Z-Source Multilevel Inverters Chapter uri icon


  • 2016 John Wiley & Sons, Ltd. All rights reserved. There are two hotly researched Z-source/quasi-Z-source (ZS/qZS) multilevel inverters: the ZS/qZS neutral-point-clamped (NPC) inverter and ZS/qZS cascaded multilevel inverter (CMI). The ZS/qZS concept, integrating with those traditional multilevel inverters, inherits the merits of both topologies with improved inverter reliability due to short-circuit immunity. This chapter presents the configurations, operating principles, and modulation schemes of the two ZS/qZS multilevel inverters. Three-level NPC inverters, having many inherent advantages, are commonly used as the preferred topology for medium voltage ac drives. The CMI is a promising candidate for the next generation of PV power converters because it has features such as separate PV sources, transformerless, low harmonics, small filters, and low switching frequency. The system-level modeling and control of a qZS-CMI-based three-phase grid-tie PV power system were addressed, and simulation results were demonstrated, providing a competitive candidate for high-power medium-voltage power systems.

author list (cited authors)

  • Loh, P. C., Liu, Y., Abu-Rub, H., & Ge, B.

complete list of authors

  • Loh, Poh Chiang||Liu, Yushan||Abu-Rub, Haitham||Ge, Baoming

Book Title

  • Impedance Source Power Electronic Converters

publication date

  • September 2016