Hybrid 7-Level Boost Active-Neutral-Point-Clamped (H-7L-BANPC) Inverter

Sze Sing Lee, Chee Shen Lim, Yam P. Siwakoti, Kyo Beum Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

The emerging active-neutral-point-clamped (ANPC) inverters with voltage-boosting capability are attractive for their low dc-link voltage requirement. These low voltage requirements enable a single-stage dc-Ac power conversion, which improves the overall efficiency, reliability, and power density of the system. A high voltage gain of 1.5 was demonstrated in recent boost type ANPC topology; however, it was achieved at the expense of high voltage stress on some of its switching devices. This brief proposes an improved topology with reduced voltage stress and a lower number of components while retaining the merits of high voltage gain. The proposed topology is a hybrid of a T-Type inverter and an H-bridge, which require only one floating capacitor and one less power switch than the aforementioned topology. One floating capacitor with self-voltage balancing capability is integrated to generate 7 output voltage levels. The proposed topology is analyzed and compared with recent boost ANPC topologies. Experimental results are presented for validation.

Original languageEnglish
Article number8865611
Pages (from-to)2044-2048
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Volume67
Issue number10
DOIs
Publication statusPublished - Oct 2020
Externally publishedYes

Keywords

  • 7-level
  • boost ANPC
  • multilevel inverter
  • voltage-boosting

Fingerprint

Dive into the research topics of 'Hybrid 7-Level Boost Active-Neutral-Point-Clamped (H-7L-BANPC) Inverter'. Together they form a unique fingerprint.

Cite this