Analysis and Simulation of Active Clamped Quasi-Resonant DC Link Inverter

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1 Intenatonal Jounal of Soft omputng and Engneeng (IJSE) ISSN: -7 Volume- Iue- Novembe Analy and Smulaton of Actve lamped Qua-Reonant D Lnk Invete Bal Mukund Shama A. N. Twa K. P. Sngh Abtact Th pape popoe a mulaton developed to ue pule wdth modulaton (PWM) technque wth the actve clamped qua- paallel eonant dc lnk (AQPRDL) nvete n ode top nceae the advantage of the PWM whch allow to educe the wtchng loe of the powe devce. The new AQPRDL enue zeo cong fo a tme peod and at any tme equed fo oft wtchng (SS) and PWM opeaton of the nvete epectvely. The pncple of opeaton analyzed and vefed by PSPIE mulaton. Index Tem PWM AQPRDL AQPRDL nvete oft wtchng oft wtchng nvete mulaton. I. INTRODUTION Reonant technque ae ued geneally to povde oft wtchng n oft wtchng nvete (SSI). In fact th not a new dea becaue eonant ccut had been ued to acheve the foced commutaton of thyto fo many yea. SS nvete ae dvded nto two boad categoe namely pole commutated and eonant dc lnk nvete (PI and RDLI). Whle PI bacally ha one eonant tank pe pole o leg and a capablty of PWM opeaton RDLI ha one common tank on dc lnk but not the PWM opeaton capablty. Moeove PI ha moe component and a hghe cot than t RDLI countepat [-4]. Soft wtchng nvete have been popoed to mnmze the wtchng loe. One of the mot ucceful and popula oft wtchng topologe the eonant bank n the D lnk and a contol tategy called gma delta modulaton technque popoed by ecent pape. One of the bgget poblem of the eonant lnk nvete that the contol tategy of the nvete not capable of offeng faclte of PWM technque uch a mpovng the output voltage of the nvete by nceang the wtchng fequency. So fa e few tude have been epoted to ovecome th poblem [-4]. A lot of eeach on RDLI havng the cheapet oluton fo SS ha been peented n ecent yea. RDL nvete ae dvded nto two majo goup namely bac eonant and paallel eonant dc lnk nvete (BRDLI and PRDLI). The nvete connected to the voltage ouce va an nducto thee not the PWM opeaton capablty and the nvete voltage te vey hgh n the BRDLI bacally. To etct the voltage te the actve and pave clamped (A and P) BRDL nvete have been mpoved. Alo the qua eonant (QR) ubgoup of thee nvete have been peented to povde the PWM opeaton capablty fo thee nvete whch can geneally opeate wth dcete pule modulaton (DPM) []-[] [6] [8]-[][4]. In th tudy a new AQPRDL ccut fo SS nvete peented. It enue that dc lnk voltage fall to zeo at any tme equed and tay at zeo fo a tme peod needed. Thu t povde SS and PWM opeaton fo the nvete. Alo the new AQPRDL opeate unde SS mplemented by ung only one auxlay actve wtch and o ha a mple tuctue and eae of contol. The popoed nvete analyzed and mulated whch llutated n g.. The mulaton eult obtaned fom the nomal PWM nvete wee compaed wth the eut obtaned fom the popoed AQPRDL nvete. Manucpt eceved Octobe Bal Mukund Shama M. M. M. Engg. ollege Goakhpu (Inda) MOBILE NO Emal: hama.balmukund@gmal.com A. N. Twa M. M. M. Engg. ollege Goakhpu (Inda) K. P. Sngh M. M. M. Engg. ollege Goakhpu (Inda). g. The ccut confguaton AQPRDL nvete. 89

