In this paper circuit based simulation model for a photovoltaic cell in order to study the electrical behavior of the photovoltaic cell with respect to changes on environmental parameters of temperature and irradiation is presented. This paper also proposes the identification of maximum power point tracking (MPPT) control for photovoltaic (PV) module using the Perturb-Observe algorithm and the generalized system design of single phase grid PV system. .It is crucial to operate the PV energy conversion systems near the maximum power point to increase the efficiency of the PV system. Because of the nonlinear nature of PV system, the current and power of the PV array depends on the array terminal operating voltage. In addition, the maximum power operating point varies with solar irradiance level and temperature. Therefore, the tracking control of the maximum power point is a most important issue for a successful PV system