AUTHORS: Byamakesh Nayak, Tanmoy Roy Choudhury

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ABSTRACT: In this paper, an overall comparison between the Boost Converter (BC) & Cascaded Converter or Cascaded Boost Converter (CBC) is given in terms of ideal condition, as well as with the consideration of Equivalent Series Resistance (ESR) of inductor. The loss comparison in the two converters due to the ESR is also included in this paper. It is seen that in CBC, voltage gain is more but the power loss due to ESR is also more compared to the BC. The parameters of the converters are found out with a consideration of per unit ripple quantity of inductor current and capacitor voltage. A boundary condition between the continuous conduction mode (CCM) & discontinuous conduction mode (DCM) of the inductor current is also shown. The behaviour of the capacitor current for the converters is discussed during ON and OFF condition of the switch(es). At the end, the simulation results of both the converters are given for a 20V/100V, 100 W output. The analysis and simulation results are presented in this paper for the verification of the feasibility.

KEYWORDS: boundary condition, capacitor current, cascaded converter, DC-DC converter, inductive ESR, ESR loss comparison, simulation

REFERENCES:

[1] Morales-Saldana, J.A. ; Galarza-Quirino, R. ; Leyva-Ramos, J. ; Carbajal-Gutierrez, E.E. ; OrtizLopez, M.G., “Modeling and Control of a Cascaded Boost Converter with a Single Switch,” IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics, , Year: 2006 , Pp: 591 – 596,

[2] R. Samuel Rajesh Babu M. E. , S.Deepa M.E, S.Jothivel M.E, A Closed Loop Control of Quadratic PID Controller, International Journal of Engineering (IJE), TRANSACTIONS B: Applications Vol. 27, No. 11, (November 2014) 1653-1662

[3]Smallwood, C., 'Distributed generation in autonomous and Non autonomous micro grids,”IEEE in Rural Electric Power Conference,(2002), D11-D16.

[4] Luo, F.L., 'Switched-capacitorized DC/DC converters', 4th IEEE Conference on Industrial Electronics and Applications, ICIEA., IEEE., (2009), 1074-1079.

[5] Abutbul, O., Gherlitz, A., Berkovich, Y. and Ioinovici, A., 'Step-up switching-mode converter with high voltage gain using a switched-capacitor circuit', IEEE Transactions on Circuits and Systems I:Fundamental Theory and Applications, , Vol. 50, No. 8, (2003), 1098-1102.

[6] Luo, F.L. and Ye, H., 'Positive output multiplelift push-pull switched-capacitor luo-converters', IEEE Transactions on Industrial Electronics, , Vol. 51, No. 3, (2004), 594-602.

[7] Geoffrey R. Walker, Paul C. Sernia,” Cascaded DC–DC Converter Connection of Photovoltaic Modules,” IEEE Transactions on Power Electronics, vol. 19, NO. 4, July 2004, pp- 1130 – 39.

[8] Keshav Patidar, Amod C. Umarikar,” High stepup converters based on quadratic boost converter for micro-inverter,” Electric Power Systems Research 119 (2015) 168–177.

[9] T. Wang, Y. Tang,”A high step-up voltage gain DC–DC converter for micro-inverter,”8th IEEE Conference on Industrial Electronics and Applications(ICIEA), 2013, pp. 1089–1094.

[10] M. A. G. de Brito, L. P. Sampaio, L. G. Junior,C. A. Canesin, “Research On Photovoltaics: Review, Trends And Perspectives',Brazilian Power Electronics Conference (COBEP), 2011,pp531-537.

[11] S. B. Kjaer, J. K. Pedersen, F. Blaabjerg, 'A Review of Single-Phase Grid-Connected Inverters for Photovoltaic Modules' IEEE Transactions on Industry Applications, vol. 41, no. 5, Year: 2005 , Page(s): 1292 – 1306.

[12] Nayak, B.; Dash,S.S.;” Battery Operated Closed Loop Speed Control of DC Separately Excited Motor by Boost-Buck Converter”, IEEE 5th India International Conference on Power Electronics (IICPE), 2012 , pp – 1-6.

[13]Rosas-Caro, J.C.;Ramirez,J.M.; Peng, F.Z.;Valderrabano, A.,”A DC-DC multilevel boost converter” IET,Power Electronics, Vol:3 (1),Year: 2010,pp-129-137.

[14] Esram T, Chapman PL,” Comparison of photovoltaic array maximum power point tracking techniques,” IEEE Trans Energy Convers 2007;22(2) pp:439-49.

[15] Gerard M, Crouvezier JP, Pera DA.,” Ripple current effects on PEMFC aging test by experimental and modeling.” J Fuel Cell Sci Technol 2011;8.

[16] N. Mohan, T. M. Undeland, W. P. Robbins; Power Electronics : Converters, Applications and Design,” Third Ed, Reprint 2010, pp- 172-173, Willey India (P) Ltd., ISBN : 978-81-265-1090-0.

[17] Maksimovic, D.;Cuk, Slobodan,” Switching converters with wide DC conversion range”, IEEE Transactions on Power Electronics, Vol: 6 , Issue: 1,Year:1991, pp- 151-157.

[18] George Cajazeiras Silveira, Fernando Lessa Tofoli, Luiz Daniel Santos Bezerra, and René Pastor Torrico-Bascopé,” A Nonisolated DC–DC Boost Converter With High Voltage Gain and Balanced Output Voltage,” IEEE Transactions on Industrial Electronics, vol. 61, no. 12, 2014, pp – 6739-46.

[19] O. Lopez-Santos, L. Martinez-Salamero, G. Garcia, H. Valderrama-Blavi,and D. O. Mercuri, “Efficiency analysis of a sliding-mode controlled quadratic boost converter,” IET Power Electron., vol. 6, no. 2, pp. 364–373, 2013.

[20] Byamakesh Nayak, Saswati Swapna Dash;” Transient Modeling of Z-Source Chopper with and without ESR used for Control of Capacitor Voltage,” WSEAS Transactions on Circuits and Systems, Vol 13, 2014, pp – 175-187.

[21] J. Leyva-Ramos, M. G. Ortiz-Lopez, and L. H. Diaz-Saldierna;” The Effect of ESR of the Capacitors on Modeling of a Quadratic Boost Converter,” 11th workshop on Control and Modeling for Power Electronics, COMPEL- 2008, pp- 1-5