Type-2 Fuzzy Logic Controlled Adjustable Step-Size LMS Algorithm for DSTATCOM

Authors

  • Ganji Vivekanand
  • Dr K. Chandra sekhar
  • D Suresh

DOI:

https://doi.org/10.14419/ijet.v7i3.27.18487

Keywords:

type-2 fuzzy logic controller, DSTATCOM

Abstract

In this paper, voltage source converter is utilized as a distributed static compensator (DSTATCOM). The voltage source converter has advantages of lower capacitor size and reduced switching losses. The DSTATCOM is used to elimination of harmonics and reactive power of the nonlinear load. The reference currents of DSTATCOM estimated with type-2 fuzzy logic control step-size updated least mean square algorithm.

Conventionally, the proportional integral controller is used for control of dc link voltage and current of DSTATCOM. The proportional controller requires in detailed mathematical modeling of the overall system and it is tedious process.  To overcome aforementioned task interval type-2 fuzzy logic controller (IT2FLC) applied for a voltage source converter based DSTATCOM. The proposed IT2FLC is utilized to regulate the DC voltage as well as update the step size of the algorithm to improve the performances of the DSTATCOM. The overall system of DSTATCOM including T2FLC implemented in MATLAB/Simulink. The simulated response of DSTATCOM found to be improved and better than the conventional LMS algorithm controller.

 

 

References

[1] B. Singh, K. Al-Haddad and A. Chandra, "A review of active filters for power quality improvement," in IEEE Tran., on Ind. Electron., vol. 46, no. 5, pp. 960-971, Oct 1999.

[2] S. Buso, L. Malesani and P. Mattavelli, "Comparison of current control techniques for active filter applications," in IEEE Transactions on Industrial Electronics, vol. 45, no. 5, pp. 722-729, Oct 1998.

[3] Bhattacharya S., Banerjee and, Divan D. M., “Synchronous frameharmonic isolator using active series filter,†in Proc. Eur. Power Electron.Conf., , pp. 3030–3035, 1991.

[4] S. Saad, L. Zellouma, “FLC for 3-level shunt active filter recompensing harmonics and reactive power,†Electric Power Sys. Res., vol. 79, Is. 10, pp. 1337-1341, Oct. 2009.

[5] J. Li et al., "Three-level active neutral-point-clamped zero-current-transition converter for sustainable energy systems", IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3680-3693, Dec. 2011.

[6] Xiao Peng, Venayagamoorthy GK, Corzine KA, “Seven-level shunt active filter for high power drive systems,†IEEE Trans., Power Electron., vol. 24, no.1, pp. 6-13, 2009.

[7] Wenjin Dai, Yongtao Dai and Min Wu, “A new study for harmonic suppression and reactive power compensation,†Industrial Technology, in proc., IEEE ICIT 2008, vol., no., pp.1,6, 21-24 April 2008

[8] B. Singh, V. Verma, and J. Solanki, “NN -based selective compensation current quality problems in distribution system,†IEEE Trans. Ind. Electron., vol. 54, no. 1, pp. 53–60, Feb. 2007.

[9] Dhanavath Suresh, S.P. Singh, “design of single input FLC for shunt DSTATCOM,†IETE journal of research, vol.61, no.5, 2016.

[10] Karnik, N. N., Mendel, J. M., and Qilian, L., “Type-2 fuzzy logic systems,†IEEE Trans. Fuzzy Syst., Vol. 7, pp. 643–658,1999.

[11] Y. Jiao, S. Lu, F. C. Lee, "Switching performance optimization of a high-power high frequency 3-level active neutral point clamped phase leg building block", IEEE Trans. Power Electron., vol. 29, no. 7, pp. 3255-3266, Jul. 2014.

[12] Yun-Liang Wang, Ming Bao, “A Variable Step-Size LMS Algorithm of Harmonic Current Detection Based on Fuzzy Inference,†in proc. Of Computer and automation Engineering, vol. 2, pp.665-668, 2010.

View Full Article: