Dimmable Single-stage Sepic-buck Converter for Led Lighting With Reduced Storage Capacitor

M. R. Cosetin; T. E. Bolzan; E. A. Bitencourt; M. F. da Silva; J. M. Alonso; R. N. do Prado

doi:10.18618/REP.2014.2.163172

Authors

M. R. Cosetin Federal University of Santa Maria - UFMS - Brazil
T. E. Bolzan Federal University of Santa Maria - UFMS - Brazil
E. A. Bitencourt Federal University of Santa Maria - UFMS - Brazil
M. F. da Silva Federal University of Santa Maria - UFMS - Brazil
J. M. Alonso Universidad de Oviedo, DIEECS - Tecnología Electrónica - SPAIN
R. N. do Prado Federal University of Santa Maria - UFMS - Brazil

DOI:

https://doi.org/10.18618/REP.2014.2.163172

Keywords:

Electrolytic Capacitor Substitution, Integrated Converters, LED Driver, SEPIC

Abstract

This paper presents an analysis and design of a Light Emitting Diode (LED) driver aiming to eliminate or substitute the electrolytic capacitors. Considering the low lifetime of electrolytic capacitors compared to LEDs, this topology aims for reducing the storage capacitance and replaces it by a longer lifetime capacitor, increasing the overall system life span. This reduction is based on designing of the control dynamic with a compromise between the input current distortion and the output current ripple. The power factor correction (PFC) stage is based on a Single Ended Primary Inductance Converter (SEPIC) operating under discontinuous conduction mode (DCM) because of its low input current distortion characteristic making it possible to eliminate the electromagnetic interference (EMI) filter. The power control (PC) stage is performed by a Buck converter using its output current source behavior, suitable for LED application. A 106 W LED driver prototype is implemented resulting in 27.1% total harmonic distortion (THD), 50% current ripple on the LED and an efficiency of 92.18%. Furthermore an effective simple dimming strategy is proposed and implemented by an LED parallel active switch.

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Author Biographies

M. R. Cosetin, Federal University of Santa Maria - UFMS - Brazil

was born in Horizontina, Brazil, in 1985. He received the B.S. degree in 2011 (with honors) and the M.S. degree in 2013 in electrical engineering from Federal University of Santa Maria (UFMS), Brazil. Currently, he is student of the Ph.D. program at the same University. In the first semester of 2011 he held Supervised Internship at Fraunhofer Institute for Reliability and Microintegration – IZM – Berlin, Germany. He is researcher of Electronic Ballast Research Group (GEDRE) since 2007. His main areas of interest includes: intelligent lighting, electronics ballast, DC/DC converters, power factor correction stages, dimming systems, light-emitting-diode (LEDs), and renewable energy systems.

T. E. Bolzan, Federal University of Santa Maria - UFMS - Brazil

Was born in Santa Maria, RS, Brazil, in 1994. She is undergraduated in electrical engineering at Federal University of Santa Maria and she has been a researcher with the Electronic Ballast Research Group (GEDRE) since 2010. Her main areas of interest include: DC/DC converter, light-emitting-diode (LEDs) and integrated converters.

E. A. Bitencourt, Federal University of Santa Maria - UFMS - Brazil

was born in Santa Maria, RS, Brazil, in 1993. He is an undergraduate student of electrical engineering at Federal University of Santa Maria (UFSM), Brazil. Currently, he has been exchange student by the Brazilian program Science without Borders at the University of Padova, Italy. He was researcher of Electronic Ballast Research Group (GEDRE) since 2011. His main areas of interest includes: intelligent lighting, DC/DC converters, integrated converters, power factor correction stages and LED lightning systems.

M. F. da Silva, Federal University of Santa Maria - UFMS - Brazil

was born in São Paulo, Brazil, in 1970. He received the B.S., M.Sc. and Ph.D. degree in electrical engineering from the Federal University of Santa Maria, Santa Maria, Brazil, in 1995, 2000 and 2012, respectively. He is currently working toward the Ph.D. degree in power electronic applied to lighting systems. Since 1993, he has been with the Federal University of Santa Maria, where he is currently a Professor in the Colégio Técnico Industrial de Santa Maria (CTISM). He also serves as a Reviewer for IEEE journal and conferences in the field of power electronics. He has been with the Electronic Ballast Research Group (GEDRE), Federal University of Santa Maria, as a Researcher. Electrical and Computational Systems Research and Development Group (GSEC) since 2010. His research interests include electronic ballast, lamps, dimming systems, power factor correction, fluorescent lamps and LEDs.

