This paper presents the control model of three phase grid connected photo voltaic generation system with a new approach for power factor regulation. The model contains a detailed representation of the main components of the system that are the solar panels, DC/DC converter, DC-link, a grid side three phase voltage source inverter (VSI) and output filters to reduce harmonic distortion of line current. In this paper, a complex control scheme including two PI controllers cooperated with MPPT is proposed to stabilize DC voltage. A three phase grid connected voltage source inverter synchronizes to the grid by a robust phaselocked loop (PLL). The new approach of power factor control scheme is proposed, simulated by Matlab Simulink Toolbox and implemented using DSP TMS320F2812. Simulation and experimental results show the high stability and high efficiency of this three-phase grid-connected PV system. It also proves the excellent performance control units as improving a flexible regulation of power factor (PF) for the interval (0.5 - 1).