Grid current control of flyback type Micro Inverter based on FASVM

In order to reduce the harmonic content of the grid current for flyback type Micro Inverter(MI), the main factors affecting the grid current is analyzed, and the inverse model is established based on Firefly Algorithm-Support Vector Machine (FA-SVM). Combine the inverse model with a single closed-loop PI controller, a novel grid current control method is presented. Simulation results show that compared with the traditional PI controller, the presented method could effectively improve the waveform quality of grid current.