Dynamic Response Improvement in a Three-Level Buck Type Converter

Abstract

Compared to the conventional Buck converter, the equivalent switching frequency in the three-level Buck converter (TL-Buck) is doubled. This leads to a smaller output inductance required for the same inductor current ripple. Therefore, the dynamic response will be faster than that of the conventional Buck converter. In this paper, to further improve the dynamic performance, the current feed-forward control scheme is applied to the TL-Buck converter. To validate the effectiveness of the proposed topology and controller, both Matlab/Simulink based simulation and experimental results are presented. The main advantages of the proposed approach include faster dynamic response, simple topology configuration, and simple controller implementation.

Meeting Name

2nd Annual IEEE Energy Conversion Congress and Exposition (2010: Sep. 12-16, Atlanta, GA)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Buck Converters; Controller Implementation; Dynamic Performance; Feed-Forward Control Scheme; Inductor Currents; MATLAB/Simulink; Overshoot/Undershoot Voltage; Recovery Time; Simple Topology; Three-Level; Dynamic Response; Energy Conversion; HVDC Power Transmission; Topology; DC-DC Converters

International Standard Book Number (ISBN)

978-1424452866

International Standard Serial Number (ISSN)

2329-3721; 2329-3748

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Sep 2010

Link to Full Text

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