Switching Harmonics Suppression of Single-loop Multi-sampling Control of Grid-connected Inverter

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

5 Citations (Scopus)

Abstract

Multi-sampling control provides an attractive way to reduce the control delays in LCL grid connected inverters, then the bandwidth and stability margin will be improved. However, high frequency switching harmonics (SHs) are introduced in the control loop, which may cause low frequency aliasing and deteriorate the power quality. In this paper, the multi-sampled currents are reconstructed through the double-sampled average currents, which is simple and easy to implement in a microprocessor. As a result, most of the SHs are removed and the power quality is better than the conventional multi-sampling control. Finally, a single-loop pseudo-derivative-feedback control with inverter current feedback is employed, and the effectiveness of the proposed method is verified through simulation.
Original languageEnglish
Title of host publicationProceedings of IECON 2020 : The 46th Annual Conference of the IEEE Industrial Electronics Society
Number of pages6
PublisherIEEE Press
Publication dateSept 2020
Pages3259-3264
Article number9254831
ISBN (Electronic)978-1-7281-5414-5
DOIs
Publication statusPublished - Sept 2020
EventIECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society - Online
Duration: 18 Oct 202021 Oct 2020
https://www.iecon2020.org/

Conference

ConferenceIECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society
LocationOnline
Period18/10/202021/10/2020
Internet address
SeriesProceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN1553-572X

Keywords

  • switching harmonics
  • low frequency aliasing
  • multi-sampled currents recunstruction
  • Power quality

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