Nonlinear MPPT techniques to control hybrid power systems

In recent years, grid-connected multifunctional photovoltaic (PV) systems have proven to be highly efficient. This system integrates PV panels with a DC–DC boost converter (DC–DC–BC) and the electrical distribution grid (DEG). Linking the PV to the AC-DEG is accomplished through a three-level multifunctional voltage source inverter (MVSI). The DC–DC–BC component in this study is engineered to perform maximum power point tracking (MPPT) irrespective of normal or abnormal conditions. The conventional MPPT technique poses several challenges and constraints on system usage. Hence, the suggestion is to adopt synergetic control (SC) and sliding mode control (SMC) to enhance the MPPT technique's performance within the proposed system framework. Moreover, predictive direct power control is applied to the MVSI-based shunt active power filter, utilizing a phase-locked loop technique to achieve multiple objectives: minimizing energy fluctuations, injecting active power, correcting power factors, compensating reactive power, and mitigating harmonic currents. To implement the proposed system, the MATLAB is used for this purpose, with several tests used to study the behavior of the controls proposed in this work. Numerical results indicate significant reductions in active and reactive power fluctuations, with estimated rates of 38.46% and 15.30%, respectively, compared to traditional strategies. Moreover, the total harmonic distortion (THD) of the source current after filtering is reduced by 31.88% under solar irradiation of G = 1000 Wm2. Before filtering, the THD of current experiences a reduction estimated at 97.65%. These findings underscore the superior performance of the proposed control technique across all evaluated aspects

3D Space Vector Modulation control of four-leg shunt active power filter using pq0 theory

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Control of the Three Phase four-wire four-leg SAPF Using 3D-SVM Based on the Two Methods of Reference Signals Generating CV and SRF in the dqo-axes

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Power Quality Improvement Using a Four Leg SAPF Based on Phase Locked Loop with Multi Variable Filter Under Unbalanced Source Voltages and Loads

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Power Quality Improvement Using a New Three Dimensional Space Vector Modulation strategy in the αβ0-axes for Control The Three Level Four-Leg Shunt Active Power Filter

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Hybrid Nonlinear Backstepping Fuzzy Logic Control for Four-Leg Shunt Active Power Filter based on Synchronous Reference Frame Theory with Fixed Switching Frequency

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Fuzzy logic controllers and Three Dimensional Space Vector Modulation technique in the αβo axes for three-phase four-wire four-leg shunt active power filter

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Fuzzy logic controllers for three levels shunt active power filter compensated by three-levels stabilizing SpaceVector Modulation to Fixed Switching Frequency and switching lasses under balanced and unbalanced load

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The pq0 theory with multi variable filter and fuzzy logic control for a four-leg shunt active power filter compensated by three-dimensional space vector modulation under unbalanced loads.

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