Harmonic Compensation Method for Low-voltage Small-scale Islanded Microgrids

This paper presents a harmonic compensation method for low-voltage small-scale islanded microgrids, which is implemented using a harmonic observer. The proposed system includes a harmonic observer which helps to decompose the load current harmonics of the non-linear loads. In addition to the load current harmonic decomposition approach, a feed-forward control method is also proposed to reduce the voltage distortion in the islanded microgrid. The main feature of the proposed control system is the estimation of load-induced disturbances and their compensation. Analysis and simulation results are presented to verify the performance of the proposed compensation method.