2 Analy and Smulaton of Actve lamped Qua-Reonant D Lnk Invete II. OPERATION AND ANALYSIS O THE AQPRDL The popoed AQPRDL nvete hown n g. cont of a dc lnk wtch S auxlay wtch S eonant nducto L eonant capacto. D T nv and I o ae the equvalent element of the nvete feedng an ac moto a a load. To mplfy the analy all the component ( emconducto wtche dode nducto and capacto ) ae aumed deal. S D T D T L L D D V I - + v D D Invete T nv e e v = [(V V )co( ω (t t)) (I L + I)n( ω (t t)) I ( V V )] (t t) + V (6) + e e v = [(V V )co( ω (t t)) (I L + I)n( ω (t t)) I ( V V )] (t t) + V (7) + ae obtaned. In thee equaton e = (8) + ω (9) = / Le = () L / e ae vald. The voltage of the capacto fall to zeo and o the dode D tat conductng unde VS at the end of th nteval at t. g. Equvalant ccut of the popoed AQPRDL nvete fo explanaton of the lnk opeaton. To llutate the oft wtchng chaactetc of the popoed technque the opeaton can be dvded n to nne opeatng nteval. The opeatng wavefom n dffeent nteval of opeaton ae hown n g.. Inteval ( t t ): At t= t a the wtch T n the on tate and the tun on gnal appled to the gate T and th mode tat. o th mode the followng S T D equaton can be wtten a Inteval ( t t ): At t= t a the dode D tuned on a ee eonance tat va - L - T -D. o th eonance V = IL co( ω(t t )) n( ω (t t )) () L v V co( ω (t t )) + I L n( ω (t t = )) () ae obtaned. When the cuent L of the nducto dop to zeo and T tuned off unde VS and S at t th mode fnhed. V = n( ω (t t )) () L v = V co( ω (t t )) + V () Inteval ( t t ): The wtch T tuned off at the begnnng of th mode. A paallel eonance tat va the eonant path - L - T -. o th eonance e V V L = (IL + I)co( ω(t t)) + n( ω (t t)) e I () 9

3 Intenatonal Jounal of Soft omputng and Engneeng (IJSE) ISSN: -7 Volume- Iue- Novembe v GET v GET T D L v v v T v T I I +L +I Lmax -I Lmax V max V V V I + V 4] (t t 4 ) + V4 (6) + e e v = [ V4 co( ω (t t 4)) + ( )I n( ω(t t4)) I + V 4 ] (t t 4 ) (7) + ae obtaned. When voltage eache the ouce voltage V at t the dode D tuned on and th nteval top. Inteval 6 ( t t6 ): Jut afte the dode D tuned on at t 6 a ee eonance tat va L D V D. o th tage V V = IL co( ω(t t )) + n( ω(t t )) (8) L v = (V V )co( ω (t t )) + I n( ω (t t )) + V (9) L ae obtaned. When the voltage of the capacto fall to zeo and the dode D tuned on unde VS at t 7 th nteval fnhed. g. Opeatng wavefom of the popoed nvete n dffeent nteval of opeaton. Inteval 4 ( t t 4 ): The dode D tuned on unde VS. o th nteval V = n( ω(t t )) () L v V co( ω(t t = )) (4) can be wtten. When the cuent L of the nducto dop to - I and the dode D tuned off unde VS at t th mode fnhed. Inteval ( t 4 t ): At t= t a the dode tuned off a paallel eonance tat va D. o th eonance V L D e 4 e L = ( )I co( ω (t t4)) n( ω (t t4)) I () t t t t t 4 t t 6 t 7 t 8 e e v = [ V4 co( ω (t t4)) + ( )I n( ω (t t4)) t =t 9 t Inteval 7 ( t6 t7 ): At the begnnng of th mode the dode D tuned on. o th mode V = I () L (t t 6 ) + L L6 can be wtten. L = - I the dode D tuned off and T tuned on unde VS th mode fnhed. Inteval 8 ( t7 t8 ): At t = t 7 T tuned on. o th mode V L = (t t 7 ) I () L ae obtaned. When the cuent L of the nducto dop to zeo the dode D and D ae tuned off unde S th nteval fnhed. Inteval 9 ( t8 t9 ): Dung th mode the load fed by the dc voltage ouce va the man tanto T. The duaton of th mode a lage pat of the wtchng cycle of the PRDL ccut. onequently one wtchng cycle completed and anothe cycle tat at t = t 9 = t. 9

