An Enhanced Current Controller for Grid-Connected Inverters based on Capacitor Current Feedback Active Damping and Capacitor Voltage Decoupling

This paper proposes a new control strategy for LCL-filtered grid-connected inverters, based on capacitor current feedback active damping and capacitor voltage decoupling. The results show that this control strategy can mitigate the resonance frequency effect and improve the disturbance rejection of the system by diminish the grid voltage harmonics influence over the injected current.