SOGI-Q Based Control of Power Quality Enhancement in Solar PV Distributed Generation [articol]

Abstract

A three-phase multifunctional grid supported solar energy generation system with a two stage circuit topology is proposed. A two stage circuit topology is divided as boost converter serving MPPT and as a grid tied four-leg VSC (Voltage Source Converter), which serves for feeding the extracted solar photovoltaic energy into the grid and also serves for power quality improvement. SOGI-Q (Second Order Generalized Integrator-Quadrature) based control algorithm is proposed for the control of this multifunctional four-leg VSC. A feed-forward term for the solar PV contribution is used to enhance the dynamic response for CPI voltage variation. Simulations have been done in SIMULINK software of MATLAB14a. The performance of the proposed control algorithm is validated through the simulation results.