Active damping for grid-connected LCL filter based on optimum controller design using injected grid current feedback only

Mahmoud A. Gaafar, Masahito Shoyama

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

11 Citations (Scopus)

Abstract

LCL filters are widely used for grid-connected converters because its superiority over L and LC filters, however the resonance problem produced by these filters requires a more effort in the design process to damp it. Active damping techniques which use the sensed capacitor current are widely used in this regard to solve this problem; however this requires an increase in the number of sensors. Based on the optimum design for PI controller, this paper introduces an active damping method based on the capacitor estimated current without increase in the number of sensors. This is achieved by using an additional observer loop as a feedback in the controller loop to estimate the capacitor current. The simulation results for the proposed control algorithm are introduced in this work.

Original languageEnglish
Title of host publication2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3628-3633
Number of pages6
ISBN (Electronic)9781479956982
DOIs
Publication statusPublished - Nov 11 2014

Publication series

Name2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Energy Engineering and Power Technology

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