Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

A Hysteresis Current Controller for PV-Wind Hybrid Source Fed STATCOM System Using Cascaded Multilevel Inverters

  • Palanisamy, R. (Dept. of Electrical and Electronic Engineering, SRM University) ;
  • Vijayakumar, K. (Dept. of Electrical and Electronic Engineering, SRM University)
  • Received : 2017.06.30
  • Accepted : 2017.09.26
  • Published : 2018.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper elucidates a hysteresis current controller for enhancing the performance of static synchronous compensator (STATCOM) using cascaded H-bridge multilevel inverter. Due to the rising power demand and growing conventional generation costs a new alternative in renewable energy source is gaining popularity and recognition. A five level single phase cascaded multilevel inverter with two separated dc sources, which is energized by photovoltaic - wind hybrid energy source. The voltages across the each dc source is balanced and standardized by the proposed hysteresis current controller. The performance of STATCOM is analyzed by connecting with grid connected system, under the steady state & dynamic state. To reduce the Total Harmonic Distortion (THD) and to improve the output voltage, closed loop hysteresis current control is achieved using PLL and PI controller. The performance of the proposed system is scrutinized through various simulation results using matlab/simulink and hardware results are also verified with simulation results.

Keywords

E1EEFQ_2018_v13n1_270_f0001.png 이미지

Fig. 1. Flowchart for incremental conductance - MPPTalgorithm

E1EEFQ_2018_v13n1_270_f0002.png 이미지

Fig. 2. PV panel characteristics showing MPP usingIncremental Conductance method

E1EEFQ_2018_v13n1_270_f0003.png 이미지

Fig. 3. Single phase five level cascaded H-bridge inverter

E1EEFQ_2018_v13n1_270_f0004.png 이미지

Fig. 4. Block diagram of STATCOM with proposed control scheme

E1EEFQ_2018_v13n1_270_f0005.png 이미지

Fig. 5. HCC system (a) schematic hysteresis vectordiagram (b) Error current calculation system

E1EEFQ_2018_v13n1_270_f0006.png 이미지

Fig. 6. block diagram for closed loop operation of proposed system

E1EEFQ_2018_v13n1_270_f0007.png 이미지

Fig. 7. HCC for cascaded multilevel inverter

E1EEFQ_2018_v13n1_270_f0008.png 이미지

Fig. 8. PV array ？ output current and voltage

E1EEFQ_2018_v13n1_270_f0009.png 이미지

Fig. 9. Rectified dc voltage using 3-phase rectifier

E1EEFQ_2018_v13n1_270_f0010.png 이미지

Fig.10. Wind energy - PMSG output voltage

E1EEFQ_2018_v13n1_270_f0011.png 이미지

Fig. 11. Single phase H-bridge inverter voltage withHysteresis Band variation: (a) HB=0.1, (b) HB=0.4 (c)

E1EEFQ_2018_v13n1_270_f0012.png 이미지

Fig. 12. Switching pulses for leg 1 & 2 of H-bridge inverter

E1EEFQ_2018_v13n1_270_f0013.png 이미지

Fig. 13. Split inductor current waveform Id & Iq

E1EEFQ_2018_v13n1_270_f0014.png 이미지

Fig. 14. Grid current / Voltage synchronization: (a) SPWM(b) Hysteresis current control

E1EEFQ_2018_v13n1_270_f0015.png 이미지

Fig. 15. THD analysis: (a) output voltage (b) output current

E1EEFQ_2018_v13n1_270_f0016.png 이미지

Fig. 16. H-bridge inverter output voltage at 0.95 (HysteresisBand) and THD analysis

E1EEFQ_2018_v13n1_270_f0017.png 이미지

Fig. 17. Split inductor based output voltage and THDanalysis

E1EEFQ_2018_v13n1_270_f0018.png 이미지

Fig. 18. Output current waveform of inverter with splitinductor

E1EEFQ_2018_v13n1_270_f0019.png 이미지

Fig. 19. Experimental setup of proposed system

E1EEFQ_2018_v13n1_270_f0020.png 이미지

Fig. 20. Comparison of output voltage for various invertertopologies

Table 1. THD comparison for various inverter topologies with HCC algorithm at 0.95 (hysteresis band)

