ADRC Limited Power Control Strategy for Single Stage Photovoltaic Inverter Systems

After the large-scale grid connection of photovoltaic power generation, the volatility and randomness of photovoltaic power generation will have an impact on the traditional power grid. Therefore, it is necessary to limit the power generation of photovoltaic power generation systems and inject stable power into the power grid to reduce the impact on the power grid. This article proposes a combined control strategy of maximum power tracking (MPPT) and limited power control based on auto-disturbance rejection (ADRC) technology for single-stage photovoltaic inverter systems, achieving flexible control of grid connected power generation in single-stage photovoltaic inverter systems. Simulation has verified the effectiveness of this control strategy in situations of light changes, limited power changes, and grid voltage fluctuations.