Paper Info
Title
Two-level control of photovoltaic systems using global perturbation-based extremum seeking control and model reference adaptive control
Abstract
One of the main renewable energy sources for the future is photovoltaic (PV) energy. Hence, working of the PV systems at maximum efficiency is taken into consideration in recent years. In this paper, for improving the performance of the global maximum power point tracking under partial shading conditions and uncertainty in parameters of DC-DC converter, a two-level adaptive control scheme is proposed. The proposed controller is capable of efficiently handling the uncertainties in the PV systems and the perturbations in the environment. The first level is global perturbation-based extremum seeking control (GPESC), and the second level is model reference adaptive control (MRAC). GPESC is used to find global maximum power point and MRAC is utilized to handle the dynamics of the DC-DC converter. Adequate difference in the time constants of control levels, causes decoupled control levels, which in turn makes it easy to design the controller. The performance of the proposed control scheme is evaluated through simulation based on four indicators: tracking accuracy, tracking efficiency, tracking speed and searching resolution for different irradiance patterns. The results are compared with GPESC and GPESC with PID controller.
Year
DOI
Venue
2018
10.1177/0142331217731620
TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL
Keywords
DocType
Volume
Model reference adaptive control (MRAC),global perturbation-based extremum seeking control (GPESC),global maximum power point tracking (GMPPT),photovoltaic (PV) systems,partial shading conditions (PSCs)
Journal
40.0
Issue
ISSN
Citations 
13
0142-3312
0
PageRank 
References 
Authors
0.34
4
2
Name
Order
Citations
PageRank
Reza Dadkhah Tehrani100.34
Faridoon Shabaninia2216.74