Solar energy is one of the emerging forms of renewable energy, and has been proved to be a potential source for generation of electricity. However, the rise in number of photovoltaic (PV) generators presents issues for electric power utilities. The objective of this thesis is to achieve stability for a grid-connected PV system with the proposed new power system stabilizer (PSS). Stability is attained by conducting small signal analysis and time domain analysis on the investigated PV system. First, time domain analysis on detailed and average PV system models without PSS is performed. Second,
small signal stability analysis on average PV system model with and without PSS is performed. It is observed that the damping effect and the dynamic stability of the investigated PV system are achieved, with the help of the proposed new PSS.