In proposed a new type of DC to three phase AC converters using modulation technique for the modified coupled-inductor single-stage boost inverter (CL-SSBI). In this technique used in the PV system because in the PV system the output is DC current it is not directly use in the grid. The gird connected to the 3-phase ac. So the DC-3 phase AC conversion. This technique can reduce the system leakage current in a great deal and can meet the VDE0126-1-1 standard. It process done in only a diode is added in the front of the original topology, to block the leakage current loop during the active vectors and open-zero vectors. The near state pulse width modulation (NSNSPWM) technique is applied with one-leg shoot-through zero vectors in order to reduce the leakage current through the conduction path in the duration of changing from and to open-zero vectors. Simultaneously, the leakage current caused by other transitions can also be reduced due to the fact that the magnitude of common-mode voltages is reduced. Simulation results of our proposed is done MATLAB simulinkmodel.