J. M. Alonso, Universidad de Oviedo, DIEECS - Tecnología Electrónica - SPAIN

(S'94, M'98, SM'03). He received the M. Sc. Degree and Ph. D. both in electrical engineering from the University of Oviedo, Spain, in 1990 and 1994 respectively. Since 2007, he is a full Professor at the Electrical Engineering Department of the University of Oviedo. Prof Alonso is co-author of more than three hundred journal and conference publications. His research interests include electronic ballast, LED power supplies, power factor correction, dc-dc converters, resonant inverters single-phase high frequency switching converters in general. He was supervisor of eight Ph.D. Thesis and he is the holder of seven Spanish patents. He has participated in more than fifty research projects and contracts with companies. Prof. Alonso has been awarded with the Early Career Award of IEEE Industrial Electronics Society in 2006. He was honored with the University of Oviedo Electrical Engineering Doctorate Award for 1996. He also holds three IEEE papers awards. Since 2002 he serves as an Associate Editor of IEEE Transactions of Power Electronics (2007) and IEEE Transactions on Industrial Electronics (2012) and has co-organized several conference special sessions. He also serves as secretary of the IEEE IAS Industrial Lighting and Display Committee (ILDC). He has been elected as Member-at-Large of the IEEE IAS Executive Board for the term 2013-2014. He is also member of the European Power Electronics Association and he belongs to the International Steering Committee of the European Conference on Power Electronics and Applications (EPE), where he has collaborated as topic co-chair since 2007.

R. N. do Prado, Federal University of Santa Maria - UFMS - Brazil

was born in Itapiranga, Brazil, in 1961. He received the B.Sc. degree from the Federal University of Santa Maria, Santa Maria, Brazil, in 1984, and the M.Sc. and Ph.D. degrees from the Federal University of Santa Catarina, Florianopolis, Brazil, in 1987 and 1993, respectively, all in electrical engineering. From 1987 to 1992, he was an assistant Professor in the Electronics Department, Federal University of Minas Gerais, Belo Horizonte, Brazil. Since 1993, he has been with the Federal University of Santa Maria, Brazil, where he is currently an Associate Professor in the Electrical Energy Processing Department. In 1997, He founded the Electronic Ballast Research Group (GEDRE). From 2005 to 2006, he was with the Fraunhofer Institute, Sankt Augustin, Germany, as a Postdoctoral Research Scholar. He has authored more than 250 technical papers published in conference proceedings and magazines. His research directions include high-frequency high-density power converters, fluorescent and high-pressure lamps, dimming systems, luminous efficiency, electronic ballasts, LED as a source light and power-factor correction. Dr. Prado is a founding member of the Brazilian Power Electronics Society, member of Brazilian Automatic Control Society, and several IEEE societies. Dr. Prado is a reviewer of the Brazilian Power Electronics Society, Brazilian Automatic Control Society, and several IEEE societies.

References

International Energy Agency, "Light's Labour's Lost - Policies for Energy-efficient Lighting", OECD, 2006.

[2] F. Li, D. Chen, X. Song, and Y. Chen, "LEDs: A Promising Energy Saving Light Source for Road Lighting," in Power and Energy Engineering Conference (APPEEC) 2009, pp. 1-3, May 2009. https://doi.org/10.1109/APPEEC.2009.4918460 DOI: https://doi.org/10.1109/APPEEC.2009.4918460

F. Zhang, J. Ni, and Y. Yu, "High Power Factor AC-DC LED Driver With Film Capacitors," IEEE Transactions on Power Electronics, vol. 28, no. 10, pp. 4831-4840, Oct. 2013. https://doi.org/10.1109/TPEL.2012.2233498 DOI: https://doi.org/10.1109/TPEL.2012.2233498

