Robust Feedback-Linearization Technique for Grid-Tied LCL Filter Systems Using Disturbance Estimation

Ahmed Al-Durra, Rachid Errouissi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, feedback linearization (FBL) technique together with disturbance observer approach is proposed to mitigate the effect of the resonant frequency of grid-tied \boldsymbol{LCL} filter systems. The state-feedback control law is employed to achieve stabilization of the \boldsymbol{LCL} filter system under a wide range of resonant frequency variation. The disturbance observer (DO) is designed to counteract the effect of model uncertainty and unknown disturbance aiming to achieve asymptotic stability under feedback linearization control. Specifically, the observer is designed to estimate an additional input, representing uncertainty and unknown disturbance, from measurable variables and then the state-feedback control utilizes the disturbance estimate to compensate for its effect. An interesting feature of the composite controller is its ability to achieve good tracking performances even in the presence of model uncertainty and external disturbance. The composite controller was implemented for experimental evaluation and performance testing. High performance with respect to disturbance rejection and parameter variation has been demonstrated.

Original languageEnglish
Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5294-5300
Number of pages7
ISBN (Electronic)9781479973118
DOIs
Publication statusPublished - Dec 3 2018
Externally publishedYes
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: Sep 23 2018Sep 27 2018

Publication series

Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Conference

Conference10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/TerritoryUnited States
CityPortland
Period9/23/189/27/18

Keywords

  • Disturbance estimation
  • Feedback-linearization
  • Grid-tied filter
  • Renewable energy

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization
  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems and Management

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