Indirect grid current control of LCL filter based grid-connected converter

Subhajyoti Mukherjee, Pourya Shamsi, Mehdi Ferdowsi, Jonathan Kimball

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

1 Scopus citations

Abstract

This paper presents a method to indirectly control the grid current of a grid connected converter interfaced with a LCL filter. The proposed method is based on estimating the fundamental and harmonic components of the current drawn by the filter capacitor. The estimated fundamental and harmonic components of the filter capacitor current are then compensated by injecting an equal amount of current from the converter side using a well-designed current controller. This indirectly ensures the grid current to be at the desired power factor and immune to any distortions in the grid voltage. The proposed estimation and control scheme is verified by experimental results.

Original languageEnglish
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3024-3031
Number of pages8
ISBN (Electronic)9781538683309
DOIs
StatePublished - May 24 2019
Externally publishedYes
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: Mar 17 2019Mar 21 2019

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2019-March

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/TerritoryUnited States
CityAnaheim
Period03/17/1903/21/19

Keywords

  • Grid connected converter
  • Harmonic compensation
  • LCL filter
  • Sensor less control
  • Voltage estimation

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