Abstract
A new type of multilevel inverter is introduced which is created by cascading two three-phase three-level inverters using the load connection, but requires only one dc voltage source. This new inverter can operate as a seven-level inverter and naturally splits the power conversion into a higher-voltage lower-frequency inverter and a lower-voltage higher-frequency inverter. This type of system presents particular advantages to Naval ship propulsion systems which rely on high power quality, survivable drives. New control methods are described involving both joint and separate control of the individual three-level inverters. Simulation results demonstrate the effectiveness of both controls. A laboratory set-up at the Naval Surface Warfare Center power electronics laboratory was used to validate the proposed joint-inverter control. Due to the effect of compounding levels in the cascaded inverter, a high number of levels are available resulting in a voltage THD of 9% (without filtering).
Recommended Citation
K. Corzine et al., "Control of Cascaded Multilevel Inverters," IEEE Transactions on Power Electronics, Institute of Electrical and Electronics Engineers (IEEE), May 2004.
The definitive version is available at https://doi.org/10.1109/TPEL.2004.826495
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
23 KW; Cascaded Inverter; Naval Surface Warfare Center Power Electronics Laboratory; Cascade Control; Cascade Networks; Cascaded Inverter Control; Dc Voltage Source; Invertors; Joint-Inverter Control; Load Connection; Multilevel Inverter; Multilevel Inverter Control; Naval Ship Propulsion System; Power Quality; Three-Level Inverter; Three-Phase Three-Level Inverters
International Standard Serial Number (ISSN)
0885-8993
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2004 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
01 May 2004
