Design and Development of Single Switch High Step-Up DC-DC Converter

Transcription

1 > JETPE < 1 esign and evelopmen of gle wich High epup onverer aravanan, and N amesh Babu, Member, IEEE Absrac In his paper, a new sgle swich high sepup dcdc converer wih high volage ga is proposed. The proposed opology is developed by combg boos and EPI converer wih diode capacior circui o reduce he sress across he semiconducor devices. The proposed converer produces low swichg volage and hence i improves is efficiency. The operag prciple and he seady sae performance analysis are discussed. The performance of he converer is validaed by developg a prooype circui wih pu volage of 30, oupu volage of 300 and oupu power rag of 50 W. The heoreical analysis and experimenal resuls concludes he proposed converer is suiable for high volage applicaions. Index Terms power conversion, high volage ga, low volage sress, sgle swich T I. INTOUTION HI non isolaed dcdc converer wih high saic ga has gaed focus research as here is a requiremen of his echnology for many applicaions which generaes low dc volage sources. The non convenional energy resources like Phoovolaic (P) modules, small wd urbes and fuel cells [1],[] generaes low dc volage and needs o be sepped up. Normally, low volages are rangg from 1 o 15 and i mus be boosed up o ac grid requiremen volage [3]. enewable energy based disribued generaion of power producion go remendous developmen as a mos essenial power producg secor due o is clean and environmen friendly naure. And hese power producion resuls low volage profiles where here is a need for differen converer opologies. High sepup converer design needs some key requiremens such as high power densiy, reduced swichg volage sress, low weigh, and low cos. Manuscrip received March 3, 017; revised June 6, 017 and July 6, 017; acceped Augus, 017. ae of publicaion January 19, 017; dae of curren version July 31, 017. This work was suppored by chool of Elecrical Engeerg, IT Universiy, ellore, India. ecommended for publicaion by Edior ragan Maksimovic.. aravanan, and N.. Babu, are wih he chool of Elecrical Engeerg (ELET), IT Universiy, ellore63014, India. ( saravanansjncf@gmail.com; nrameshbabu@vi.ac.). igial Objec Idenifier P Module 30dc P 1 L 3 \ 0 0 ou 300dc Fig. 1. Grid egraed P based power generaion sysem. A A Grid In ransformer based converers high volage conversion can be achieved by adjusg he urn s raio which creaes large leakage ducor problem. Also, i uilizes high frequency which impacs on high swichg volage sress, crease of range weigh, volume and size, as well as he efficiency ges reduced [4]. The nonisolaed high sepup converers generae he high volage ga wih reduced swichg frequency for boosg up he volage. onvenional boos converer is used general, for seppg up he volage for he nonisolaed dcdc converer family. Normally, i needs high duy cycle o generae he high oupu volage [5]. The swichg volage sress is equal o he oupu volage boos converer and roduces large ducor curren ripple. Hence i creaes he large conducion loss and reverse recovery issues which affecs he conversion efficiency and high volage ga. To achieve high sepup volage ga and o improve conversion efficiency, many sepup dcdc converers are proposed [6][17]. The sepup converer is upgraded by usg swiched capacior and coupled ducor [6], volage doubler [7], diodecapacior [8] and volage lif [9] echniques. ome researchers proposed opologies ha combes converers like classical boos converer wih gle Ended Primary Inducor onverer (EPI) [10][1], egrae double boos wih EPI [13], egrae boos wih flyback converer [14], [15], and erleaved boos converers [16], [17]. In [18], coupled ducor based converer is used o achieve he high volage ga, where