Journal of Power Electronics

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

DOI QR Code

Grid-friendly Characteristics Analysis and Implementation of a Single-phase Voltage-controlled Inverter

  • Zhang, Shuaitao (College of Electrical Engineering, Shanghai University of Electric Power) ;
  • Zhao, Jinbin (College of Electrical Engineering, Shanghai University of Electric Power) ;
  • Chen, Yang (College of Electrical Engineering, Shanghai University of Electric Power) ;
  • He, Chaojie (College of Electrical Engineering, Shanghai University of Electric Power)
  • Received : 2016.08.08
  • Accepted : 2017.06.15
  • Published : 2017.09.20
Download PDF
⟨ Previous Next ⟩

Abstract

Inverters are widely used in distributed power generation and other applications. However, their lack of inertia and variable impedance may cause system instability and power transfer inaccuracy. This paper proposes a control scheme for a single phase voltage-controlled inverter with some grid-friendly characteristics. The proposed control algorithm enables the inverter to function as a voltage source with an inner output impedance in both the islanded and grid-connected modes. Virtual inertia and rotor equations are embedded in the PLL part. Thus, the frequency stability can remain. The inner output impedance can be adjusted freely, which helps to accurately decouple and transmit the output active and reactive power. The proposed inverter operates like a traditional synchronous generator. Simulations and experiments are designed and carried out to verify the proposed control strategy.

