This paper introduces a novel crossing front-end dc/dc converter for a four-level drive system which provides a voltage boost as well as dc capacitor bank voltage regulation. The primary advantage of the proposed converter is that it simplifies the control of the four-level diode-clamped inverter since capacitor voltage balancing is not required by the inverter control. Furthermore, the inverter modulation index can be varied up to its physical limitation. An average-value model of the converter is derived and used for insight and analysis of the converter operation. Detailed simulations of the four-level drive system demonstrate the effectiveness of the proposed system.

Meeting Name

29th Annual Conference of the IEEE Industrial Electronics Society, IECON '03. (2003: Nov. 2-6, Roanoke, VA)


Electrical and Computer Engineering

Keywords and Phrases

DC-DC Power Convertors; Capacitor Voltage Balancing; Capacitors; Converter Average-Value Model; Dc Capacitor Bank Voltage Regulation; Diode-Clamped Inverter; Diodes; Drive System; Drives; Four-Level Crossing Dc/Dc Converter; Front-End Converter; Invertors; Voltage Boost; Voltage Control

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2003 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Nov 2003