AIMS Energy, 2018, 6(5): 695-709. doi: 10.3934/energy.2018.5.695

Research article

Export file:


  • RIS(for EndNote,Reference Manager,ProCite)
  • BibTex
  • Text


  • Citation Only
  • Citation and Abstract

Fuzzy PI controller for bidirectional power flow applications with harmonic current mitigation under unbalanced scenario

1 Research Scholar, Department of Electrical & Electronics Engineering, National Institute of Technology Karnataka (NITK), Surathkal, P.O. 575025, India
2 Associate Professor, Department of Electrical & Electronics Engineering, National Institute of Technology Karnataka (NITK), Surathkal, P.O. 575025, India

The depletion of fossil fuels and environmental concern forces the extraction of power from low carbon fuels causes generation problem due to intermittent solar-wind renewable energy sources and power electronic applications. Furthermore, the significant amount of non-linear loads in the system causes power quality problems. Nowadays, the more and more DC loads like LED lights to save energy consumption are connected to the AC distribution system. These DC loads are connected at DC grid side in order to avoid the extra AC/DC power conversion loss. In this paper, the proposed d-q reference current method applied for shunt active power filter based 3-phase 4-leg bidirectional interfacing converter with fuzzy PI controller to achieve the real power transfer between DC grid side and AC grid side with current harmonics compensation at common connecting point simultaneously under balanced and unbalanced distorted grid and non-linear load conditions. The hysteresis current control comparator without PLL is used to compare actual grid current with reference filter current and generate the switching pulses for driving the bidirectional interfacing converter. The DC grid shunt connected intermittent hybrid solar-wind energy sources are integrating with AC grid utility through bidirectional interfacing converter has been into consideration for simulation studies. The MATLAB/SIMULINK tool is used to yield the improved grid current THD with fuzzy logic controller over PI controller.
  Article Metrics


1. Arul PG, Ramachandaramurthy VK, Rajkumar RK (2015) Control strategies for a hybrid renewable energy system: A review. Renew Sust Energ Rev 42: 597–608.    

2. Ullah W, Mekhilef M, Seyedmahmoudian M, et al. (2017) Active power filter (APF) for mitigation of power quality issues in grid integration of wind and photovoltaic energy conversion system. Renew Sust Energ Rev 70: 635–655.    

3. Özerdem ÖC, Khadem SK, Biricik S, et al. (2014) Real-time control of shunt active power filter under distorted grid voltage and unbalanced load condition using self-tuning filter. IET Power Electron 7: 1895–1905.    

4. Pouresmaeil E, Akorede MF, Montesinos-Miracle D, et al. (2014) Hysteresis current control technique of VSI for compensation of grid-connected unbalanced loads. Electr Eng 96: 27–35.    

5. Acuna P, Moran L, Rivera M, et al. (2014) Improved active power filter performance for renewable power generation systems. IEEE T Power Electron 29: 687–694.    

6. Mesbahi N, Ouari A, Abdeslam DO, et al. (2014) Direct power control of shunt active filter using high selectivity filter (HSF) under distorted or unbalanced conditions. Electr Power Syst Res 108: 113–123.    

7. Trinh QN, Lee HH (2014) An enhanced grid current compensator for grid-connected distributed generation under nonlinear loads and grid voltage distortions. IEEE T Ind Electron 61: 6528–6537.    

8. Kanjiya P, Khadkikar V, Zeineldin HH (2015) Optimal control of shunt active power filter to meet IEEE Std. 519 current harmonic constraints under nonideal supply condition. IEEE T Ind Electron 62: 724–734.

9. Mehrasa M, Pouresmaeil E, Zabihi S, et al. (2016) A control strategy for the stable operation of shunt active power filters in power grids. Energy 96: 325–334.    

10. Kasa S, Ramanathan P, Ramasamy S, et al. (2016) Effective grid interfaced renewable sources with power quality improvement using dynamic active power filter. Int J Electr Power Energy Syst 82: 150–160.    

11. Villalva MG, Gazoli JR, Filho ER, et al. (2009) Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays. IEEE T Power Electron 24: 1198–1208.    

12. Rakotomananandro FF (2011) Study of Photovoltaic System. Master of Science. The Ohio State University.

13. Jayalakshmi NS, Gaonkar DN, Kumar KSK (2012) Dynamic modeling and performance analysis of grid connected PMSG based variable speed wind turbines with simple power conditioning system. IEEE Int Conf Power Electron 2013: 1–5.

14. Ouchen S, Betka A, Abdeddaim S, et al. (2016) Fuzzy-predictive direct power control implementation of a grid connected photovoltaic system, associated with an active power filter. Energy Convers Manag 122: 515–525.    

© 2018 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (

Download full text in PDF

Export Citation

Article outline

Show full outline
Copyright © AIMS Press All Rights Reserved