The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Soft Switching DC-DC Converter for AC Module Type PV Module Integrated Converter

AC 모듈형 태양광 모듈 집적형 컨버터를 위한 소프트 스위칭 DC-DC 컨버터

  • Youn, Sun-Jae (Samsung Electro-mechanics Co., Ltd.) ;
  • Kim, Young-Ho (School of Information and Communication Engineering, Sungkyunkwan University) ;
  • Jung, Yong-Chae (Dept of Electronic Engineering, Namseoul University) ;
  • Won, Chung-Yuen (School of Information and Communication Engineering, Sungkyunkwan University)
  • Received : 2012.11.09
  • Accepted : 2013.02.12
  • Published : 2013.06.20
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Abstract

In this paper, a soft switching DC-DC converter for AC module type photovoltaic (PV) module integrated converter is proposed. A push-pull converter is suitable for a low voltage PV AC module system because the step-up ratio of a high frequency transformer is high and the number of primary side switches is relatively small. However, the conventional push-pull converters do not have high efficiency because of high switching losses by hard switching and transformer losses (copper and iron losses) by high turns-ratio of the transformer. In the proposed converter, primary side switches are turned on at zero voltage switching (ZCS) condition and turned off at zero current switching (ZVS) condition through parallel resonance between secondary leakage inductance of the transformer and a resonant capacitor. Therefore the proposed push-pull converter decreases the switching loss using soft switching of the primary switches. Also, the turns-ratio of the transformer can be reduced by half using a voltage-doubler of secondary side. The theoretical analysis of the proposed converter is verified by simulation and experimental results.

Keywords

References

  1. Quan Li, Peter Wolfs, "A Review of the Single Phase Photovoltaic Module Integrated Converter Topologies With Three Different DC link Configurations," Power Electronics, IEEE Transactions on, Vol. 23, No. 3, pp. 1320-1333, May 2008. https://doi.org/10.1109/TPEL.2008.920883
  2. Singh, B., Vyas, A.L., Chandra, A., Kamal-Al-Haddad, "Analysis and design of isolated solar-PV energy generating system," Industry Applications Society Annual Meeting (IAS), pp. 1-6, 2011.
  3. D. C. Martins, R. Demonti, A. S. Andrade, O. H. Gonalves, "Analysis of Utility Interactive Photovoltaic Generation System using a Single Power Static Inverter," Asian J. Energy Environment, Vol. 5, No. 2, pp. 115-137, 2004.
  4. Young Jin Lee, "Design and Efficiency Improvement of Power Conditioning System for Fuel Cell," 2010.
  5. Ivo Barbi, Roger Gules, "Isolated DC-DC Converters With High-Output Voltage for TWTA Telecommunication Satellite Applications," Power Electronics, IEEE Transactions on, Vol. 18, No. 4, pp. 975-984, July 2003. https://doi.org/10.1109/TPEL.2003.813762
  6. Chan Ki Park, "Power Conversion System for 1kW Residential Fuel Cell Generation," 2007.
  7. Ryan, M.J., Brumsickle, W.E., Divan, D.M., Lorenz, R.D., "A new ZVS LCL-resonant push-pull DC-DC converter topology," Industry Applications Conference(IAS) , Vol. 2, pp. 1673-1680, 1997.
  8. Chu C.-L., Li C.-H., "Analysis and design of a current-fed zero-voltage-switching and zero-currentswitching CL-resonant push-pull dc-dc converter," Power Electronics, IET, Vol. 2, pp. 456-465, 2009. https://doi.org/10.1049/iet-pel.2008.0157
  9. Nome F.J., Barbi I., "A ZVS clamping modecurrent- fed push-pull DC-DC converter," Industrial Electronics, ISIE '98, IEEE International Symposium on, Vol. 2, pp. 617-621, July 1998.
  10. De Aragao Filho, W.C.P., Barbi I., "A Comparison Between Two Current- Fed Push-Pull DC-DC Converter-Analysis Design and Experimentation," Telecommunications Energy Conference, INTELEC '96, pp. 313-320, 1996.
  11. E.-H. Kim B.-H. Kwon, "High step-up resonant push-pull converter with high efficiency," Power Electronics, IET, Vol. 2, pp. 79-89, 2009. https://doi.org/10.1049/iet-pel:20070140
  12. Lucas V. Hartmann, Mauricio B. R. Correa and Antonio M. N. Lima, "A simple and effective control strategy for improved operation of a current-fed push-pull converter," Energy Conversion Congress and Exposition, IEEE, pp. 1098-1103, Sept. 2010.
  13. Rabello A.L., Marcio C.A., Sousa G.C.D., Vieira J.L.F., "A Fully Protected Push-Pull Current-Fed DC-DC Converter," Industrial Electronics, Control and Instrumentation, IECON 97, Vol. 2, pp. 587-592, 1997.
  14. Domingo A. Ruiz-Caballero, Ivo Barbi, "A new flyback-current-fed push-pull DC-DC converter," Power Electronics, IEEE Transactions on, Vol. 14, pp. 1056-1064, Nov. 1999.