Mitigating Twice the Fundamental Frequency Ripple in Three-Phase to Single-Phase Power Converters through Improved DC Link Voltage Control

Lorenzo Carbone, Meiqi Wang, Gioele Baia, Qilin Peng, Alan J. Watson

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

Abstract

Single phase grid connected converters suffer from the well-known pulsation of power at twice the fundamental frequency. This ripple affects the current in the three-phase AC system through the DC link voltage control, leading to inefficiencies and potential reliability concerns. An improved DC link voltage control algorithm, based on the small signal approach, is proposed in this paper, in order to ensure constant input power on the three-phase side despite the pulsating single-phase output power. This algorithm theoretically eliminates the twice ripple effect on 3ϕ quantities, optimising harmonic content and system performance. Simulation results validate the effectiveness of the method, with experimental validation planned for a same scale power conversion system. These results will be detailed in an extended version of this paper. Compared to conventional solutions, this approach significantly improves three-phase side ripple mitigation, increasing the performance and reliability of the power conversion system without the need for additional equipment.

Original languageEnglish
Title of host publicationIECON 2024 - 50th Annual Conference of the IEEE Industrial Electronics Society, Proceedings
PublisherIEEE Computer Society
ISBN (Electronic)9781665464543
DOIs
Publication statusPublished - 2024
Event50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024 - Chicago, United States
Duration: 3 Nov 20246 Nov 2024

Publication series

NameIECON Proceedings (Industrial Electronics Conference)
ISSN (Print)2162-4704
ISSN (Electronic)2577-1647

Conference

Conference50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024
Country/TerritoryUnited States
CityChicago
Period3/11/246/11/24

Keywords

  • DC link voltage control
  • Neutral Point Clamped
  • Ripple mitigation
  • Three-Phase to Single-Phase converter
  • Twice Fundamental Frequency ripple

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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