Hybrid seven-level cascaded active neutral-point-clamped-based multilevel converter under SHE-PWM

Authors

Sridhar R. Pulikanti, University Of WollongongFollow
Georgios S. Konstantinou, University Of New South Wales
Vassilios G. Agelidis, University Of New South Wales

RIS ID

79931

Publication Details

Pulikanti, S. R., Konstantinou, G. S. & Agelidis, V. G. (2013). Hybrid seven-level cascaded active neutral-point-clamped-based multilevel converter under SHE-PWM. IEEE Transactions on Industrial Electronics, 60 (11), 4794-4804.

Abstract

This paper presents the hybrid seven-level cascaded active neutral-point-clamped (ANPC)-based multilevel converter. The converter topology is the cascaded connection of a three-level ANPC converter and an H-bridge per phase. The voltage of the H-bridge is actively maintained to the required level through selection of the switching states of the converter. The topology is operated under selective harmonic elimination pulsewidth modulation (SHE-PWM), maintaining the switching frequency of the converter to a minimum. The operating principles, voltage balancing methods, and limitations of the converter are analyzed together with extensive simulation results of the topology. Experimental results from a low-power laboratory prototype are presented that verify the operation of the hybrid converter under SHE-PWM.