Multilevel hybrid cascade-stack inverter with substantial reduction in switches number and power losses

Authors

MAHDI TOOPCHI KHOSROSHAHI
ALI AJAMI
ATA OLLAH MOKHBERDORAN
MOHAMMADREZA JANNATI OSKUEE

DOI

10.3906/elk-1304-179

Abstract

This paper proposes a multilevel hybrid cascade-stack (HCS) converter. Recently, different new topologies for cascade-type converters have been suggested with the goal of reducing switch number, loss, switch PIV, etc. Meanwhile, output voltage steps increase, and the number of switches is predominately reduced in the suggested inverter in comparison to conventional cascade converters. Additionally, a reduction in the number of on-state switches in the introduced topology causes power loss and voltage drop to decrease. Firstly, the fundamental parts of inverter configuration are described. Afterwards, symmetric and asymmetric converter types are discussed. Simulation and experimental results for 11- and 23-level symmetric types and a 31-level asymmetric form of converter are described.

Keywords

Reduced number of circuit devices, inverter power losses, cascade-stack multilevel inverter, symmetric and asymmetric topology

First Page

987

Last Page

1000

Recommended Citation

KHOSROSHAHI, MAHDI TOOPCHI; AJAMI, ALI; MOKHBERDORAN, ATA OLLAH; and OSKUEE, MOHAMMADREZA JANNATI (2015) "Multilevel hybrid cascade-stack inverter with substantial reduction in switches number and power losses," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 23: No. 4, Article 5. https://doi.org/10.3906/elk-1304-179
Available at: https://journals.tubitak.gov.tr/elektrik/vol23/iss4/5