A capacitor current control for stand-alone inverters using an inductor current observer

This paper discussed an inductor current observer design that employs a capacitor current control model for single-phase stand-alone inverters. The single-phase stand-alone inverter is analyzed via modeling. The proposed solution is able to guarantee a fast dynamic response and also a precise compensation of a distortion load. Moreover, with a proper design of observer parameters, it is possible to build a precise inductor current information without the inductor current sensor. The simulation and experimental results show that the performance of the proposed controller.