he ma swich is affeced by leakage ducance and degrades he conversion effeciveness. To recify he above issue, he acive clamp circui based coupled ducor opology has been proposed [19]. The swiched capaciors are used converers o achieve high saic ga [0], bu his will crease he cos of converer. onverers usg volage muliplier cell echniques have reduced he volage sress wih crease high volage ga. The overall sysem size and cos are creased wih several muliplier cell sages [1]. The converer opologies proposed [14][18], roduces he effec of Elecro Magneic Inerference (EMI) because of high pu curren ripple (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

2 i Fig.. Proposed non isolaed high sepup converer. 1 L To overcome he disadvanages lised he previous discussions, a nonisolaed dcdc converer wih sgle swich is proposed his paper. The proposed converer roduces a diodecapacior circui series and also uses low volage rag of MOFET, low resisance ( ON ) due o which he volage sress across MOFET and diodes ges reduced. This creases he conversion efficiency of he proposed model. The proposed converer is mos suiable for he phoovolaic based power generaion egraed wih grid sysems usg verer or ac module as shown Fig. 1. The rags of P sysem wih maximum oupu power (P MPP = 50 W) and maximum oupu volage ( MPP = 30 ) has been considered for his sudy. The furher discussion of his paper is organized as follows: ecion II presens he operaional prciples of he proposed converer. The performance analysis of he circui is given ecion III. The design procedure of converer parameers is discussed ecion I. The experimenal resuls of 50 W prooype a full load condiion are shown ecion. ecion I, shows he conclusion of his sudy. 3 O ou II. OPEATIONAL PINIPLE OF POPOE NETE The circui opology of proposed converer is shown Fig.. I consiss of dc volage source, ma swich, hree diodes 1,, and 3, hree capaciors 1,, and 3, wo ducors L 1 and L, oupu diode O, and capacior oupu O. To crease he saic volage ga, diodecapacior based EPI converer is proposed wih he combaion of boos converer. The diodecapacior elemens reduce sress on he swich. The capacior is charged wih he oupu volage of convenional boos converer. The volage from capacior is applied o he ducor L durg conducion period of power swich which creases he volage saic ga, when compare o convenional EPI. In order o simplify he circui analysis, followg assumpions were considered; 1) emiconducor swich and diodes are ideal; ) wichg frequency is consan; 3) All capaciors are designed for less volage ripple a he swichg frequency; A. onuous onducion Mode Operaion The conuous conducion mode (M) operaion is discussed for he proposed converer wih is operag modes as shown Fig. 3. 1) Mode I [ 0 1 ]: In his mode, he swich and diode 3 is urned ON and diodes 1,, and O are reverse biased condiion as Fig. 3(a). The energy is beg sored boh ducors L 1 and L. The generaion of chargg curren from he pu volage, makes capacior 1 o charge he capacior 3 hrough diode 3 curren (i i L ). The oupu load ges energy from he discharge of oupu capacior O. This operaion ends, when diode 3 curren becomes zero a = 1. ) Mode II [ 1 ]: In his mode, he swich is urned ON and diodes 1,, 3, and O are reverse biased as shown Fig. 3(b). The curren from pu supply is used o charge he ducor L 1. As O is reverse biased, he oupu load ges curren flow due o capacior curren i 0. This mode ends, when he diode sars conducg mode a =. 3) Mode III [ 3 ]: In his mode, he swich and diode is urned ON and diodes 1, 3, and O are reverse biased condiion as shown Fig. 3(c). The charge is sored boh ducors L 1 and L. The capacior 1 is beg charged by i of capacior 3 hrough diode. The oupu capacior O sars dischargg and provides he energy o load. This mode of operaion ermaes, when he ma swich is urned OFF and diode curren become zero a = 3. 