Control of Grid Tied Smart PV-DSTATCOM System Using an Adaptive Technique

This paper presents a control of smart PV (Photovoltaic)-DSTATCOM (Distribution Static Compensator) grid tied system using an adaptive reweighted zero attracting (RZA) control algorithm with P & O (Perturb and Observe) maximum power point tracking technique for a three-phase system to improve power quality and support the three phase AC grid by supplying power both to the grid and the connected loads. The proposed PV grid tied system is capable of working round the clock. During sunshine conditions, the proposed system performs dual functions of improving power quality by working as DSTATCOM and also transfers power to the load and the grid obtained from PV array. However, during night or cloudy conditions, the proposed system works as DSTATCOM improving power quality and the power is transferred from the grid to the load. The system is termed as a smart as it is able to perform both modes automatically sensing the PV power and is capable of multidirectional power flow. The proposed method results evaluated by using Matlab/Simulink software.

Keywords: PV-DSTATCOM, DSTATCOM, RZA and Power Quality.