Photovoltaic Grid-Connected Inverter SIMULINK Simulation Model with Dual-Loop PI Control and Repetitive Control

This SIMULINK simulation program models a photovoltaic grid-connected inverter system featuring dual-loop PI control combined with repetitive control. The implementation utilizes SIMULINK blocks to simulate the operational principles of grid-connected photovoltaic inverters, where the dual-loop PI regulator maintains precise current and voltage control through inner current loop and outer voltage loop configurations. The repetitive control algorithm is integrated to suppress periodic disturbances and improve waveform quality by learning from previous周期的误差信息. Through this simulation model, engineers can analyze inverter dynamics, optimize control parameters using PID tuner blocks, and evaluate system performance under various grid conditions. The model demonstrates practical implementation of control strategies including feedforward compensation and harmonic suppression techniques, providing insights into efficiency optimization and reliability enhancement for renewable energy integration systems.