1Faculty of Electrical Engineering University of Economics-Technology for Industries Hanoi, Vietnam
2Faculty of Electrical and Electrical Engineering, Hanoi University of Science and Technology
3Faculty of Electrical and Electrical Engineering, University of Transport and Communications, Hanoi, Vietnam
Received: July 7, 2022 Accepted: December 12, 2023 Publication Date: June 30, 2023
Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.
The paper presents an active voltage compensator (AVC) to prevent voltage fluctuations on the load in both voltage’s rise and fall directions. This AVC is designed based on modeling a three-phase four-branch inverter according to the large-signal average model and the small-signal model—calculation and design of d-q channel controller and 0 channel controller by the frequency-domain method. This AVC significantly reduces production interruptions while protecting equipment life reduction. The theory results are proven through MATLAB/Simulink simulation.
Keywords: UPS; AVC; Sag Fighter; Active filtering
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