For improved efficiency and simple power converter topology MPPT tracking, harmonic output current reduction, and grid synchronization are all done at a single stage For Grid-connected Photovoltaic-system control. All control aspects of this paper have been done using soft techniques. In these, the adaptive neuro-fuzzy inference method (ANFIS) controller is used instead of the traditional PI controller. This paper also addresses a single-stage three-phase photovoltaic system linking to the IEEE-33 bus distribution network with a changed control strategy. The CGVD (compensator for grid voltage disturbance / dip) block is proposed modified block used to eliminate harmonics in the ac side of the grid for improved controller performance and also for the use of real and reactive power controllers. For the purpose of regulating dc-link voltage, the proposed FBL (feedback linearization) voltage controller is used with the PV-current feed forward signal. In this article, p-q technique is used for real and reactive power control by using the d-q components of the grid present. The proposed model is tested in different conditions, e.g. dynamic performance is evaluated on the MATLAB platform.
Volume 12 | Issue 2