4 Analy and Smulaton of Actve lamped Qua-Reonant D Lnk Invete The popoed nvete ha the followng advantage:. All emconducto devce n the ccut ae wtched unde oft wtchng. The man wtch tuned on and off wth VS. The auxlay wtch tuned on wth S and off wth VS. The equvalent dode opeate unde VS and the auxlay dode tuned on unde VS and tuned off unde S.. The man wtch of th ccut and alo all wtche of the nvete condeed to contol ae not ubjected to any addtonal voltage tee. Moeove the cuent tee on the man and auxlay devce of the ccut ae vey low.. The PRDL ccut ha a moe mple tuctue and moe eae of contol than mot of the mla ccut peented pevouly. Becaue the ccut ealzed by ung only one auxlay wtch an auxlay dode and a eonant nducto and a eonant capacto. 4. The new PRDL enue zeo cong on the D lnk voltage at any tme and fo a tme peod equed fo the PWM and SS opeaton of the nvete epectvely.. The cculatng enegy qute mall and t lghtly dependent on the load cuent becaue the fall and the e of the zeo cong ae povded by nealy a quate eonance. voltage n the qua- eonant ccut. g.4(d) how the voltage and cuent wavefom of the man wtch opeatng at had wtchng condton. om th fgue t can be een that the man wtch tuned on and the man dode tuned of wth had wtchng multaneouly and alo a hot ccut by mean of thee man devce occu at the ame tme. Alo the man wtch tuned off wth had wtchng loe of vey hgh value occue n th had wtchng cae. om the voltage and cuent wavefom of the man wtch S gven n g.4(e) fo the oft wtchng cae t can be een that S tuned on and off wth VS though the nducto L and the capacto and o the wtchng loe of S ae nealy zeo. om the voltage and cuent wavefom of the auxlay tanto T gven n g.4(f) fo the oft wtchng t clealy een that T tuned on unde S by the nducto L and tuned off unde VS by the capacto and o the wtchng loe of T ae nealy zeo. Although the peak value of eonant nducto cuent geate than the peak load cuent the m value of th cuent much lowe than that of the load cuent. The oft wtchng of the devce n the AQPRDL alo contbute to low powe lo. 6. The auxlay wtch and dode devce ae ubjected to a voltage by nealy twce the nput voltage. It can be condeed a a dawback of the new ccut. III. SIMULATION RESULTS ompute mulaton fo the AQPRDL nvete wa conducted wth PSPIE. The paamete ued n the mulaton wee V = V; L =68µH; =68n; =n. The dc lnk voltage eonant nducto cuent eonant capacto voltage and obtaned fom a PSPIE mulaton ae peented n g.4 (a)-(f).smulated eult wee obtaned wth a load cuent of about A. (a) g.4(a) how the dc lnk voltage nput to the nvete can be pulled down to zeo and can etun to nomal dc lnk voltage quckly a expected. The zeo voltage peod hot and n the ode of the wtchng tme of the nvete. The mulated cuent n eonant nducto hown n g.4(b). g.4(c) how the eonant capacto 9

