Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
권호 표지
DOI QR코드

DOI QR Code

Active Damping Method Using Grid-Side Current Feedback for Active Power Filters with LCL Filters

  • Tang, Shiying (Dept. of Electrical and Electronics Eng., Huazhong University of Science and Technology) ;
  • Peng, Li (Dept. of Electrical and Electronics Eng., Huazhong University of Science and Technology) ;
  • Kang, Yong (Dept. of Electrical and Electronics Eng., Huazhong University of Science and Technology)
  • Received : 2010.12.08
  • Published : 2011.05.20
Download PDF
⟨ Previous Next ⟩

Abstract

LCL filters installed at converter outputs offer a higher harmonic attenuation than L filters. However, as a three order resonant circuit, it is difficult to stabilize and has a risk of oscillating with the power grid. Therefore, careful design is required to damp LCL resonance. Compared to a passive damping method, an active damping method is a more attractive solution for this problem, since it avoids extra power losses. In this paper, the damping capabilities of capacitor current, capacitor voltage, and grid-side current feedback methods, are analyzed under the discrete-time state-space model. Theoretical analysis shows that the grid-side current feedback method is more suitable for use in active power filters, because it can damp LCL resonance more effectively than the other two methods when the ratio of the resonance and the control frequency is between 0.225 and 0.325. Furthermore, since there is no need for extra sensors for additional states measurements, this method provides a cost-efficient solution. To support the theoretical analysis, the proposed method is tested on a 7-kVA single-phase shunt active power filter.

