INVESTIGATION OF TWO PHASE BRIDGELESS INTERLEAVED BOOST CONVERTER FOR POWER FACTOR CORRECTION

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1 Interntionl Journl of ecent Advnces in Enineerin & Technoloy (IJAET) INVETIGATION OF TWO PHAE BIGELE INTELEAVE BOOT CONVETE FO POWE FACTO COECTION 1 V.Nithin, 2 P.iv Priy, 3 N.iv unth, 4 r..eyezhi & 5 K.Vineshwr, eprtent of EEE, N Collee of Enineerin, Chenni. Eil : 1 voi.nithin@il.co, 2 sivpriy.pitchu@il.co, 3 sunthnineni@il.co, 4 seyezhir@ssn.edu.in & 5 vineshwrlizhn@il.co Abstrct - Hybrid Electric Vehicles (HEV) usully need power conditionin, typiclly rectifiction which uses non liner devices, tht produces non-sinusoidl line current due to their non- liner input chrcteristics. The reduction of line current hronics for enhncin the efficiency is Power Fctor Correction. For ctive power fctor topoloies, there exist brided nd brideless power converter circuits. This pper focuses on brideless Interleved Boost Converter (IBC) for shpin the line current wvefor. Moreover, this pper discusses bout vrious boost converter topoloies which re desined nd siulted usin MATLAB - IMULINK for ctive power fctor correction. Perfornce preters such s the Totl Hronic istortion (TH) in the line current, input power fctor nd displceent fctor re investited for ll the topoloies. On coprison, this pper insists on the fct tht Brideless Interleved Boost Converter hs hiher input power fctor nd lower hronics in the line current which is verified throuh siultion. Index Ters AC C Boost Converters, Brideless Interleved Boost Converter, HEV, Power Fctor Correction. uneconoicl. Therefore ctive power fctor correction is ipleented usin power electronic devices to iprove the efficiency of the PFC ste by lowerin the conduction nd switchin losses. The ctive power fctor correction is further clssified into hih frequency ctive PFC nd low frequency ctive PFC. Aon these PFCs better power fctor is obtined by usin hih frequency ctive PFC circuit[1][2]. A Brideless Inter leved Boost Power fctor correction circuit is desined nd siulted usin MATLAB IMULINK. The results obtined re copred with the siultion results of the other topoloies tht re reported in the literture[3]. II. OPEATION OF TWO PHAE BIGELE INTELEAVE BOOT CONVETE FO POWE FACTO COECTION I. INTOUCTION The supply current in Hybrid Electric Vehicles (HEV) hs hih ount of hronics which re due to power conditionin circuits nd other non-liner lods. They hve ny dverse effects in the syste. They need to be rectified nd reduced to intin unity power fctor which otherwise leds to power losses. As result there is need for reduction in line current hronics or Power Fctor Correction-PFC. Power fctor correction cn be done in two wys (i) Pssive Power fctor Correction (ii) Active Power Fctor Correction. Pssive devices lie cpcitor bns re used in Pssive power fctor correction. By usin pssive power fctor correction the vehicle becoes bulier nd lso becoes Fi.1 Circuit ir of Two Phse Brideless Interleved Boost Power Fctor Conversion Circuit 155 IN (online) Volue-1, Issue-3, 2013

2 Interntionl Journl of ecent Advnces in Enineerin & Technoloy (IJAET) To nlyze the circuit opertion, it hs been seprted into two hlf cycles. urin the positive hlf cycle, when AC input volte oes positive, Q1 turns on nd current flows throuh L1, Q1 nd continues throuh Q2 nd then L2 to store enery in L1 nd L2. When Q1 turns off, enery stored in L1 nd L2 will be relesed s current flows throuh 1, throuh the Lod nd returns throuh the body diode of Q2 bc to the ins.[4]. The se cycle hppens for Q3, but with 180 phse dely. urin the netive hlf cycle, Q2 nd Q4 turn on, current flows throuh the inductors L2 nd L1 (L4 nd L3 for the interleved one). When the MOFETs re off, enery is relesed s current flows throuh 2 (nd 4), throuh lod nd bc to the in throuh the body diode of Q1 (nd Q3)[5]-[8]. EIGN EQUATION: The duty rtio () of typicl boost converter is iven by[9]: = V out V in V out (1) V out - Output Volte, V in - Input Volte. The inductor shown in Fi.1 cn be desined usin the expression: L = V in x I ripple x f (2) Fi.2 Conventionl Boost Power Fctor Correction Circuit The Conventionl Boost Power Fctor Correction Circuit [10] is shown in Fi.2 esin pecifictions: Tble I iultion Preters Of Conventionl Boost Power Fctor Correction Circuit Input volte upply frequency L µh C witchin frequency Anlysis: 850 ΩF 25 Hz 1) The ount of Totl Hronic istortion in upply current ws observed to be 93.83%. 2) Power Fctor of this topoloy with the entioned desin specifictions ws found out to be B. Brideless Boost Power Fctor Correction Circuit: Where L Inductnce, f - switchin frequency nd I ripple - inductor current ripple. The vlue of cpcitnce (C) [9] is iven by the expression: C = V out x f x ΔV x (3) Where ΔV - Output volte ripple III. ANALYI OF TOPOLOGIE FO POWE FACTO COECTION A. Conventionl Boost Power Fctor Correction Circuit: Fi.3 Brideless Boost Power Fctor Correction Circuit The Brideless Boost Power Fctor Correction Circuit [10] is shown in Fi.3. esin pecifictions: TABLE II. iultion Preters of Brideless Boost Power Fctor Correction Circuit Input volte upply frequency L µh C 850 µh witchin frequency 25 Hz 156 IN (online) Volue-1, Issue-3, 2013