5 Intenatonal Jounal of Soft omputng and Engneeng (IJSE) ISSN: -7 Volume- Iue- Novembe (b) (e) (c) (f) (d) g.4 PSPIE mulaton of the AQPRDL nvete ccut (a) D lnk voltage (b) uent n eonant nducto L (c) Voltage aco eonant capacto (d) The voltage and cuent of S fo had wtchng (e) The voltage and cuent of S fo oft wtchng (f) The voltage and cuent of S fo oft wtchng. 9

6 Intenatonal Jounal of Soft omputng and Engneeng (IJSE) ISSN: -7 Volume- Iue- Novembe IV. ONLUSION In th tudy a new AQPRDL ccut peented. Th ccut povde zeo cong on the dc lnk to mplement the SS and PWM opeaton of the nvete. The new ccut combne mot deable featue of the ccut peented pevouly and ovecome mot dawback of thee ccut by ung only one auxlay tanto. The opeatng pncple of a mple utable fo VS nvete ha been explaned and t opeaton unde dffeent mode analyzed.the popoed AQPRDL ccut mple and ha the advantage of mnmum voltage te nubbele VS fo nvete wtche and poblty of hgh fequency opeaton. onequently new AQPRDL ccut wa analyzed n detal. It wa obeved that the theoetcal analy of th ccut wa exactly vefed by PSPIE mulaton of a W and khz AQPRDL ccut. Refeence: [] G. VENKATARAMANAN AND D.M. DIVAN PULSE WIDTH MODULATION WITH RESONANT D LINK ONVERTERS IEEE TRANS. ON IND. APPL. VOL.9 NO. 99 PP. -. [] D. M. Dvan and G. Venkataamanan Degn Methodologe fo Soft Swtched Invete IEEE Tan. on Ind. Appl. Vol.9 no. 99 pp. 6-. [] D. M. Dvan L. Malean and P. Tent V. Togo A Synchonzed Reonant D Lnk onvete fo Soft-Swtched PWM IEEE Tan. on Ind. Appl. Vol.9 No. 99 pp [4] J. He N. Mohan and B. Wold eo-voltage-swtchng PWM Invete fo Hgh- equency D-A Powe onveon IEEE Tan. on Ind. Appl. Vol.9 No. 99 pp [] L. Malean P. Tent P. Toman and V. Togo Hgh Effcency Qua-Reonant D Lnk Thee-Phae Powe Invete fo ull-range PWM IEEE Tan. on Ind. Appl. Vol. No. 99 pp [6] V. V. Dehpande and S. R. Doadla A New Topology fo Paallel Reonant D Lnk wth Reduced Peak Voltage IEEE Tan. on Ind. Appl. Vol. No. 996 pp. -7. [7] Y.. Jung H. L. Lu and G. H. ho Soft Swtchng Space Vecto PWM Invete Ung a New Qua-Paallel Reonant D Lnk IEEE Tan. on Powe Electon. Vol. No. 996 pp. -. [8] S. hen and T. A. Lpo A Novel Soft-Swtched PWM Invete fo A Moto Dve IEEE Tan. on Powe Electon. Vol. No pp [9] V. V. Dehpande S. R. Doadla and D. M. Dvan A uent-pedcton Scheme fo the PRDL Invete-ed Inducton Moto Dve IEEE Tan. on Powe Electon. Vol. No. 997 pp [] V. V. Dehpande and S. R. Doadla A Detaled Study of Loe n the Reduced Voltage Reonant Lnk Invete Topology IEEE Tan. on Powe Electon. Vol. No. 998 pp [] Y. hen A New Qua-Paallel Reonant D Lnk fo Soft-Swtchng PWM Invete IEEE Tan. on Powe Electon. Vol. No. 998 pp [] V. Pcket and. M. Johnon Thee-Phae Soft-Swtchng Voltage Souce onvete fo Moto Dve. Pat : Ovevew and Analy IEE Poc.-Elect. Powe Appl. Vol.4 No. 999 pp [] H. Bodu I. Akoy H. Obdan "A New Actvely lamped Qua Paallel Reonant D Lnk cut" 9 th Natonal onfeence on Electcal-Electonc-ompute Engneeng9- Septembe Kocael p.p [4] H. Obdan H. Bodu I. Akoy N. Bekoglu G. Yıldımaz A New Paallel Reonant D Lnk fo Soft Swtchng Invete Electc Powe omponent and Sytem vol. no. pp eb. 94