4) Mode I [ 3 4 ]: In his mode, he swich and diode is urned OFF and diodes 1, 3, and O are forward bias condiion as shown Fig. 3(d). This mode sars dischargg he energy from boh he ducors L 1 and L wih reverse polariy. Thecapacior is geg charged by he curren (i i i L ) which flows from he ducor L 1 and capacior 1.The oupu capacior O and load are geg charged from he capacior 3 hrough diode O. This mode of operaion is ended, when he ma swich is urned ON a he nex period. The ma heoreical waveforms of proposed converer are shown Fig. 4. The swichg volage and volage across all he diodes are less han he oupu volage. The volage power swich and he diodes 1 and O are equal o he capacior volage. The volage diodes and 3 is equal o he capacior 3 volage. The oupu volage is equal o he sum of he capaciors 1 and volage, when he swich is urned off and expressed as: (1) ou B. isconuous onducion Mode Operaion The disconuous conducion mode of he proposed converer is operaed hree modes of operaion, is shown Fig. 5 and described as follows: 1) Mode I [ 0 1 ]: urg his mode, he swich and diode is urned ON and diodes 1, 3, and O are reverse biased condiion as shown Fig. 5(a). The pu curren is sored ducors L 1 and L. The curren hrough he ducor L is less han he L 1, bu he volage applied for boh ducors are equal o pu volage as (). The oupu capacior O discharges and ransforms he energy o load. This mode of operaion ends, when he ma swich is urned OFF and diode curren becomes zero a = 1. () L (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

3 > JETPE < 3 i i 1 L 3 O (a) 1 L 3 O ou ou is used o charge he ducor L 1 and capacior urn he curren i is used o charge he ducor L. The capacior is charged by he curren flowg hrough he diode 1 and he swichg volage is equal o capacior volage. In his mode, d is he conducion ime of diodes durg which he ducors L 1 and L energy is ransferred o 1 and respecively. The oupu capacior O and load are geg charged from he capacior 3 hrough diode O. 3) Mode III [ 3 ]: urg his mode, he swich is urned OFF and diodes 1,, 3, and O are reverse bias condiion as shown Fig. 5(c). The volage across he ducors L 1 and L become zero and curren hrough he ducors remas same as given (3), where he mode acs freewheelg sage. The charge sored capacior O is discharged o load. When swich is urned ON condiion, his mode ends a = 3. i i 0 (3) L L The ma heoreical M waveforms of proposed converer are presened Fig. 6. The average curren ducor L 1 is equal o he pu curren ripple and average curren of he ducor L is same as he oupu curren of he converer. i i 1 1 (b) L (c) L (d) Fig. 3. Operaional modes of he proposed converer durg one swichg period a M operaion. (a) Mode I. (b) Mode II. (c) Mode III. (d) Mode I. ) Mode II [ 3 ]: urg his mode, he swich and diode is urned OFF and diodes 1, 3, and O are forward bias condiion as Fig. 5(b). The curren from pu supply 3 3 O O ou ou III. PEFOMANE ANALYI OF THE POPOE NETE eady sae analysis and heir design equaions of he proposed converer are presened his secion. The saic ga of he proposed converer is obaed by assumg average ducors volage as zero a seady sae condiion. urg M operaion, he followg relaion (4) is formulaed for he ducor L 1. ( )(1 ) (4) where, is he pu volage of proposed converer, is he duy cycle, and is he capacior volage. The capacior and 3 volages are obaed similar o convenional boos converer saic ga as given below, 1 1 (5) 1 (1 ) (6) The relaion considered for he average ducor L volage a seady sae condiion is given (7), ( ou ) ( )(1 ) (7) From equaion (1), (8) ou By subsiug (5), (6) and (8) (7), he volage ga is compued as, ou 3 (9) (1 ) (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

