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SiC vs. Si-Based Isolated DC-DC Converters: Assessment of Power Loss and Mass Gains Using a Multiobjective Optimization Tool

Olivier Deblecker(1*), Zacharie De Grève(2), Christophe Versèle(3)

(1) University of Mons, Belgium
(2) University of Mons, Belgium
(3) University of Mons, Belgium
(*) Corresponding author



In this contribution, the power losses and mass of multiobjective optimal designed isolated dc-dc converters are compared, based on Si and SiC technologies. To that end, a computer-aided design (CAD) tool, previously published by the authors, is used. The database of the existing tool is enriched with wide band gap semiconductor devices currently available from manufacturers. The results are presented for two switch-mode power supplies operating at very different power levels. The gains in terms of power losses and mass from one technology to the other can advantageously be quantified thanks to the CAD tool
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Multiobjective Optimization; Switch-Mode PowerSupply; SiC devices

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N. Mohan, T. Undeland, and W. Robbins, Power Electronics: converters, applications and design (Wiley 3rd ed., 2003).

C. Versèle, O. Deblecker, and J. Lobry, A computer-aided design tool dedicated to isolated dc-dc converters based on multiobjective optimization using genetic algorithms, COMPEL Int. J. for Computation and Mathematics in Electrical and electronic eng., vol. 31, n°2, 2012, pp. 583–603.

C. Versèle, O. Deblecker, and J. Lobry, A decision-making aid tool dedicated to the design of auxiliary railway power supplies, EJEE Eur. J. of Electr. Eng., vol. 14, n°4, 2011, pp. 421-450.

O. Deblecker, C. Versèle, Z. De Grève, and J. Lobry, Multiobjective Optimization of a Power Supply for Space Application Using a Flexible CAD Tool, in Proc. of the EPE'13 – ECCE Europe, Lille, France, Sep. 2013.

J. Millan, Ph. Godigon, X. Perpi-à, A. Pérez-Tomás, and J. Rebollo, A survey of wide band gap semiconductor power devices, IEEE Trans. Power Electr., vol. 29, n°5, May 2014, pp. 2155-2163.

G. Civrac, Vers la réalisation de composants haute tension, forte puissance sur diamant CVD. Développement des technologies associées, Ph.D. dissertation, INP Toulouse, 2010.

N. Kaminsky, State of the art and the future of wide-band gap devices, in Proc. of the EPE'09, Barcelona, Spain, Sep. 2009.

J. Biela, M. Schweizer, S. Waffler, and J.W. Kolar, SiC versus Si—Evaluation of Potentials for Performance Improvement of Inverter and DC–DC Converter Systems by SiC Power Semiconductors, IEEE Trans. on Industrial Electr., vol. 58, n°7, Jul. 2011, pp. 2872-2882.

Microsemi. Gallium nitride (GaN) versus silicon carbide (SiC) in the high frequency (RF) and switching power applications, 2010 [url:] (accessed 2 Dec. 2013)]. B. Ozpinci, L. M. Tolbert, S. K. Islam, and M. Chinthavali, Comparison of wide bandgap semiconductors for power applications, in Proc. EPE'03, Toulouse, France, Sep. 2003.

P. Roussel, SiC market and industry update, presented at the Int. SiC Power Electron. Appl. Workshop, Kista, Sweden, 2011. F. Leroy, N. Le Gallou, C. Delepaut, O. Deblecker, F. Dualibe, A Very High Frequency Step-Down DC/DC Converter for Spaceborne Envelope-Tracking SSPA, in Proc. of International Microwave Symposium (IMS) 2014, Tampa Bay (FL), USA, Jun. 2014.

W. Schokley, Introductory remarks on silicon carbide, a high-temperature semiconductor (Pergamon Press, 1960).

R. Mousa, Caractérisation, modélisation et intégration du JFET de puissance en carbure de silicium dans des convertisseurs haute température et haute tension, Ph.D. dissertation, Institut National des Sciences Appliquées de Lyon, 2009. M. C. J. C. M. Krämer, Gallium nitride-based microwave high-power heterostructure field effect transistors – design, theory and characterization, Ph.D. dissertation, Technische Universiteit Eindhoven, 2006. C. Versèle, Contribution à l'optimisation multiobjectif de convertisseurs électroniques de puissance. Application aux convertisseurs continu-continu isolés, Ph.D. dissertation, University of Mons, 2012.

K. Deb, A. Pratap, S. Agarwal, and T. Meyarivan, A fast and elitist multiobjective genetic algorithm: NSGA-II, IEEE Trans. on Evolutionnary Computation, vol. 6, n°2, 2002, pp. 182-197.

C. Versèle, O. Deblecker, and J. Lobry, Multiobjective optimal choice and design of isolated dc-dc power converters, in Proc. of the EPE – ECCE Europe 2011, Birmingham, UK, Sep. 2011

Versele, C., Deblecker, O., Lobry, J., Rigorous choice of optimal isolated DC-DC converter architectures using response surface method, (2012) International Review of Electrical Engineering (IREE), 7 (4), pp. 4705-4713.

Application manual (Semikron, 2010). [url:]. (accessed 30 Aug. 2010)

W. G. Hurley, W. H. Wölfle, and J. G. Breslin, Optimized transformer design: inclusive of high frequency effects, IEEE Trans. on Power Electr., vol. 13, n°4, 1998, pp. 651-659.

Versele, C., Deblecker, O., Lobry, J., Multiobjective optimal design of medium frequency transformers for full-bridge DC-DC converters, (2010) International Review of Electrical Engineering (IREE), 5 (4), pp. 1354-1363.


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