Asymmetrical Cascaded Multilevel Inverter Based on Transistor-Clamped H-Bridge Power Cell

Author

Elias, Mohamad Fathi Mohamad ; Abd Rahim, N. ; Hew Wooi Ping ; Uddin, M. Nasir

Author_Institution

Univ. of Malaya, Kuala Lumpur, Malaysia

Volume

50

Issue

6

fYear

2014

fDate

Nov.-Dec. 2014

Firstpage

4281

Lastpage

4288

Abstract

This paper presents an asymmetrical cascaded multilevel inverter based on a five-level transistor-clamped H-bridge power cell. A two-cell configuration with a dc link voltage ratio of 4 : 1 is presented. The modulation method is based on the fundamental frequency switching. An analysis of the inverter output voltage and harmonics is presented. Injection of the third harmonic voltage as to maximize the output voltage and the issue of the inverse power flow or regeneration in the low-voltage cell are presented. The prototype of the proposed inverter was built, and its functionality was verified through experimental results.

Keywords

bridge circuits; cascade networks; invertors; load flow; modulation; power conversion harmonics; switching convertors; transistor circuits; DC link voltage ratio; asymmetrical cascaded inverter; frequency switching; inverse power flow; inverter output voltage; low-voltage cell; modulation method; multilevel inverter; third harmonic voltage; transistor-clamped H-bridge power cell; Educational institutions; Harmonic analysis; Inverters; Low voltage; Modulation; Switches; Topology; Asymmetric cascaded multilevel inverter; cascaded H-bridge (CHB); dc link voltage ratio; fundamental frequency switching; transistor-clamped H-bridge inverter (TCHB);

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2014.2346711

Filename

6881707