4 > JETPE < 4 i = i is is is 1 i1 1= i1 i3 i0 i 3 i3 0 i0 i = 3= 0= i=i 0 1 on=.t =.[1/(1)] T 3 4 off=(1).t i i i i 0 1 on=.t d=d.t off=(1).t T Fig. 6. Ma heoreical M operaion waveforms of he proposed converer. 3 Fig. 4. Ma heoreical M operaion waveforms of he proposed converer. i i i 3 1 L (a) 3 1 L (b) 3 1 L O O O ou ou ou Equaion (9), is rearranged o fd duy cycle as (10), ou 3 ou (10) The capacior 1 volage is formulaed by subsiug (5) and (9) (8), 1 (11) (1 ) The saic gas of he classical boos, EPI, modified EPI [10], high sep [3] along wih proposed converer are illusraed Fig. 7. From Fig. 7, i is observed ha he volage ga of he proposed converer reaches maximum of 10 wih duy cycle of = Also, i is observed ha he proposed converer ga is higher han oher compared converers a any paricular duy cycle. urg he M operaion, he proposed converer a seady sae condiion wih volage across he boh ducors o be assumed as zero and he capacior volage is equal o sum of he pu volage and capacior 1 volage equaion (1). The operaion mode M of proposed converer is illusraed as follows: (1) The average volage across boh he ducors L 1 and L are equal o null, durg he seady sae operaion of he converer as given (13), d is duy cycle durg d, and d is he conducion period of diodes 1, 3, and O. ( ) (13) d Fig. 5. Operaional modes of he proposed converer durg one swichg period a M operaion. (a) Mode I. (b) Mode II. (c) Mode III. (c) d d (14) (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

5 > JETPE < 5 From he (1), he capacior volage is considered as, (15) ou ubsiug (1) (15), he capacior 1 volage is obaed as follows: ou (16) ubsiug (16) (15), he capacior volage is obaed as follows: ou (17) The saic ga of proposed converer is obaed for M operaion by subsiug (17) (14), ou d (18) d ou d (19) The average curren hrough he diode O is equal o he oupu curren I ou, where, 1 i d o I ou (0) io (1) L f L eq eq 1 L () L L ombg (19), (0) and (1), he oupu volage can be obaed and he volage ga M operaion wih ducor ime consan, τ is, ou 1 (3) The capacior 1 volage is derived by subsiug (16) (18), d (4) The heoreical analysis, modes of operaion and waveforms of proposed converer for boh M and M operaion is presened his paper. The saic ga, capaciors 1 and volages are derived for boh M and M operaions proposed converer. urg boundary conducion mode, he volage ga of M is equal o M. ombg (9) and (3), he normalized boundary ducor ime consan can be calculaed as follows, (1 ) B (5) 1 3 ou / Fig. 7. onverers saic ga waveforms τ B Boos EPI ef. [10] and [3] Proposed M Fig. 8. Boundary condiion of he proposed converer. Fig. 8, plos he relaion beween τ B and. If, τ >τ B he converer operaes M, else i will operae M. Table I shows he comparison of componens used proposed converer wih oher converers. From [], four ypes of converers are chosen for comparison which is designed wih 50 khz swichg frequency. The HL (ymmerical Hybrid wiched Inducor onverers) and boos (wiched capacior boos) has he average sum of pu and oupu volage as swichg volage. The AHL (Asymmerical Hybrid wiched Inducor onverers) has he drawback of high swichg volage. The Lboos (wiched Inducor boos) and [3] has he similar saic ga wih swichg volage equal o he oupu volage of he converer. The proposed converer operaes wih less swichg frequency and reduced swichg volage for high volage ga, when compared wih oher converers. The efficiency of he proposed converer is 9.% which is beer han he oher converer opologies for full load condiion and operaes wih low swichg volage. M (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

