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Controller Decoupling Design of LCL Three - Phase Grid - Connection Inverter Based on Capacitor Voltage Feedforward

  • Chaoyue Gao
  • , Yanchao Ji
  • , Jianze Wang
  • , Tianyv Zhu
  • , Xiangyv Sai
  • School of Electrical Engineering and Automation, Harbin Institute of Technology

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

Abstract

Under the same filtering effect, the total inductance required by the LCL filter is smaller than that of the L filter, and is more suitable for the application of the high-power grid connected devices. In this paper, a model of dq synchronous rotating coordinate system is established for the structure of LCL filter, and the two axes of dq are controlled by decoupling. The design method of the double closed loop controller with capacitive voltage and grid connected current is studied, which improves the control precision and obtains a certain system robustness. The simulation results show that the design method of decoupling controller design can make the inverter run steadily and obtain high quality grid connected current.

Original languageEnglish
Title of host publicationProceedings of 2018 2nd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2018
EditorsBing Xu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1617-1622
Number of pages6
ISBN (Electronic)9781538618035
DOIs
StatePublished - 20 Sep 2018
Externally publishedYes
Event2nd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2018 - Xi'an, China
Duration: 25 May 201827 May 2018

Publication series

NameProceedings of 2018 2nd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2018

Conference

Conference2nd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2018
Country/TerritoryChina
CityXi'an
Period25/05/1827/05/18

Keywords

  • LCL filter
  • capacitance voltage
  • decoupling control
  • double closed loop control

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