Multilevel Operation and Input Power Balancing for a Dual Two-Level Inverter with Insulated DC Sources

Author

Casadei, Domenico ; Grandi, Gabriele ; Lega, Alberto ; Rossi, Claudio

Author_Institution

Dept. of Electr. Eng., Univ. of Bologna, Bologna

Volume

44

Issue

6

fYear

2008

Firstpage

1815

Lastpage

1824

Abstract

A multilevel inverter topology feeding a three-phase open-end winding machine is analyzed in this paper. The scheme is based on the use of two insulated DC supplies, each one feeding a standard two-level three-phase inverter. The three-phase six-wire winding is connected across the output terminals of the two inverters. A new modulation technique that is able to regulate the sharing of the output power between the two DC sources in each switching cycle is presented. The performance of the whole system has been verified by both numerical and experimental tests.

Keywords

invertors; modulation; switching convertors; dual two-level inverter; input power balancing; insulated DC sources; insulated DC supplies; modulation technique; multilevel inverter topology; switching converters; three-phase open-end winding machine; three-phase six-wire winding; two-level three-phase inverter; Batteries; Commutation; Industry Applications Society; Insulation; Inverters; Machine windings; Medium voltage; Space technology; Switching converters; Topology; Dual two-level inverter; power sharing; space vector modulation; three-level inverter;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2008.2006323

Filename

4681936