DOI QR코드

DOI QR Code

Design of LCL Filter through Inductor Optimization Method in Grid-Connected Inverter

계통연계 인버터의 인덕터 최적화 기법을 통한 LCL 필터 설계

  • Jang, Jae-Ha (Dept. of Electrical and Information Engineering, Seoul National University of Science and Technology) ;
  • Kim, Kyeong-Hwa (Dept. of Electrical and Information Engineering, Seoul National University of Science and Technology)
  • 장재하 (서울과학기술대학교 전기정보공학과) ;
  • 김경화 (서울과학기술대학교 전기정보공학과)
  • Received : 2014.08.13
  • Accepted : 2014.09.11
  • Published : 2014.11.28

Abstract

A grid-connected inverter used for renewable energy resources produces harmonic components in the switching frequency. To effectively reduce switching harmonic components, several types of filter are generally used in the output stage of the grid-connected inverter. Many research works on LCL filter design have been done to maintain the performance with low cost. However, it is not easy to make the filter design be economical and optimal due to the varying characteristic of magnetic core and redundancy design by experience. In this paper, a design method for a LCL filter is presented through the inductor optimization scheme in view of the size and cost when the inductor is manufactured using the magnetic core. The effectiveness is verified through tests using a 3kW grid-connected inverter by simulations and experiments.

Keywords

References

  1. H. B. Choi, K. C. Kim, and Y. R. Hwang, "A study on the power quality of the grid connected photovoltaic power system," Journal of the KIIEE, vol. 25, no. 8, pp. 88-98, 2011. https://doi.org/10.5207/JIEIE.2011.25.8.088
  2. H. R. Karshenas and H. Saghafi, "Basic criteria in designing LCL filters for grid connected converters," Industrial Electronics, IEEE International Symposium on. pp. 1996-2000, 2006.
  3. Y. Lang, D. Xu, S. R. Hadianamrei, and H. Ma "A novel design method of LCL type utility interface for three-phase voltage source rectifier," IEEE 36th Power Electronics Specialists Conference, pp. 313-317, 2005.
  4. T. C. Wang, Z. Ye, G. Sinha, and X. Yuan, "Output filter design for a grid-interconnected three-phase inverter," IEEE 34th Annual Power Electronics Specialist Conference, pp. 779-784, 2003.
  5. M. T. Bina and E. Pashajavid, "An efficient procedure to design passive LCL filters for active power filters," Electric Power Systems Research, vol. 79, no. 4, pp. 888-895, 2003.
  6. M. Liserre, F. Blaabjerg, and S. Hansen, "Design and control of an LCL-filter-based three-phase active rectifier." Industry Applications Conference, pp. 299-307, 2001.
  7. E. Twining and D. G. Holmes, "Grid current regulation of a three-phase voltage source inverter with an LCL input filter", IEEE Transactions on Power Electronics, vol. 18, no. 3, pp. 888-895, 2003.
  8. J. H. Park, M. H. Chi, H. G. Kim, T. W. Chun and E. C. Nho, "LCL filter design for grid-connected PCS using total harmonic distortion and ripple attenuation factor," The Transactions of the Korean Institute of Power Electronics, vol. 15, no. 3, pp. 235-243, 2010. https://doi.org/10.6113/TKPE.2010.15.3.235
  9. J. S. Noh, J. Ho. Choi, "Design of voltage source PWM converter with AC input LCL filter," The Transactions of the Korean Institute of Power Electronics, vol. 7, no. 5, pp. 490-498, 2002.
  10. S. E. Cho, "Commercial technology of non consumption of electrical power for elevator and escalator using photovoltaic generation and regeneration," SEOUL Final Report Number. PA09741, 2011.8.26
  11. Colonel Wm. T. McLyman, "Transformer and iInductor design handbook," Third Edition, CRC Press, 2004.
  12. J. H. Yoo and T. U. Jung, "A study on core shape optimization to improve the efficiency of high frequency transformer for inverter," Journal of the KIIEE, vol. 28, no. 4, pp. 29-35, 2014. https://doi.org/10.5207/JIEIE.2014.28.4.029