6 > JETPE < 6 TABLE I MPAION OF NETE PAAMETE Topology [] Proposed [3] HL AHL Boos LBoos onverer Oupu Power, P 00 W 00 W 00 W 00 W 100 W 50 W Inpu olage, Oupu olage, ou wichg Frequency, F s 50 KHZ 50 KHZ 50 KHZ 50 KHZ 100 KHZ 4 KHZ (No. Of wich, iode, (, 7, 4, 1) (, 4, 3, 1) (1, 3,, 3) (1, 4,, 1) (1, 3, 1, 3) (1, 4,, 4) Inducor, apacior) olage Ga (1 ) (1 ) wichg olage ress ou 1 ou 3 ou ou ou 1 Efficiency, ƞ (Full load condiion ) 91.5% 90.3% 90.1% 89% 90.6% 9. % I. EIGN TEP OF THE POPOE NETE The equaions used o design he proposed nonisolaed dcdc converer operag conuous conducion mode (M), are presened followg specificaions: A. L 1 and L Inducances The value of pu ducance is designed by usg he equaion (6) and (7). (6) i f L L.(1 ) (7) f. i L where, f is he swichg frequency, Δi L is ripple curren is he capacior volage and is he pu volage. B. 1, and 3 apaciors The capaciors 1, and 3 are designed for proposed converer by assumg same volage ripple. Usually, he small capaciance value is obaed wih low series equivalen resisance. The value of capacior is designed by usg he capacior volage ripple Δ he equaion (30). A capacior volage ripple as 10% (0.1) of he nomal volage of he capacior is assumed. The capacior charge variaion ΔQ is given as, where, Iou Q (8) f Q (9) Iou (30) f 3 (0.1) (31) 1. Power wich olage The swichg volage is an imporan parameer of a circui high volage applicaion which creases he converer cos and efficiency. The proposed converer his paper drasically reduces he high swichg volage compared wih convenional boos and EPI converer. The swichg volage of proposed converer is equal o he capacior volage and is given (3). From he analysis, he swichg volage of he proposed converer is less han he oupu volage for all differen pu volage. (3) 1 where, s is he swich volage of he proposed converer.. Oupu capacior O The oupu capacior is represened as he funcion of duy cycle, oupu curren I ou, swichg frequency and oupu volage ripple Δ O. The oupu capacior is calculaed usg (33), by considerg peakpeak oupu volage ripple equal o 1% of he oupu volage, where, O Iou (33) f O ou Iou (34) where, is he load and ou is he oupu volage of proposed converer. The proposed converer can be uilized for various applicaions and i has been designed for 50 W which is more suiable for phoovolaic sysem.. EXPEIMENTAL EULT To express he usefulness of he noional analysis he proposed converer, a prooype circui model is implemened and esed he laboraory as shown Fig. 9. The componens used he prooype model along wih is rags are abulaed Table II (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

7 > JETPE < 7 TABLE II MPONENT AN PAAMETE OF POPOE NETE omponens Parameers Maximum Oupu Power, P 50 W Inpu olage, 30 Oupu olage, ou 300 wichg frequency, f s 4 khz Power MOFET, IXFB110N60P3 iodes, 1,, 3, and O 15EWX06FNM3 Inducance, L 1 and L 05 µh and 180 µh apaciors, 1, and 3.08 µf/50 Oupu apacior, O 140 µf/600 Fig. 9. Experimenal prooype of proposed converer. (a) (c) (b) (d) Fig. 10. Experimenal resuls of proposed converer. (a) I and I L (b) and (c) and ou (d) 1 and (e) 3 and O. (e) (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

8 > JETPE < 8 omponens No. of iems wich, 1 FZ150033HE3BPA1 iodes, { 1,, 3, and O} Inducance, {L 1 and L } apaciors, { 1, and 3} Oupu apacior, { O} TABLE III T ANALYI OF POPOE NETE Parameers (50 kw) U (50 kw) Parameers (50W) U (50 W) $ (cludg gae driver) IXFB110N60P3 $ 1.5(cludg gae driver) T $ x 4 = $ EWX06FNM3 $ 1.43 x 4 = $ mh and µh $ x = $ µh and 180 µh $ 13.3 x = $ µf/ 18 k $ 19.6 x 3 = $ µf/ 50 $ 3.73 x 3 = $ mf/ 5 k $ µf/ 600 $ 33.1 Efficiency(%) Power (W) Fig. 11. Efficiency curve of he proposed converer under various power. All he resuls obaed from he proposed converer are measured usg Mixed ignal Oscilloscope (MO). The swichg pulse