Summary of results: With the increasing depletion of traditional energy sources, new energy power generation equipment has attracted extensive research and attention. The inherent nonlinear characteristics of the DC-AC inverter system have made traditional linear control schemes unable to meet the requirements of control accuracy and efficiency. Various factors such as sudden changes in the load of the DC-AC converter system, fluctuations in input voltage, electromagnetic interference from semiconductor devices, model errors caused by changes in system parameters, and periodic interference seriously undermine the accuracy requirements of the DC-AC inverter, which in turn affects the entire system. Serious impact.

Background: As power electronics technology matures, switching power supplies are playing an increasingly important role in many industrial categories today. As one of the focuses of power conversion technology, the application of DC-AC inverters has been widely popularized in the industry. Therefore, it is urgent to study and design DC-AC inverter control algorithms with good dynamic and static performance and anti-interference capabilities.

Technical features: Through power electronic components and trigger strategies, DC-AC inverters can use the turn-on and turn-off of semiconductor power switching devices to convert direct current (DC) into alternating current (AC) and supply it to the load or feed it back to the power grid, and obtain AC power with high control accuracy, high quality and meets the load's voltage and frequency requirements. In view of the series of advantages of DC-AC inverters mentioned above, their position in modern industry is becoming increasingly important.