Power Quality Enhancement of Grid-Connected Renewable Systems Using a Matrix-Pencil-Based Active Power Filter

Khaled Chahine (), Mohamad Tarnini, Nazih Moubayed and Abdallah El Ghaly
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Khaled Chahine: College of Engineering and Technology, American University of the Middle East, Kuwait
Mohamad Tarnini: ECE Department, Faculty of Engineering, Beirut Arab University, Beirut 11-5020, Lebanon
Nazih Moubayed: LaRGES, CRSI, Faculty of Engineering, Lebanese University, Tripoli 1300, Lebanon
Abdallah El Ghaly: ECE Department, Faculty of Engineering, Beirut Arab University, Beirut 11-5020, Lebanon

Sustainability, 2023, vol. 15, issue 1, 1-19

Abstract: Power electronic converters are used for integrating renewable energy sources such as wind and photovoltaic into the grid. This integration gives rise to many challenges in power systems, especially regarding power quality. Indeed, integrated systems generate a non-linear current full of harmonics, which degrades power quality. Active power filters are usually used to compensate for these harmonics at the point of common coupling. In the control of active power filters, harmonics need to be extracted from the non-linear current. In this paper, the matrix pencil method―a model-based technique for estimating parameters of exponentially damped or undamped sinusoids in noise―is proposed to extract the reference signal in shunt active power filter applications. The performance of the proposed matrix pencil method is studied for current harmonic compensation and power factor correction under different modulation schemes and two DC links: an external DC voltage source and a capacitor. Using a capacitor for the DC link requires not only including a proportional-plus-integral controller to maintain a constant capacitor voltage, but also accounting for the loss current in the formulation of the matrix pencil method. Compared with the instantaneous reactive power theory and synchronous reference frame, results obtained from simulated data using MATLAB/Simulink under different loading conditions show that the proposed method corrects the power factor and affords a lower source current total harmonic distortion and fast response.

Keywords: integrated systems; power quality; shunt active power filter (SAPF); reference signal extraction; instantaneous reactive power theory (IRPT); synchronous reference frame (SRF); power factor correction (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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