Nonlinear Backstepping Controller Design for Grid-Connected Photovoltaic Systems with Output LC Filters to Improve Dynamic Stability and Power Quality

T. K. Roy, M. A. Mahmud, Shama Naz Islam, N. Rajasekar, K. M. Muttaqi, Amanullah M.T. Oo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

A nonlinear backstepping controller is designed in this paper for grid-connected photovoltaic (PV) systems with output LC filters to improve the dynamic stability over a large operating region and power quality. The detailed dynamical model of grid-connected PV systems with output LC filters are used to design the proposed backstepping scheme which ensures the desired tracking of all states. Since the proposed scheme uses all nonlinearities within the grid-PV system along with the dynamics of LC filters, the switching control inputs have the ability to ensure the overall dynamic stability and improve the power quality under any circumstance. The concept of control Lyapunov function (CLF) defining the energy of the system is used to analyze the convergence of all errors characterizing the tracking for different states. The performance of the proposed nonlinear backstepping controller (NBC) is evaluated on a gridconnected system with an output LC filter and the same scheme is compared by employing it on a similar system having an L filter.

Original languageEnglish
Title of host publication2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781728142517
DOIs
Publication statusPublished - 4 Jan 2020
Externally publishedYes
Event2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020 - Cochin, India
Duration: 2 Jan 20204 Jan 2020

Publication series

Name2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020

Conference

Conference2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020
Country/TerritoryIndia
CityCochin
Period2/01/204/01/20

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