Power Quality Performance Enhancement Using Single-phase UPQC with Fuzzy Logic Controller Integrated with PV-BES System

Amirullah, Amirullah and Ananda, Adi (2024) Power Quality Performance Enhancement Using Single-phase UPQC with Fuzzy Logic Controller Integrated with PV-BES System. INASS: International Journal of Intelligent Engineering and Systems, 17 (4). pp. 87-108. ISSN 2185-3118

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Abstract

The research objective is to enhance the power quality performance of a single-phase unified power quality conditioner (UPQC) system supplied by a combination of photovoltaic (PV) array and battery energy storage (BES) using fuzzy logic control (FLC) connected to a 220 V-50 Hz distribution system. The PV array consists of several PV panels with a maximum power of 12 kW. Solar PV is highly dependent on external environmental factors i.e. sunlight, temperature, radiation, weather and seasons where levels can change at any time. BES functions to store PV power and both provide a more stable load power supply to the load when an interruption/disconnection occurs on the source (off-grid mode). The proposed system is also more efficient because it does not require a DC-link capacitor. The FLC method with the Mamdani fuzzy inference system (FIS) is proposed to overcome the weaknesses of proportional and integral (PI) control in determining proportional constants and integral constants. The faults were selected in a total of six case studies (CS) based on the fault categories and single-phase UPQC configuration i.e. CS 1 (sinusoidal/S-Sag-non-linear load/NL-PV), CS 2 (S-Swell-NL-PV), CS 3 (S-interruption /Inter-NL-PV), CS 4 (SSag-NL-PV-BES), CS 5 (S-Swell-NL-PV-BES), and CS 6 (S-Inter-NL-PV-BES). In single-phase UPQC systems from CS 1 to CS 6, FLC is able to produce lower total harmonic distortion (THD) of load voltage and source current,as well as higher source power factor (PFS) compared to proportional-integral (PI) control. The system using singlephase UPQC on CS 1 to CS 6 with PI/FLC control is capable of producing load voltage THD and source current THD below IEEE 519 limits. The system with a single-phase UPQC configuration with PI/FLC control shows that CS 4 to CS 6 is capable produces a change in load voltage disturbance that is slightly greater than CS 1 to CS 3. The system uses single-phase UPQC with PI/FLC control on CS 3 and CS 6 is able to deliver load active power with values close to CS 1 and CS 4.

Item Type:	Article
Additional Information:	Journal : International Journal of Intelligent Engineering and Systems ., ijies@inass.org . SJR Q2
Uncontrolled Keywords:	Power quality, Single-phase UPQC-PV-BES, FLC, PI, THD.
Subjects:	Technology > 621.3 Electrical Engineering
Divisions:	Faculty of Engineering > Bachelor of Electrical Engineering
Depositing User:	Perpus Ubhara Surabaya
Date Deposited:	24 Jul 2024 06:50
Last Modified:	24 Jul 2024 06:50
URI:	http://eprints.ubhara.ac.id/id/eprint/2608

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