required for MOFET is generaed usg dpae 1104 conroller. The resuls aken from he proposed high sepup dcdc converer operaed under M a full load (50 W) is shown Fig. 10. Fig. 10(a) shows he L 1 and L ducor curren waveforms. The pu curren is equal o he average of L 1 curren and he oupu curren is equal o he average of L curren. In Fig. 10(b) capaciors 1 and volage waveforms are shown. From he Fig. 10(b) i is observed ha, he value of capacior is 161 and he 1 volage is around o 14. The sum of capaciors 1 and volages is equal o he oupu volage of he proposed converer. The pu and oupu volage waveforms for he proposed converer clearly shows ha he volage is sepped up en imes han he pu volage given o he converer and hey are shown Fig. 10(c). The pu volage given o he converer is 30 and i provides oupu volage of 97 which is approximaely near o he designed volage level. The swichg volage of power MOFET is verified and found ha proposed converer i is 16. Fig. 10(d) and (e), shows he diodes 1,, 3, and O volage waveforms. The volage waveforms of diodes 1 and O is 163 and 158 which is close o he capacior volage (~161 ) and diodes and 3 is 78 and 8 which is nearly he capacior 3 volage (~78.5). Fig. 11 shows he experimenal resuls of he converer efficiency under various loadg condiions. The proposed converer efficiency is equal o 9. % a he full load power. Table III shows he cos analysis of he proposed converer for wo differen rag like 50 W and 50 kw. I clearly shows ha he proposed converer is more cos effecive when he power rag creased. The proposed converer for 50 W power rag is designed and esed laboraory seup and validaed he resuls. I. NLUION A new sgle swich high saic ga nonisolaed dcdc converer is presened his paper. The proposed converer opology is suiable for renewable energy based applicaions havg low pu dc volage. The proposed converer provides high volage conversion wihou usg ransformer and coupled ducor. The semiconducor power devices used his opology havg reduced volage sress wih low ONresisance swich. The seady sae analysis based M and M operaions are performed wih saic ga and presened his paper. The experimenal prooype of he proposed converer is implemened and verified is operaion laboraory. The prooype resuls ensure high efficiency and high volage ga wih low conducion loss can be achieved. The efficiency of proposed converer achieves 9.% operag wih pu volage equal o 30 and oupu volage around 300. EFEENE [1] F. Blaabjerg, and K. Ma, Fuure on power elecronics for wd urbe sysems, IEEE J. Emerg. and el. Topics Power Elecron., vol. 1, no. 3, pp , ep [] A. Ajami, H. Ardi, and A. Farakhor, A novel high sepup / converer based on egrag coupled ducor and swichedcapacior echniques for renewable energy applicaions, IEEE Trans. Power Elecron., vol. 30, no. 8, pp , Aug [3] G.. ilveria, F. L. Tofoli, L... Bezerra, and. P. TorricoBascopé, A Nonisolaed boos converer wih high volage ga and balanced oupu volage, IEEE Trans. Ind. Elecron., vol. 61, no. 1, pp , ec [4] W. Li and X. He, eview of non isolaed highsepup dc/dc converers phoovolaic gridconneced applicaions, IEEE Trans. Ind. Elecron., vol. 58, no. 4, pp , Apr [5] L.. Yang, T. J. Liang, and J. F. hen, Transformerless converer wih high volage ga, IEEE Trans. Ind. Elecron., vol. 56, no. 8, pp , Aug [6] A. Ajami, H. Ardi, and A. Farakhor, A novel high sepup / converer based on egrag coupled ducor and swichedcapacior echniques for renewable energy applicaions, IEEE Trans. Power Elecron., vol. 30, no. 8, pp , Aug [7] L.. Yang, T. J Liang, H.. Lee, and J. F. hen, Novel high sepup converer wih coupled ducor and volagedoubler circuis, IEEE Trans. Ind. Elecron., vol. 58, no. 9, pp , ep (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.

