Power Distribution Method for Single-Phase Cascaded Multilevel Converters Based on Space Vector Modulation

Gabriel Avila Saccol*, Kaio Vinícius Vilerá, Fernanda De Morais Carnielutti, Cassiano Rech

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

97 Downloads (Pure)

Abstract

Cascaded H-bridge converters are interesting candidates for photovoltaic (PV) and energy storage systems, since PV panels and/or batteries can be directly connected to the input dc-side of each converter module. However, differences in the parameters of the batteries or variable ambient conditions may result in energy imbalances among the power modules. In these cases, conventional modulation strategies will lead to an increased distortion on the converter output voltage. Therefore, this paper proposes a generalized space vector modulation for single-phase cascaded H-bridge converters considering the power processed by each power module and maintaining a low-THD multilevel output voltage waveform. The proposed method improves the converter output voltage harmonic spectrum compared to the conventional phase-shifted modulation strategy in cases of power imbalance among modules. Experimental results are included to demonstrate the performance of the proposed method.
Original languageEnglish
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Volume11
Issue number3
Pages (from-to)3445-3456
Number of pages13
ISSN2168-6777
DOIs
Publication statusPublished - 2023

Keywords

  • Cascaded converter
  • Multilevel converter
  • Power balance
  • Space vector modulation

Fingerprint

Dive into the research topics of 'Power Distribution Method for Single-Phase Cascaded Multilevel Converters Based on Space Vector Modulation'. Together they form a unique fingerprint.

Cite this