Design and implementation of interleaved boost converter for fuel cell systems R. Seyezhai*, B.L. Mathur Department of EEE, SSN College of Engineering, Chennai, India article info Article history: Received 23 August 2011 Received in revised form 15 September 2011 Accepted 16 September 2011 Available online 22 October 2011 Keywords: Fuel cell Directly coupled IBC SiC Switching losses abstract Fuel cell is one of the promising renewable and sustainable power sources because of its high power density and very low emission. It can be utilized as a clean power source for various applications such as portable electronic appliances, transportation and residential building. In order to design a highly efficient fuel cell power system, a suitable DCeDC converter is required. Among the various topologies of DCeDC converters, interleaved boost converter (IBC) has been proposed as a suitable interface for fuel cells to convert low voltage high current input into a high voltage low current output. The advantages of interleaved boost converter compared to the classical boost converter are low input current ripple, high efficiency, faster transient response, reduced electromagnetic emission and improved reliability. In the proposed interleaved converter, the front end inductors are magnetically coupled to improve the electrical performance and reduce the weight and size. This paper focuses on a three-phase directly coupled IBC using CoolMOS transistor and Silicon carbide (SiC) diode instead of the classical two-phase reported in the literature based on the tradeoff between the ripple content, cost and complexity. Mathematical analysis of overall current ripple, design equations and switching loss studies for IBC have been presented. Simulation of IBC interfaced with fuel cells have been performed using MATLAB/SIMULINK. Hardware prototypes have been built to validate the results. Copyright ª 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. 1. Introduction Fuel cells have gained attention in recent years as an attrac- tive technology for growing energy request and cleaner envi- ronment [1,2]. Among several types of fuel cells, Proton Exchange Membrane Fuel Cell (PEMFC) is chosen for this work because of its features like low operating temperature, fast start-up, low sensitivity to orientation, long cell and stack life and low corrosion [3]. Fuel cells operate at low DC voltages (typically 600 mV per cell) and therefore a number of cells are connected in series. As a long string of cells is difficult to operate, DCeDC boost converter is generally used to further boost the voltage to the required level. Various topologies such as boost, buck and series resonant full-bridge and push-pull converters have been proposed in the literature [4,5]. But these topologies add objectionable ripples in the current flowing out of the fuel cell. To minimize the ripples, an IBC has been proposed as an interface for fuel cells as it reduces the source current ripple. In addition, interleaving provides high power capability, modularity and improved reliability [6]. A three-phase directly coupled IBC using CoolMOS switches has been proposed in this paper compared to the conventional 2-phase IBC. The application of coupled inductor in IBC where a core is shared by multiple converters results in reduced parts count, volume and weight, improved input and inductor current ripple characteristics. * Corresponding author. Fax: þ91 44 27474844/45/46x230. E-mail addresses: [email protected](R. Seyezhai), [email protected](B.L. Mathur). Available online at www.sciencedirect.com journal homepage: www.elsevier.com/locate/he international journal of hydrogen energy 37 (2012) 3897 e3903 0360-3199/$ e see front matter Copyright ª 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. doi:10.1016/j.ijhydene.2011.09.082
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Design and implementation of interleaved boost converter ... · 3-phase interleaved boost converter is the CoolMOStransistor and SiC diode. The main benefits of CoolMOS are lower
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i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n en e r g y 3 7 ( 2 0 1 2 ) 3 8 9 7e3 9 0 3
Available online at w
journal homepage: www.elsevier .com/locate/he
Design and implementation of interleaved boost converterfor fuel cell systems
R. Seyezhai*, B.L. Mathur
Department of EEE, SSN College of Engineering, Chennai, India
i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n en e r g y 3 7 ( 2 0 1 2 ) 3 8 9 7e3 9 0 3 3903
CSD 100060. The choice of SiC diode and CoolMOS transistor
for IBC has led to reduced switching losses. From these
results, directly coupled IBC with CoolMOS transistor and
SiC diode proves to be a suitable candidate for fuel cell
interface.
r e f e r e n c e s
[1] Jain IP. Hydrogen the fuel for 21st century. Int J HydrogenEnergy 1990;15(5):345e8.
[2] Winter CJ. Hydrogen energy-abundant, efficient, clean:a debate over the energy system of change. Int J HydrogenEnergy July 2009;34(14):S1e52.
[3] Peighambardoust SJ, Rowshanzamir S, Amjadi M. Reviewof the proton exchange membranes for fuel cellapplications. Int J Hydrogen Energy Sept.2010;35(17):9349e84.
[4] Kovacevic G, Tenconi A, Bojoi R. Advanced DC-DC converterfor power conditioning hydrogen fuel cell systems. Int JHydrogen Energy June 2008;33(12):3215e9.
[5] Choe GY, Kang HS, Lee BK, Lee WL. Design consideration ofinterleaved converters for fuel cell applications. IEEE ICEMS;2007:238e43. Seoul.
[6] Kosai H, McNeal S, Page A, Jordan B, Scofield J, Ray. B.Characterizing the effects of inductor coupling on theperformance of an interleaved boost converter. CARTS USA;2009:237e51.
[7] Shin HB, Park JG, Chung SK, Lee HW, Lipo TA. Generalizedsteady-state analysis of multiphase interleaved boostconverter with coupled inductors. IEE Electronics Power Appl2005;152(3):584e94.
[8] Lee P, Lee Y, Cheng DKW, Liu X. Steady-state analysis of aninterleaved boost converter with coupled inductors. IEEETrans Ind Electron 2000;47(4):787e95.
[9] Huber L, Irving BT, Jovanovic. MM. Closed-loop controlmethods for interleaved DCM/CCM boundary boost PFCconverters. IEEE APEC; 2009:991e7.
[10] Thounthong P, Sethakul P, Rael S, Davat B. Design andimplementation of 2-phase interleaved boost converter forfuel cell power source. IET ICPEMD; 2008:91e5.
[11] Xu H, Qiao E, Guo X, Wen X, Kong L. Analysis and design ofhigh power interleaved boost converters for fuel celldistributed generation system. IEEE PESC; 2005:140e5.
[12] Veerachary M, Senjyu T, Uezato K. Modeling and analysis ofinterleaved dual boost converter. IEEE ISIE June 2001;2:718e22. 2001.
[13] Veerachary M, Senjyu T, Uezato K. Small-signal analysis ofinterleaved dual boost converter. Int J Circuit TheoryApplications 2001;29(6):575e89.
[14] Wai RJ, Duan RY. High step-up converter with coupled-inductor. IEEE Trans Power Electronics 2005;20(5):1025e35.
[15] Dahono PA, Riyadi S, Mudawari A, Haroen. Y. Outputs rippleanalysis of multiphase DC-DC converter. IEEE ICPEDS; 1999:626e31.
[16] Miwa BA, Dtten DM, Schlecht. MF. High efficiency powerfactor correction using interleaving technique. IEEE APEC1999;1:557e68.
[17] Todorovic MH, Palma L, Enjeti PN. Design of a wide inputrange DC-DC converter with a robust power control schemesuitable for fuel cell power conversion. IEEE Trans IndElectron 2008;55(3):1247e55.
[18] Luo FL, Hong Ye, Rashid. M. Digital power electronics andapplications. Academic Press; 2009.
[19] Erickson RW, Maksimovic D. Fundamentals of powerelectronics. 2nd ed. Kluwer Academic Publishers; 2001.