9 > JETPE < 9 [8] X. Hu, and. Gong, A high volage ga converer egrag coupledducor and diodecapacior echniques, IEEE Trans. Power Elecron., vol. 9, no., pp , Feb [9]. K. hangchien, T. J. Liang, J. F. hen, and L.. Yang, epup converer by coupled ducor and volagelif echnique, IET Power Elecron., vol. 3, no. 3, pp , May 010. [10]. Gules, W. M. anos, F. A. eis, E. F.. omaneli, and A. A Bad, A modified EPI converer wih high saic ga for renewable applicaions, IEEE Trans. Power Elecron., vol. 9, no. 11, pp , Nov [11]. G. Bianch,. Gulus, A. A. Bad, and E. F.. omaneli, Highpowerfacor recifier usg he modified EPI converer operag disconuous conducion mode, IEEE Trans. Power Elecron., vol. 30, no. 8, pp , Aug [1]. aravanan, N.. Babu, BFN based MPPT algorihm for P sysem wih high sep up converer, Energy onvers., and Manag., vol. 1, pp Aug [13] A. J. abzali, E. H. Ismail, and H. M. Behbehani, High volage sepup egraed double boosepi converer for fuelcell and phoovolaic applicaions, enew. Energy., vol. 8, pp Oc [14] T. J. Liang, and K.. Tseng, Analysis of egraed boosflyback sepup converer, Proc. IEE. Elec. Power Appl., vol. 15, no., pp. 17 5, Mar [15] Z. hen, Q. Zhou, and J. Xu, oupledducor boos egraed flyback converer wih higvolage ga and ripplefree pu curren, IET Power Elecron., vol. 8, no., pp. 130, Feb [16] T. Nouri,. H. Hossei, E. Babaei, and J. Ebrahimi, Inerleaved high sepup converer based on hreewdg highfrequency coupled ducor and volage muliplier cell, IET Power Elecron., vol. 8, no., pp , Feb [17] M. Muhammad, M. Armsrong, and M.A. Elgendy, A Nonisolaed Inerleaved Boos onverer for Higholage ga applicaions, IEEE J. Emerg. And eleced Topics Power Elecron., vol. 04, no., pp. 3536, Jun [18].J. Wai and. Y. uan, Highefficiency dc/dc converer wih high volage ga, Proc. Ins. Eng.Elec.Power.Appl., vol. 15. No.4, pp , Jul [19] T. F. Wu, Y.. Lai, J.. Hung, and Y. M. hen, Boos converer wih coupled ducors and buckboos ype of acive clamp, IEEE Trans. Ind. Elecron., vol. 55, no. 1, pp , Jan [0]. Giral, L. M. alamero,. Leyva, and, J. Maixe, lidgmode conrol of erleaved boos converers, IEEE ircuis ys., vol. 47, no. 9, pp , ep [1] F. H..upon,. ech,. Gulus, and J.. Pherio, educedorder model and conrol approach for he boos converer wih a volage muliplier cell, IEEE Trans. Power Elecron., vol. 8, no. 7, pp , Jul [] Y. Tang,. Fu, T. Wang, and Z. Xu, Hybrid swichedducor converers for high sepup conversion, IEEE Trans. Ind. Elecron., vol. 6, no. 3, pp , Mar [3] G. Wu, X. uan, and Z.Ye, Nonisolaed high sepup converers adopg swichedcapacior cell, IEEE Trans. Ind. Elecron., vol. 6, no. 1, pp , Jan aravanan received he B.E. degree Elecrical and Elecronics Engeerg 01 from Karpagam ollege of Engeerg, oimbaore, India. and M.E. degree Power Elecronics and rives 014 respecively from ri Krishna ollege of Engeerg and Technology, oimbaore, India. He is currenly workg owards his Ph.. degree a IT Universiy, ellore, India. His areas of eres clude Power Elecronics and is Applicaions renewable energy sysems. N amesh Babu received his B.E. degree Elecrical and Elecronics Engeerg Bharahiar Universiy, India, and received his M.E. degree Applied Elecronics from Anna Universiy, India. Also, he obaed his Ph.. degree from IT Universiy, India. urrenly, he is a Associae Professor and Head of eparmen of Insrumenaion, chool of Elecrical Engeerg (ELET), IT Universiy, ellore, India. He is currenly servg as an Associae Edior IEEE Access journal. His curren research cludes Wd peed Forecas, Opimal onrol of Wd Energy onversion ysem, olar Energy and of ompug echniques applied o Elecrical Engeerg. He published more han 50 journal aricles and many conference papers (c) 017 IEEE. Personal use is permied, bu republicaion/redisribuion requires IEEE permission. ee hp:// for more formaion.