W. Chen and S. Y. R. Hui, "Elimination of an Electrolytic Capacitor in AC/DC Light-Emitting Diode (LED) Driver With High Input Power Factor and Constant Output Current," IEEE Transactions on Power Electronics, vol. 27, no. 3, pp. 1598-1607, Mar. 2012. https://doi.org/10.1109/TPEL.2010.2103959 DOI: https://doi.org/10.1109/TPEL.2010.2103959

M. R. Cosetin, P. C. V. Luz, M. F. da Silva, F. Bisogno, J. M. Alonso, and R. N. do Prado, "Single-stage SEPIC- Buck converter for LED lighting with reduced storage capacitor," in IECON 2012-38th Annual Conference on IEEE Industrial Electronics Society, 2012, pp. 4597-4603. https://doi.org/10.1109/IECON.2012.6389505 DOI: https://doi.org/10.1109/IECON.2012.6389505

M. R. Cosetin, P. C. V. Luz, M. F. da Silva, F. Bisogno, J. M. Alonso, and R. N. do Prado, "Long-lifetime SEPIC-buck integrated converter for LED lighting application," in 2012 10th IEEE/IAS International Conference on Industry Applications (INDUSCON), 2012, pp. 1-7. https://doi.org/10.1109/INDUSCON.2012.6451725 DOI: https://doi.org/10.1109/INDUSCON.2012.6451725

M. R. Cosetin, P. C. V. Luz, E. A. Bitencourt, M. F. da Silva, F. Bisogno, J. M. Alonso, and R. N. do Prado, "Off-line single-stage SEPIC-Buck converter for dimmable LED lighting with reduced storage capacitor," in 2013 15th European Conference on Power Electronics and Applications (EPE), 2013, pp. 1-10. https://doi.org/10.1109/EPE.2013.6631980 DOI: https://doi.org/10.1109/EPE.2013.6631980

M. R. Cosetin, E. A. Bitencourt, T. E. Bolzan, M. F. Silva, J. M. Alonso, and R. N. do Prado, "Comparison of single stage SEPIC and integrated SEPIC-Buck converter as off-line LED drivers," in Power Electronics Conference (COBEP), 2013 Brazilian, 2013, pp. 1134- 1139. https://doi.org/10.1109/COBEP.2013.6785257 DOI: https://doi.org/10.1109/COBEP.2013.6785257

EPCOS. "Product Catalog, Search by Product Parameter", <http://www.epcos.com>, 2012.

Y.-S. Jeon, D.-L. Jin, J.-M. Lee, J.-D. La, and Y.-S. Kim, "Design of high power factor single-stage flyback converter eliminating electrolytic capacitors and reducing 120[112] ripple on the output node in the LED lightings," in 2012 15th International Conference on Electrical Machines and Systems (ICEMS), 2012, pp. 1-5.

IEC 61000-3-2. "Limits for harmonic current emissions - Part 3-4: Limits". International Standards, International Electrotechnical Commission, Edition 3, 2005.

L. Gu, X. Ruan, M. Xu, and K. Yao, "Means of Eliminating Electrolytic Capacitor in AC/DC Power Supplies for LED Lightings," IEEE Transactions on Power Electronics, vol. 24, no. 5, pp. 1399-1408, May 2009. https://doi.org/10.1109/TPEL.2009.2016662 DOI: https://doi.org/10.1109/TPEL.2009.2016662

J. M. Alonso, A. J. Calleja, D. Gacio, J. Cardesin, and E. Lopez, "A long-life high-power-factor HIPS-lamp LED retrofit converter based on the integrated buck-boost buck topology," in IECON 2011 37th Annual Conference on IEEE Industrial Electronics Society, 2011, pp. 2860-2865. https://doi.org/10.1109/IECON.2011.6119766 DOI: https://doi.org/10.1109/IECON.2011.6119766

D. G. Lamar, J. Sebastian, M. Arias, and A. Fernandez, "On the Limit of the Output Capacitor Reduction in Power-Factor Correctors by Distorting the Line Input Current," IEEE Transactions on Power Electronics, vol. 27, no. 3, pp. 1168-1176, Mar. 2012. https://doi.org/10.1109/TPEL.2010.2075943 DOI: https://doi.org/10.1109/TPEL.2010.2075943

