Research on MPPT and Second-Order LADRC Control for Single-Phase Grid Connection in Photovoltaic Power Generation

This article presents a comprehensive study on Maximum Power Tracking (MPPT) and Linear Active Disturbance Rejection Control (LADRC) of grid-connected inverters in photovoltaic power generation systems. Firstly, the principles and characteristics of photovoltaic power generation are analyzed, and a detailed introduction to the basic principles and implementation methods of MPPT technology is provided. Secondly, the focus is on the application of linear active disturbance rejection control in grid-connected inverters. By constructing a grid-connected inverter control model based on LADRC and conducting simulation analysis and experimental research, the effectiveness of this control strategy in improving system stability, dynamic response, and anti-interference ability was verified.