how to simulate a pv inverter connected to the grid

Hi, I am PhD student in electrical engineering at the University of Constantine; I work on the axis of new architectures distributed of management and energy conversion for the photovoltaic applications.

In my study, I need to simulate a PV inverter model in Simulink in order to do some testing of PV inverter connected to the grid and the variation of its output. I realized a Simulation model of the PV with boost and three-phase inverter, but I found a wrong results. I think I have a mistake in MPPT controller because all of my results fluctuate between the true values and returned to zero. Thank you for all

[Serdar TOGAY]

did you solve the problem ? If you solved. can you share ?