Sensorless active damping method of LCL-filter in grid-connected parallel inverters for battery energy storage systems

  • Won Yong Sung
  • , Hyo Min Ahn
  • , Jung Hoon Ahn
  • , Chang Yeol Oh
  • , Byoung Kuk Lee

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

Abstract

In this paper, a sensorless active damping scheme of LCL-filter is proposed in grid-connected parallel inverters for battery energy storage systems. The proposed damping method is superior to the conventional notch filter and virtual damping methods with respect of robustness on the variation of resonance of the filter and unnecessary additional current sensors. The theoretical analysis of the proposed damping method is explained in detail, along with the characteristic comparison to the conventional active damping methods. Through the performance verification of the proposed sensorless active damping method, it is noted that the performance is comparable to the conventional virtual damping method even without additional current sensors. Finally, informative simulation and experimental results are provided to examine the overall characteristics of the proposed method.

Original languageEnglish
Title of host publication2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1425-1429
Number of pages5
ISBN (Electronic)9781509051571
DOIs
StatePublished - 25 Jul 2017
Externally publishedYes
Event3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 - Kaohsiung, Taiwan, Province of China
Duration: 3 Jun 20177 Jun 2017

Publication series

Name2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017

Conference

Conference3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period3/06/177/06/17

Keywords

  • Active damping
  • Energy storage system
  • Grid-connected inverter
  • LCL-filter
  • Parallel-connected Inverter

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