Title :
Advanced nonlinear control of photovoltaic system connected to the grid
Author :
Aouadi, Chaouqi ; Abouloifa, Abdelmajid ; Hamdoun, Abdellatif ; Boussairi, Yasser
Author_Institution :
LTI Lab. Fac. of Sci. Ben M´sik, Univ. HASSAN II Mohammedia-Casablanca, Casablanca, Morocco
Abstract :
This paper presents the nonlinear control of single-phase grid connected to the photovoltaic system through an adaptation circuit and LCL filter. The control objective is threefold i) regulating the DC voltage to a desired value (VR) ii) supply a current with sinusoidal form and in phase with the grid voltage by controlling DC/AC converter (power factor correction: PFC) iii) extracting the maximum power from the PV array by acting on the DC/DC converter (MPPT)). The whole system is described by 5th order nonlinear mathematical model and controlled by using the backstepping technique and its tools from Lyapunov stability. The simulation results have been performed through Matlab/Simulink environment and show that the designed controller meets its objective.
Keywords :
DC-AC power convertors; Lyapunov methods; control nonlinearities; maximum power point trackers; nonlinear control systems; photovoltaic power systems; DC voltage; DC/AC converter; DC/DC converter; LCL filter; Lyapunov stability; PV array; adaptation circuit; advanced nonlinear control; backstepping technique; grid voltage; photovoltaic system; power factor correction; single-phase grid; Arrays; Backstepping; Inverters; Lyapunov methods; Mathematical model; Photovoltaic systems; Voltage control; Lyapunov stability; MPPT; PFC; PV array; averaging model; backstepping technique;
Conference_Titel :
Complex Systems (WCCS), 2014 Second World Conference on
Print_ISBN :
978-1-4799-4648-8
DOI :
10.1109/ICoCS.2014.7060954
