkig reverse pth from the supply d lod grouds. I this pper ridge rectifier ith R, R, RE lods re coected cross it coected to three phse supply s used to geerte hrmoics, It s oserved tht there is o triple hrmoics i the system ut there is presece of other hrmoics i.e system is lced. Whe sigle tued or doule tued filter is coected oly to oe of the phse, the there is cosiderle flo of Tle 5 Hrmoics of doule tued filter he coected to oly phse Tle 6 Hrmoics of sigle tued filter he coected to oly phse Hrmoics ith doule tued shut pssive filter Hrmoics ith sigle tued shut pssive filter Three phse system coected to ridge rectifier ith R- lod Three phse system coected to ridge rectifier ith R--E lod Three phse system coected to ridge rectifier ith R lod Three phse system coected to ridge rectifier ith R- lod Three phse system coected to ridge rectifier ith R--E lod Three phse system coected to ridge rectifier ith R lod

11 Performce Alysis of Doule Tued Pssive Filter for Poer Qulity 3305 triple hrmoics to groud. Triple hrmoics cuses eutrl ire hetig, so poer loss. For 3 phse system filters should coect to ll the phses to void the flo of triple hrmoics to eutrl ire d to get lced coditio. 5. CONCUSION From the lysis, the doule tued filter gives etter performce th sigle tued filter. The size of doule tued filter is less; hrmoic elimitio is more s compred to sigle tued filter. It s oserved tht there is flo of triple hrmoics through the groud he filter is coected to oly oe phse out of three phses i.e. system ecomes ulced. Prmeters Vlue 3 Phse voltge (V s ), Source iductce ( s ), 5, C5, 7, C 7 000V,5mH,3.5mH,30µF,6.89mH,30µF for sigle tued. 3 Phse voltge(v s ), Source iductce( s ),, C,, C 000V,5mH,4.56 mh,60µf,5.56e -4 mh,5.5e -4 F for doule tued. REFERENCES [] George. J. Wkileh, Poer System Hrmoics, Germy, Spriger-Verlg, 00. [] Arillg.J. J., Brdley. D. A., Bodger. P.S., Poer System Hrmoics, Joh Wiley d Sos, Ne York, 985. [3] HE Yi-hog, SU Heg A Ne Method of Desigig Doule tued Filter Proceedigs of the d itertiol coferece o computer sciece d electroics egieerig (ICCSEE 03). [4] Wg Zho, Yg Ju, etc. Hrmoic Suppressio d Rective Poer Compestio[M]. Beijig: CHINA MACHINE PRESS, 00. [5] XIAO Yo, SHANG Chu, etc. Multi-tued Pssive Filters ith ess Poer oss[j]. Automtio of Electric Poer Systems, 006, 9(30): [6] Kg Mig-ci, Zhou Ji-hu. Compestes the doule tued filter elemet prmeter chge sed o cotrollle rector[c]// Electricity Distriutio, 008. CICED 008, 008. [7] Yu Mig to, Che Jiye, Wg Wei, Wg Zji. A doule tued filter sed o cotrollle rector[c]// Poer Electroics, Electricl Drives, Automtio d Motio, 006. SPEEDAM, 006: [8] Xio Yo. Algorithm for the Prmeters of Doule tued Filter [J]. USA: IEEE, 998, : [9] I Pu-mig, XU Zheg, etc.algorithm for the Prmeters of AC Filters i HVDC Trsmissio System[J]. Proc. CESS, 008, 6(8):5-0. [0] Kg Mig-ci, Zhiqi Bo, Xipig Zho. The Prmeters Clcultio d Simultio Reserch out To Types Structure of Doule-tued Filter[C]// Uiversities Poer Egieerig Coferece(UPEC), th Itertiol. 00: -4.

Power Quality Analysis of Harmonics in3.5kva Single Phase Generator using Electronic Filter in Matlab/Simulink Environment.

Power Quality Analysis of Harmonics in3.5kva Single Phase Generator using Electronic Filter in Matlab/Simulink Environment. Dr. Eyeubo Ogheekpobo Joth It. Jourl o Egieerig Reserch d Applictio ISSN : 48-96, ol. 8, Issue3, ( Prt -) mrch08, pp.09-4 www.ijer.com RESEARCH ARTICLE Power Qulity Alysis o Hrmoics i3.5ka Sigle Phse Geertor