3 Interntionl Journl of ecent Advnces in Enineerin & Technoloy (IJAET) Anlysis: 1) The ount of Totl Hronic istortion in upply current ws observed to be 82.02%. 2) Power Fctor of this topoloy with the entioned desin specifictions ws found out to be C. Interleved Boost Power Fctor Correction Circuit:. Brideless Interleved Boost Power Fctor Correction Circuit: L1 L2 L3 C L4 Fi.4 Interleved Boost Power Fctor Correction Circuit The Interleved Boost Power Fctor Correction Circuit [10] is shown in Fi.4. esin pecifictions: Tble III: iultion Preters for Interleved Boost Power Fctor Correction Circuit Input upply upply frequency 1,2 25illi ohs L1,L2 667 µh Fi.5 Brideless Interleved Boost Power Fctor Correction Circuit The Brideless Interleved Boost PFC Circuit[10] is shown in Fi.5. esin pecifictions: Tble IV - iultion Preters Of Brideless Interleved Boost Power Fctor Correction Circuit Input upply upply frequency L1,L2,L3,L4 667 µh C 850 µf witchin Frequency 25 Hz Anlysis: 1) The ount of Totl Hronic istortion in upply current ws observed to be 43.60%. 2) Power Fctor of this topoloy with the entioned desin specifictions ws found out to be C 850 µf witchin Frequency 25 KHz Anlysis: 1) The ount of Totl Hronic istortion in upply current ws observed to be 72.65%. 2) Power Fctor of this topoloy with the entioned desin specifictions ws found out to be IN (online) Volue-1, Issue-3, 2013

4 Interntionl Journl of ecent Advnces in Enineerin & Technoloy (IJAET) Fi.6 Coprison of Power Fctors of Vrious Boost Converter Topoloies Fi.8 upply Current nd upply Volte wvefors for Conventionl Boost Power Fctor conversion circuit Fi.7 Coprison of TH contents of Vrious Boost Converter Topoloies Fro the bove nlysis, it is observed tht the brideless Interleved Boost Converter ives hiher power fctor with reduced TH when copred with the conventionl nd Brideless PFC s. The results re shown in Tble: V. Tble V Coprison of Perfornce Preters of Vrious Power Fctor Conversion Circuits TYPE L(H) TH PF Conventionl Bride PFC Conventionl Bride PFC µH 94% µH 69.04% 0.79 Brideless PFC µH 82.02% 0.76 Brideless PFC 667µH 63.53% Bride Interleved PFC Brideless Interleved PFC 667µH 72.65% µH 43.60% IV. IMULATION EULT In prcticl pplictions of ctive power fctor correction, the input AC volte is first rectified nd then boosted usin converter circuit. Brided nd Brideless types of converters re siulted usin MATLAB IMULINK nd the supply current nd supply voltes re s follows: Fi.9 upply Current nd upply Volte wvefors for Brideless Boost Power Fctor Conversion circuit Fi.10 upply Current nd upply Volte Wvefors for Interleved Boost Power Fctor Conversion circuit 158 IN (online) Volue-1, Issue-3, 2013

5 Interntionl Journl of ecent Advnces in Enineerin & Technoloy (IJAET) Fi.11 upply Current nd upply Volte Wvefors for Brideless Interleved Boost Power Fctor Converter V. CONCLUION A brideless Interleved Boost Converter is desined nd siulted in this pper. A coprtive study of the Conventionl boost, Brideless Boost, Interleved boost nd Brideless Interleved Boost topoloies for ctive power fctor Correction in AC-C converters hs been crried out in this pper. Fro the results, it is found tht the Brideless Interleved Boost Converter topoloy for ctive power fctor correction is proisin topoloy s it ffords iproved Totl Hronic istortion nd power fctor closer to unity. VI. EFEENCE [1] Ghner, Active Power Fctor Correction usin switched eultors, inhd Acdey of Enineerin, Kondhw (B), Pune-41104, Indi. [2]. Mrsh, Active Power Fctor Correction, EN Mzine, Jn. 2000, pp [3] Kur i Mlli, Topoloicl Issues In inle Phse Power Fctor Correction, eprtent of Electricl Enineerin Ntionl institute of Technoloy, ourel, 2007 [4] Chndrsern,,. Interted netics for interleved C-C boost converter for fuel cell powered vehicles ocwell ci.,thousnd Os, CA, UA. [5] P.Lee, Y.Lee,.K.W. Chen nd X.Liu, tedy-stte nlysis of n interleved boost converter with coupled inductors, IEEE Trns. Industril Electronics, pp ,2000 [6] B. M Hsneen, esin nd iultion of C/C Boost Converter by, Fculty of En., Al-Azhr University, Ken, Eypt nd Adel A.Elbset Mohed, Fculty of Enineerin, Mini University, Mini, Eypt eceber [7] Kornetzy, Peter, A sinle-witch AC/C Converter with Power Fctor Correction, et el Electronics Letters. Vol. 33, no. 25: pp ,(ec. 1997) [8] Bloh.L nd edl., Power-fctor correction with interleved boost Converters in continuous-inductor-current ode Asco Enery yst.,bern, Applied Power Electronics Conference nd Exposition,1993. [9]. eyezhi nd B.L. Mthur, esin nd ipleenttion of fuel cell bsed Interleved Boost Converter, At the Interntionl Conference on enewble Enery, University of jsthn, Jipur, ICE 2011 Jn 17-21, [10] Wilson Eberle nd Wili G. unford, Efficiency Evlution of inle-phse olutions for AC-C PFC Boost Converters for Plu-in-Hybrid Electric Vehicle Bttery Chrers eprtent of Electricl nd Coputer Enineerin University of British Colubi. 159 IN (online) Volue-1, Issue-3, 2013