Keywords

References

  1. M. Liserre, F. Blaabjerg, and S. Hansen, "Design and control of an LCL filter-based three-phase active rectifier," IEEE Trans. Ind. Appl., Vol. 41, No. 5, pp. 1284-1285, Sep./Oct. 2005.
  2. I. J. Gabe, V. F. Montagner, and H. Pinheiro, "Design and implementation of a robust current controller for VSI connected to the grid through an LCL filter," IEEE Trans. Power Electron., Vol. 24, No. 6, pp. 1444-1452, Jun. 2009. https://doi.org/10.1109/TPEL.2009.2016097
  3. O. Vodyakho and C. C. Mi, "Three-level inverter-based shunt active power filter in three-phase three-wire and four-wire systems," IEEE Trans. Power Electron., Vol. 24, No. 5, pp. 1350-1363, May 2009. https://doi.org/10.1109/TPEL.2009.2016663
  4. B. Bolsens, K. D. Brabandere, J. V. D. Keybus, J. Driesen, and R. Belmans, "Model-based generation of low distortion currents in gridcoupled PWM-inverters using an LCL output filter," IEEE Trans. Power Electron., Vol. 21, No. 4, pp. 1032-1040, Jul. 2006. https://doi.org/10.1109/TPEL.2006.876840
  5. D. E. Kim and D. C. Lee, "Feedback linearization control of gridinteractive PWM converters with LCL filters," Journal of Power Electronics, Vol. 9, No. 2, pp. 288-299, Mar. 2009.
  6. M. Routimo and H. Tuusa, "LCL type supply filter for active power filter-Comparison of an active and a passive method for resonance damping," in Proc. IEEE PESC, pp. 2939-2945, 2007.
  7. V. Blasko and V. Kaura, "A novel control to actively damp resonance in input LC filter of a three-phase voltage source converter," IEEE Trans. Ind. Appl., Vol. 33, No. 2, pp. 542-550, Mar./Apr. 1997. https://doi.org/10.1109/28.568021
  8. M. Liserre, A. Dell'Aquila, and F. Blaabjerg, "Stability improvement of an LCL-filter based three-phase active rectifier," in Proc. Power Electron. Spec. Conf., pp. 1195-1201, 2002.
  9. B. Bolsens, K. De Brabandere, J. Van den Keybus, J. Driesen, and R. Belmans, "Three-phase observer-based low distortion grid current controller using an LCL output filter," in Proc. IEEE Power Electron. Spec. Conf., pp. 1705-1711, 2005.
  10. S. Nuilers and B. Neammanee, "Control performance of active damp LCL filter of three phase PWM boost rectifier," in Proc. Electron. Info. Conf., pp. 259-263, 2010.
  11. S. Y. Yang, X. Zhang, C. W. Zhang, and Z. Xie, "Study on active damping methods for voltage source converter with LCL input filter," in Proc. Power Electron. Motion Contr. Conf., pp. 975-979, 2009.
  12. E. Twining and D. G. Holmes, "Grid current regulation of a three-phase voltage source inverter with an LCL input filter," IEEE Trans. Power Electron., Vol. 18, No. 3, pp. 888-895. May 2003.
  13. L. Mihalache, "A high performance DSP controller for three-phase PWM rectifiers with ultra low input current THD under unbalanced and distorted input voltage," in Conf. Rec. IEEE IAS Annu. Meeting, pp. 138-144, 2005.
  14. G. Zeng, R. Tonny, L. Ma, and T. Remus, "Design and control of LCLfilter with active damping for Active Power Filter," in Proc. StateInd. Electron. Conf., pp. 2557-2562, 2010.
  15. J. Dannehl, F. Fuchs, S. Hansen, and P. Thegersen, "Investigation of active damping approaches for pi-based current control of gridconnected pulse width modulation converters with LCL filters," IEEE Trans. Ind. Appl., Vol. 46, No. 4, pp. 1509-1517, Jul./Aug. 2010. https://doi.org/10.1109/TIA.2010.2049974
  16. J. Dannehl, C. Wessels, and F. W. Fuchs, "Voltage-oriented PI current control of grid-connected PWM rectifiers with LCL-filter," IEEE Trans. on Ind. Electron., Vol. 56, No.2, pp. 380-388, Feb. 2009. https://doi.org/10.1109/TIE.2008.2008774
  17. Y. Tang, P. C. Loh, P. Wang, F. H. Choo, and F. Gao, "Exploring inherent damping characteristic of LCL-filters for three-phase grid-connected voltage source inverters," in Proc. Energ. Conver. Congress Conf., pp. 312-319, 2010.
  18. F. A. Magueed and J. Svensson, "Control of VSC connected to the grid through LCL-filter to achieve balanced currents," in Conf. Rec. IEEE IAS Annu. Meeting, pp. 572-578, 2005.
  19. E. Wu and P. W. Lehn, "Digital current control of a voltage source converter with active damping of LCL resonance," IEEE Trans. Power Electron., Vol. 21, No. 5, pp. 1364-1373, Sep. 2006. https://doi.org/10.1109/TPEL.2006.880271
  20. B. Bolsens, K. De Brabandere, J. Van den Keybus, J. Driesen, and R. Belmans, "Three-phase observer-based low distortion grid current controller using an LCL output filter," in Proc. IEEE Power Electron. Spec. Conf., pp. 1705-1711, 2005.
  21. M. Malinowski and S. Bernet, "A simple voltage sensorless active damping scheme for three-phase PWM converters with an LCL filter," IEEE Trans. Ind. Electron., Vol. 55, No. 4, pp. 1876-1880, Apr. 2008. https://doi.org/10.1109/TIE.2008.917066
  22. C. Lascu, L. Asiminoaei, I. Boldea, and F. Blaabjerg, "Frequency response analysis of current controllers for selective harmonic compensation in active power filters," IEEE Trans. Ind. Electron., Vol. 56, No. 2, pp. 337-347, Feb. 2009.
  23. R. I. Bojoi, G. Griva, V. Bostan, M. Guerriero, F. Farina, and F. Profumo, "Current control strategy for power conditioners using sinusoidal signal integrators in synchronous reference frame," IEEE Trans. Power Electron., Vol. 20, No. 6, pp. 1402-1412, Nov. 2005.
  24. D. G. Holmes, T. A. Lipo, B. P. McGrath, and W. Y. Kong, "Optimized design of stationary frame three phase AC current regulators," IEEE Trans. Power Electron., Vol. 24, No. 11, pp. 2417-2426, Nov. 2009. https://doi.org/10.1109/TPEL.2009.2029548
  25. C. Lascu, L. Asiminoaei, I. Boldea, and F. Blaabjerg, "High performance current controller for selective harmonic compensation in active power filters," IEEE Trans. Power Electron., Vol. 22, No. 5, pp. 1826-1835, Sep. 2007. https://doi.org/10.1109/TPEL.2007.904060

Cited by

  1. Active Damping of LCL Filter for Three-phase PWM Inverter without Additional Hardware Sensors vol.18, pp.1, 2013, https://doi.org/10.6113/TKPE.2013.18.1.10
  2. A Capacitance Estimation of Film Capacitors in an LCL-Filter of Grid-Connected PWM Converters vol.13, pp.1, 2013, https://doi.org/10.6113/JPE.2013.13.1.94
  3. A Study on LLCL Filter to Reduce Harmonic Current of Grid Connected Power Inverter vol.19, pp.1, 2014, https://doi.org/10.6113/TKPE.2014.19.1.64
  4. A Novel Design and Optimization Method of an $LCL$ Filter for a Shunt Active Power Filter vol.61, pp.8, 2014, https://doi.org/10.1109/TIE.2013.2282592
  5. Topologies, generalized designs, passive and active damping methods of switching ripple filters for voltage source inverter: A comprehensive review vol.62, 2016, https://doi.org/10.1016/j.rser.2016.04.006
  6. Simplified Controller Design Method for Digitally Controlled LCL-Type PWM Converter with Multi-resonant Quasi-PR Controller and Capacitor-Current-Feedback Active Damping vol.14, pp.6, 2014, https://doi.org/10.6113/JPE.2014.14.6.1322