Open AccessBackstepping based power control of a three-phase Single-stage Grid-connected PV system
Author(s) -
Mohammed El Malah,
A. Ba-Razzouk,
M. Guisser,
Elhassane Abdelmounim,
Mhamed Madark
Publication year - 2019
Publication title -
international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.277
H-Index - 22
ISSN - 2088-8708
DOI - 10.11591/ijece.v9i6.pp4738-4748
Subject(s) - photovoltaic system , control theory (sociology) , phase locked loop , maximum power point tracking , controller (irrigation) , backstepping , computer science , maximum power principle , grid , synchronization (alternating current) , inverter , matlab , three phase , power factor , power (physics) , engineering , voltage , control (management) , adaptive control , electrical engineering , telecommunications , mathematics , physics , channel (broadcasting) , artificial intelligence , biology , operating system , geometry , quantum mechanics , jitter , agronomy
In order to reduce costs while maintaining superior performance, this paper presents a new control methodology of a three-phase grid connected photovoltaic system without using the intermediary DC/DC converter. Based on the synchronized nonlinear model of the whole photovoltaic system, two controllers have been proposed for the three-phase inverter in order to ensure the operation of the PV system at the maximum power point with unity power factor and minimum grid disturbance. Grid synchronization has been ensured by a three-phase 2 nd order PLL (Phase-Locked Loop). The stability of each controller is demonstrated by means of Lyapunov analysis and evaluated under changing atmospheric conditions using the Matlab/Simulink environment, the simulation results clearly demonstrate the performance provided by each controller.