In this paper, a voltage mode controller called Quasi proportional-resonant (Quasi-PR) controller has adopted in a three-phase capacitive-coupling grid-connected inverter (CGCI) PV system. Under CGCI structure, the function of the inverter is to compensate the reactive power as well as generate the active power to the grid with low operating dc-link voltage. The Quasi-PR controller could be effectively applied in a sinusoidal current tracking problem with low steady-state error and suppressing the system voltage disturbance at the fundamental frequency. Experimental results are given to verify the effectiveness of the suggested controller in CGCI.