Keywords

References

  1. D. E. Olivares, A. Mehrizi-Sani, A. H. Etemadi, C. A. Canizares, R. Iravani, M. Kazerani, A. H. Hajimiragha, O. Gomis-Bellmunt, M. Saeedifard, R. Palma-Behnke, G. A. Jimenez-Estevez, and N. D. Hatziargyriou, "Trends in microgrid control," IEEE Trans. Smart Grid, Vol. 5, No. 4, pp. 1905-1919, Apr. 2014. https://doi.org/10.1109/TSG.2013.2295514
  2. J. M. Guerrero, F. Blaabjerg, T. Zhelev, K. Hemmes, E. Monmasson,S. Jemei, M. P. Comech, R. Granadino, and J. I. Frau, "Distributed generation: Toward a new energy paradigm," IEEE Mag. Ind. Electron., Vol. 4, No. 1, pp. 52-64, Mar. 2010.
  3. X. Q. Li, X. J. Wu, Y. W. Geng, and Q. Zhang, "Stability analysis of grid-connected inverters with an LCL filter considering grid impedance," Journal of Power Electronics, Vol. 13, No. 5, pp. 896-908, Sep. 2013. https://doi.org/10.6113/JPE.2013.13.5.896
  4. S. Rakibuzzaman, M. Nadarajah, S. Arthit, and K. Y. Lee. "Impact of large-scale PV penetration on power system oscillatory stability." in Proc. PESG, pp. 1-7, 2010.
  5. J. Rocabert, A. Luna, F. Blaabjerg, and P. Rodriguez, "Control of power converters in AC microgrids." IEEE Trans. Power Electronics, Vol. 27, No. 11 pp. 4734-4749, Nov. 2012. https://doi.org/10.1109/TPEL.2012.2199334
  6. S. Riverso, F. Sarzo and G. Ferrari-Trecate, "Plug-and-play voltage and frequency control of islanded microgrids with meshed topology." IEEE Trans. Smart Grid, Vol. 6, No. 3, pp. 1176-1184, May 2015. https://doi.org/10.1109/TSG.2014.2381093
  7. S. Adhikari and F. Li, "Coordinated Vf and PQ control of solar photovoltaic generators with MPPT and battery storage in microgrids." IEEE Trans. Smart Grid, Vol. 5, No. 3, pp 1270-1281, Mar. 2014. https://doi.org/10.1109/TSG.2014.2301157
  8. G. Buticchi, M. Liserre, D. Barater, C. Concari, A. Soldati, and G. Franceschini, "Frequency-based control of a micro-grid with multiple renewable energy sources." in Proc. ECCE, pp. 5273-5280, 2014.
  9. T. B. Lazzarin, G. A. T. Bauer, and I. Barbi, "A control strategy for parallel operation of single-phase voltage source inverters: analysis, design and experimental results," IEEE Trans. Ind. Electron., Vol. 60, No. 6, pp. 2194-2204, Jul. 2013. https://doi.org/10.1109/TIE.2012.2193856
  10. J. C. Vasquez, J. M. Guerrero, M. Savaghebi, J. Eloy-Garcia, and R. Teodorescu, "Modeling, analysis, and design of stationary-reference-frame droop-controlled parallel three-phase voltage source inverters," IEEE Trans. Ind. Electron., Vol. 60, No. 4, pp. 1271-1280, Apr. 2013 https://doi.org/10.1109/TIE.2012.2194951
  11. J. H. Im, S. H. Song, and S. Kang. "Analysis and compensation of PCC voltage variations caused by wind turbine power fluctuations," Journal of Power Electronics, Vol. 13, No. 5, pp. 854-860,Oct. 2013. https://doi.org/10.6113/JPE.2013.13.5.854
  12. J. M. Guerrero, J. Matas, L. Garcia de Vicuna, M. Castilla, and J. Miret, "Decentralized control for parallel operation of distributed generation inverters using resistive output impedance," IEEE Trans. Ind. Electron., Vol. 54, No. 2, pp. 994-1004, Feb. 2007. https://doi.org/10.1109/TIE.2007.892621
  13. G. Fang and M. R. Iravani. "A control strategy for a distributed generation unit in grid-connected and autonomous modes of operation." IEEE Trans. Power Del., Vol. 23, No. 2, pp. 850-859, Feb. 2008. https://doi.org/10.1109/TPWRD.2007.915950
  14. Q. C. Zhong and G. Weiss, "Synchronverters: Inverters that mimic synchronous generators." IEEE Trans. Ind. Electron., Vol. 58, No. 4, pp. 1259-1267, Apr. 2011. https://doi.org/10.1109/TIE.2010.2048839
  15. J. F. Hu, J. G. Zhu, D. G. Dorrell, and J. M. Guerrero. "Virtual flux droop method - A new control strategy of inverters in microgrids." IEEE Trans. Power Electron., Vol. 29, No. 9, pp. 4704-4711, Sep. 2014. https://doi.org/10.1109/TPEL.2013.2286159
  16. J. W. He and Y. W. Li, "Analysis, design, and implementation of virtual impedance for power electronics interfaced distributed generation," IEEE Trans. Ind. Appl., Vol. 47, No. 6, pp. 2525-2538, Nov. 2011. https://doi.org/10.1109/TIA.2011.2168592
  17. J. W. He and Y. W. Li. "Generalized closed-loop control schemes with embedded virtual impedances for voltage source converters with LC or LCL filters." IEEE Trans. Power Electronics, Vol. 27, No. 4, pp. 1850-1861, Apr. 2012. https://doi.org/10.1109/TPEL.2011.2168427
  18. Y. W. Li and C. N. Kao. "An accurate power control strategy for power-electronics-interfaced distributed generation units operating in a low-voltage multibus microgrid," IEEE Trans. Power Electron., Vol. 24, No. 12, pp. 2977-2988, Dec. 2009. https://doi.org/10.1109/TPEL.2009.2022828
  19. J. B. Zhao, U. Shuuichi, and O. Masaaki, "Grid-connected inverter with inner output impedance and governor-free characteristics." in Proc. ECCE, 2010, pp. 586-593.
  20. Y. Chen, J. B. Zhao, K. Q. Qu, and F. Li, "PQ control of micro grid inverter with axial voltage regulators," Journal of Power Electronics, Vol. 15, No. 6, pp.1601-1608, Nov. 2015. https://doi.org/10.6113/JPE.2015.15.6.1601