Fuzzy-PI Controller based Modulated Multilevel UPQC under Faulty Conditions

Author(s): Veera Nagi Reddy.V*, D.V. Ashok Kumar, Venkata R. Kota

Journal Name: Recent Advances in Electrical & Electronic Engineering
Formerly Recent Patents on Electrical & Electronic Engineering

Volume 13 , Issue 7 , 2020

Become EABM
Become Reviewer
Call for Editor

Graphical Abstract:


Background: This paper presents voltage and current quality improvement in high/medium electrical distribution system using modulated multilevel unified power quality conditioner (MM-UPQC). Nowadays, power quality is one of the major issues due to the increase in usage of more non-linear loads in agricultural, commercial, industrial sectors. The industrial loads produce large amount of harmonics and power imbalances, which cause various power quality related issues like poor power factor, voltage sag, voltage swell, voltage interruption etc.

Methods: The prime objective of this work is to design fuzzy-PI based controller based modulated multilevel UPQC for mitigation of issues related to power quality under unsymmetrical fault conditions such as LG fault and LLG fault.

Results: This paper uses Instantaneous Reactive Power Theory (IRP) for phase angle adjustment with PI-fuzzy controller scheme to generate accurate reference signal for shunt and series controller of MM-UPQC. The detailed comparative analysis results of simultaneous voltage sag, swell, harmonics compensation and unsymmetrical faults mitigation are presented alongwith the MATLAB/SIMULINK software.

Conclusion: Total harmonic distortion analysis is tabulated with PI and fuzzy-PI controller based MM-UPQC for different operating conditions in 4.16 KV distribution system.

Keywords: Modulated multi-level UPQC, high/medium distribution system, IRP theory, voltage sag, voltage swell, harmonics compensation, fuzzy-PI controller, unsymmetrical faults.

J. Faiz, G.H. Shahgholian, and M. Torabiyan, "Design and simulation of UPFC for enhancement of power quality in transmission lines", In 2010 International Conference on Power System Technology, 2010
B. Han, "Combined operation of unified power-quality conditioner with distributed generation", IEEE Trans. Power Deliv., vol. 21, no. 1, pp. 330-338, 2005.
P. Roncero-Sánchez, and E. Acha, "Harmonic and imbalance voltage mitigation in smart grids: A DSTATCOM based solution", IEEE EUROCON 2015-International Conference on Computer as a Tool (EUROCON), 2015,
V. Khadkikar, and A. Chandra, "A new control philosophy for a unified power quality conditioner (UPQC) to coordinate load-reactive power demand between shunt and series inverters", IEEE Trans. Power Deliv., vol. 23, no. 4, pp. 2522-2534, 2008.
M. Basu, S.P. Das, and G.K. Dubey, "Comparative evaluation of two models of UPQC for suitable interface to enhance power quality", Electr. Power Syst. Res., vol. 77, no. 7, pp. 821-830, 2007.
Yu. Chen, "Passivity-based control of cascaded multilevel converter based D-STATCOM integrated with distribution transformer", Electr. Power Syst. Res., vol. 154, pp. 1-12, 2018.
H. Akagi, Y. Kanazawa, and A. Nabae, "Instantaneous reactive power compensators comprising switching devices without energy storage components", IEEE Trans. Ind. Appl., vol. 3, pp. 625-630, 1984.
Z. Wang, "A series active power filter adopting hybrid control approach", IEEE Trans. Power Electron., vol. 16, no. 3, pp. 301-310, 2001.
M. Labeeb, and B.S. Lathika, “Design and analysis of DSTATCOM using SRFT and ANN-fuzzy based control for power quality improvement”, In: 2011 IEEE Recent Advances in Intelligent Computational Systems. IEEE, 2011,
S. Khokhar, "A new optimal feature selection algorithm for classification of power quality disturbances using discrete wavelet transform and probabilistic neural network", Measurement, vol. 95, pp. 246-259, 2017.
S.S. Gururajapathy, H. Mokhlis, and H.A. Illias, "Fault location and detection techniques in power distribution systems with distributed generation", Renew. Sustain. Energy Rev., vol. 74, pp. 949-958, 2017.
A.K. Panda, and N. Patnaik, "Management of reactive power sharing & power quality improvement with SRF-PAC based UPQC under unbalanced source voltage condition", Int. J. Electr. Power Energy Syst., vol. 84, pp. 182-194, 2017.
Y.-J. Kim, "Development and analysis of a sensitivity matrix of a three-phase voltage unbalance factor", IEEE Trans. Power Syst., vol. 33, no. 3, pp. 3192-3195, 2018,
Y. Hoseynpoor, T.P. Ashraf, and S. Sajedi, "Economic assessment of unified power quality controller operation in joint and separated modes with DG units", Res. J. Appl. Sci. Eng. Technol., vol. 3, no. 9, pp. 963-967, 2011.
S. Shen, H. Zheng, Y. Lin, and W. Zhao, "UPQC harmonic detection algorithm based on improved P-Q Theory and design of low-pass filter", In 2018 Chinese Control And Decision Conference (CCDC) Shenyang, China, 2018pp. 5156-5160
X. Xiao, "A 10kV 4MVA unified power quality conditioner based on modular multilevel inverter", In 2013 International Electric Machines Drives Conference . IEEE, 2013
R. Marquardt, "Modular multilevel converter: An universal concept for HVDC-networks and extended DC-bus-applications", ”, In: The 2010 International Power Electronics Conference, Asia-ECCE, 2010.",

Rights & PermissionsPrintExport Cite as

Article Details

Year: 2020
Page: [1010 - 1021]
Pages: 12
DOI: 10.2174/2352096513666200121094609
Price: $25

Article Metrics

PDF: 13