In this paper, a four-level DC/DC buck converter is introduced. The primary application for this converter is to regulate the center capacitor voltage in a four-level inverter system. The steady-state and average-value models for the proposed converter are developed and compared in simulation. The converter was constructed in the laboratory and verified on a four-level motor drive system. It was shown that the four-level DC/DC converter provides capacitor voltage balancing and allows higher output voltage utilization from the inverter.

Meeting Name

Conference Record of the 2001 IEEE Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting


Electrical and Computer Engineering

Keywords and Phrases

DC-DC Power Convertors; Average-Value Models; Capacitor Voltage Balancing; Center Capacitor Voltage Regulation; Control System Analysis; Four-Level DC/DC Buck Converter Analysis; Four-Level Inverter System; Four-Level Motor Drive System; Invertor Output Voltage Utilization; Power Capacitors; Steady-State Models; Voltage Control

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2001 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jan 2001