Simulation And Implementation Of Single-stage Three-phase Grid Connected Pv System Using Svm-controlled Three-level Inverter
Résumé: In this work, three-phase single stage grid-connected photovoltaic system using current control inverter is simulated using Matlab/Simulink. To deal with varying irradiance conditions, the incremental conductance MPPT has been used. The main part of the project that is the three-level (NPC) inverter together with its SVM control algorithm has been implemented. The proposed system consists of three-level neutral point clamped inverter, the converter used is a Voltage Source Inverter (VSI) which is controlled using synchronous d-q reference frame to inject a controlled current into the grid. Phase locked loop (PLL) is used to lock grid frequency and phase. And an LCL filter used at the inverter output to remove the high frequency ripple. The main result of the project is that power has been injected to the grid while the current’s THD has been kept below the level required by the international standards.
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