Simulation and Analysis of Virtual Oscillator Control for Parallel Connected Single Phase Inverters

With the increased popularity in the paralleling of voltage sources and inverters, there is a need for simpler yet effective ways of controlling such a system. In this regard a new control scheme using Virtual Oscillator Control (VOC) has been developed. The paper presents some important simulation results conducted on the performance of VOC under stand alone and grid connected applicationsThis paper also proposes a frequency compensation scheme to tackle sub-harmonics in the output voltage arising due to frequency variation in grid-connected mode. The validity of the new scheme is verified using simulation results.