T. B. Marchesan, M. A. Dalla Costa, M. Perdigao, J. M. Alonso, and R. N. Prado, "Two Flyback-Based Integrated Converters for the Implementation of LFSW Electronic Ballasts," in Conference Record of the 2007 IEEE Industry Applications Conference, 2007. 42nd IAS Annual Meeting, 2007, pp. 463-470. https://doi.org/10.1109/07IAS.2007.75 DOI: https://doi.org/10.1109/07IAS.2007.75

X. Xu and A. Q. Huang, "A novel closed loop interleaving strategy of multiphase critical mode boost PFC converters," in Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition, 2008. APEC 2008, 2008, pp. 1033-1038.

M. F. da Silva, J. Fraytag, N. B. Chagas, M. E. Schlittler, M. A. Dalla Costa, R. A. Pinto, A. R. Seidel, and R. N. do Prado, "Single-stage high-power-factor dimmable lighting system for electrodeless fluorescent lamp," in 2011 IEEE International Symposium on Industrial Electronics (ISIE), 2011, pp. 390-395. https://doi.org/10.1109/ISIE.2011.5984190 DOI: https://doi.org/10.1109/ISIE.2011.5984190

D. Gacio, J. M. Alonso, J. Garcia, L. Campa, M. J. Crespo, and M. Rico-Secades, "PWM Series Dimming for Slow-Dynamics HPF LED Drivers: the High- Frequency Approach," IEEE Transactions on Industrial Electronics, vol. 59, no. 4, pp. 1717-1727, Apr. 2012. https://doi.org/10.1109/TIE.2011.2130503 DOI: https://doi.org/10.1109/TIE.2011.2130503

T.-F. Wu and Y.-K. Chen, "A systematic and unified approach to modeling PWM DC/DC converters based on the graft scheme," IEEE Transactions on Industrial Electronics, vol. 45, no. 1, pp. 88-98, Feb. 1998. https://doi.org/10.1109/41.661309 DOI: https://doi.org/10.1109/41.661309

J. M. Alonso, A. J. Calleja, F. J. Ferrero, E. Lopez, J. Ribas, and M. Rico-Secades, "Single-stage constant- wallage high-power factor electronic ballast with dimming capability," in 29th Annual IEEE Power Electronics Specialists Conference, 1998. PESC 98 Record, 1998, vol. 2, pp. 2021-2027.

D. S. L. Simonetti, J. Sebastian, F. S. dos Reis, and J. Uceda, "Design criteria for SEPIC and Cuk converters as power factor preregulators in discontinuous conduction mode," in Proceedings of the 1992 International Conference on Industrial Electronics, Control, Instrumentation, and Automation, 1992. Power Electronics and Motion Control, 1992, pp. 283-288 vol.1.

P. S. Almeida. "Conversor Integrado SEPIC-Buck-Boost Aplicado ao Acionamento de LEDs de Potência em Iluminação Pública". Master Electrical Engineering Degree, Universidade Federal de Juiz de Fora, Juiz de Fora, 2012.

Bridgelux RS Array Series. Product Datasheet. DS15. March, 2012.

A. Wilkins, J. Veitch, and B. Lehman, "LED lighting flicker and potential health concerns: IEEE standard PAR1789 update," in 2010 IEEE Energy Conversion Congress and Exposition (ECCE), 2010, pp. 171-178. https://doi.org/10.1109/ECCE.2010.5618050 DOI: https://doi.org/10.1109/ECCE.2010.5618050

V. C. Bender. "Metodologia de Projeto Eletrotérmico de LEDs Aplicada ao Desenvolvimento de Sistemas de Iluminação Pública". Master Electrical Engineering Degree Universidade Federal de Santa Maria, Santa Maria, 2012. DOI: https://doi.org/10.18618/REP.2013.2.9911000

R. A. Pinto. "Sistemas Eletrônicos Para Iluminação de Exteriores Empregando Diodos Emissores de Luz (LEDs) Alimentados Pela Rede Elétrica e por Baterias". Phd. Electrical Engineering Degree - Universidade Federal de Santa Maria, Santa Maria, 2012.