Single-Phase Inverter Circuit with Repetitive Control

A single-phase inverter circuit is a commonly used power electronic converter that transforms direct current (DC) into alternating current (AC). The circuit comprises multiple electronic components, including switching devices (such as MOSFETs or IGBTs), capacitors, and inductors. The switching devices serve as the core components of the single-phase inverter, controlling the circuit's switching states to achieve bidirectional current transformation.

Repetitive control is a specialized control algorithm frequently employed in single-phase inverter regulation. This algorithm utilizes internal model principles to track periodic references and suppress harmonic distortions by learning from previous cycle errors. Through repetitive control implementation using difference equations and memory buffers, more precise current regulation can be achieved, significantly improving the single-phase inverter's efficiency and waveform quality.

To analyze the performance characteristics of single-phase inverter circuits, MATLAB/Simulink provides an ideal simulation environment. The Power Electronics Toolbox enables modeling of switching components using Simulink blocks or Stateflow representations, while Control System Toolbox facilitates repetitive controller design through transfer function implementations or discrete state-space models. Simulation studies allow comprehensive evaluation of key parameters including total harmonic distortion (THD), dynamic response, and stability margins, providing deeper insights into operational principles and performance advantages.