Abstract
This paper introduces a new self-synchronization mechanism for three phase current controlled voltage source inverter (CCVSI). The grid connected operation of the inverters is smoothly managed with the use of a hybrid quasi-proportional resonant (QPR) regulator embedded with a universal droop controller. Prominently, the commonly used phase-locked-loop (PLL) that is required to for synchronization with the main grid is obviated. This way, isolation and reconnection with the main grid is achieved seamlessly without the need of a dedicated synchronization unit. Modeling and simulation results are presented using MATLAB/SIMULINK software to show the effectiveness of the proposed strategy.