This article presents a comprehensive study on advanced control strategies for solar inverters, including an improved current control strategy, a grid voltage fluctuation adaptive control strategy, and a harmonic suppression strategy. These strategies aim to enhance the stability and power quality. Grid-connected PV inverters (GCPI) are key components that enable photovoltaic (PV) power generation to interface with the grid. Their control performance directly influences system stability and grid connection quality. However, as PV penetration increases, conventional controllers encounter. In PV systems, the power electronics play a significant role in energy harvesting and integration of grid-friendly power systems. Therefore, the reliability, efficiency, and cost-effectiveness of power converters are of main concern in the system design and are mainly dependent on the applied. As the brain of the PV system, the solar inverter is responsible for converting the direct current (DC) produced by solar panels into grid-compatible alternating current (AC), while also performing maximum power point tracking (MPPT), ensuring system safety, and providing grid support functions.
