Improving the quality of energy using an active power filter with zero direct power command control related to a photovoltaic system connected to a network

• Published in: Electronics and electromechanics Vol. 2023; no. 5; pp. 20 - 25
• Main Authors: Djazia, K., Sarra, M.
• Format: Journal Article
• Language: English
• Published: Kharkiv Department of Electrical Apparatus of National Technical University, Kharkiv Polytechnic Institute 01.01.2023; National Technical University, Ukraine; National Technical University "Kharkiv Polytechnic Institute"
• Subjects: active power filter; Control systems; Electric filters; Electrical networks; Energy; Fuzzy logic; fuzzy logic maximum power point tracking controller; Harmonic distortion; Matlab; Maximum power tracking; photovoltaic array; Photovoltaic cells; Power factor; Quality management; Solar energy; Solar energy industry; zero direct power command
• ISSN: 2074-272X; 2309-3404
• DOI: 10.20998/2074-272X.2023.5.03

Introduction. This article’s subject is a dual function energy system that improves the quality of the electric energy with help of an active power filter and uses a new technique of command named ZDPC (Zero Direct Power Command) on one hand, and on the other hand it injects the photovoltaic (PV) renewable energy to the electrical networks in the presence of non-linear charges. The novelty of the work consists in the subtraction of disturbances resulting from the non-linear charges is provided by an active power filter based on a new ZDPC method. Methods. This strategy combines a classic PI controller for DC bus voltage regulation with a smart method to maximum power point tracking (MPPT) of power based on fuzzy logic. Purpose. The elimination of the undesirable harmonics from the source currents makes the current almost sinusoidal with a harmonic distortion rate close to 1 %. The injection of PV energy into the electrical grid is provided by a PV panel in series with a chopper through a two-state inverter. Results. This system is simulated using MATLAB/Simulink software. The results prove the robustness and feasibility of the ZDPC control which simultaneously guarantees the compensation of harmonic currents, the correction of the power factor and the injection of the solar power into the electrical grid.