E1EEFQ_2018_v13n1_270_t0001.png 이미지

References

  1. F. Z. Peng, J. W. McKeever, and J. VanCoevering, "A multilevel voltage-source inverter with separate DC sources for static var generation," IEEE Trans. Ind. Appl., vol. 32, no. 5, pp. 1130-1138, Sep./Oct. 1996. https://doi.org/10.1109/28.536875
  2. R. H. Baker and L. H. Bannister, "Electric power converter," U.S. Patent, 3 867 643, Feb. 1975.
  3. O. Alonso, P. Sanchis, E. Gubia and L. Marroyo, "Cascaded H-bridge multilevel converter for grid connected photovoltaic generators with independent maximum power point tracking of each solar array," In: Proc. IEEE Power Electronics Specialist Conf., pp. 731-735, Jun. 2012.
  4. A. Rolan, A. Luna, G. Vazquez and D. Azevedo, "Modeling of a variable speed wind turbine with a permanent magnet synchronous generator," in Proc. IEEE International Symposium on Industrial Electronics, pp. 734-739, 2009.
  5. A. Nabae, I. Takahashi and H. Akagi, "A new neutralpoint clamped PWM inverter," in Proceeding of IAS, pp. 761-766, 1980.
  6. M. Lafoz, I. J. Iglesias, C. Veganzones and M. Visiers, "A novel double hysteresis-band current control for a three-level voltage source inverter," Proc. IEEE PESC Conf., vol. 1, pp. 21-26, 2012.
  7. K.C.A. De Souza, M.R. De Castro, and M.R Antunes, "A DC/ AC converter for single-phase grid-connected photovoltaic systems," In: IECON Proceedin (Industrial Electronics Conference), vol. 4, pp. 3268- 3273, 2012.
  8. J. Rodriguez, J. Lai and F. Z. Peng, "Multilevel inverters: a survey of topologies, controls, and applications," IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 724-738, Aug. 2002. https://doi.org/10.1109/TIE.2002.801052
  9. M. Calais and V. G. Agelidis, "Multilevel converters for single-phase grid connected photovoltaic systems - An overview," in Proc. IEEE Int. Symp. Ind. Electron., pp. 224-229, 2004.
  10. Sung Geun Song, Feel Soon Kang and Sung-Jun Park, "Cascaded multilevel inverter employing three phase transformers and single dc input," IEEE Trans. Ind. Electron., vol. 56, no. 6, pp. 2005-2014, June 2009. https://doi.org/10.1109/TIE.2009.2013846
  11. H. F. Xiao and S. J. Xie, "Leakage current analytical model and application in single-phase transformerless photovoltaic grid-connected inverter," IEEE Trans. Electromagn. Compat., vol. 52, no. 4, pp. 902-913, Nov. 2012. https://doi.org/10.1109/TEMC.2010.2064169
  12. Anup Kumar Panda. and Yellasiri Suresh, Research on cascade multilevel inverter with single DC source by using three-phase transformers. Int. J. Electr. Power & Energy Syst., vol.40, no. 5), pp. 9-20, 2012. https://doi.org/10.1016/j.ijepes.2011.12.012
  13. H. Yu, J. Pan, A. Xiang, "A multi-function gridconnected PV system with reactive power compensation for the grid," Sol. Energy vol. 79, pp. 101- 106, Aug. 2009.
  14. M. Basu, S. P. Das and G. K. Dubey, "Parallel converter scheme for high-power active power filters," Proc. IEE Proceeding − Electric Power Applications, vol. 151, no. 4, pp. 460-466, 2012.
  15. S. Yogendra Reddy, Daka Seshi Reddy, G. Kesava Rao. Optimal Siting and Sizing of Solar Power Sources in Interconnection Grid System. Indian Journal of Science and Technology. vol. 9, no. 12, Mar. 2016.
  16. H. Sugimoto and H. Dong. A new scheme for maximum photovoltaic power tracking control. Power Conversion Conference Proceedings of IEEE., vol. 2, pp. 691-696, Feb. 2007.
  17. R. Palanisamy, K. Vijayakumar, A.U Mutawakkil, "Simulation of maximum power point tracking using fuzzy logic control technique," Indian Journal of Science and Technology., vol. 9, no. 9, p. 60075, Sep. 2016.
  18. O. Fatih Kececioglu, Hakan Acikgoz, Ceyhun Yildiz, Ahmet Gani and Mustafa Sekkeli, "Power Quality Improvement Using Hybrid Passive Filter Configuration for Wind Energy Systems," Journal of Electrical. Engg & Technology, vol. 12, no. 1, 207- 216, 2017. https://doi.org/10.5370/JEET.2017.12.1.207
  19. R. S. Bajpai, M. Goyal and R. Gupta, "Modeling and control of variable speed wind turbine using laboratory simulator," Journal of Renewable and Sustainable Energy, vol. 7, 2015.
  20. A. Urtasun, P. Sanchis, I. S. Martin, J. Lopez and L. Marroyo, "Modeling of small wind turbines based on PMSG with diode bridge for sensorless maximum power tracking," Renewable Energy, vol. 55, pp. 138-149, 2013. https://doi.org/10.1016/j.renene.2012.12.035
  21. M.M. Prats, 1.1. Leh, R. Portillo, J.M. Carrasco and L.G. Franquelo, "A novel space-vector algorithm for multilevel converters based on geometrical considerations using a new sequence control technique," In Circuits, Systems and Computers. International Journal, 2008.