Improving Performance of a DC-DC Cascaded Converter System Using an Extra Feedback Loop
This paper introduces the extra feedback method as a technique to improve the performance of a cascaded converter system and stabilize its operation. In this paper, first, the block diagram representation of the small-signal model of a single converter is presented. The open-loop and closed-loop transfer functions of this converter are provided in this stage as well. Next, the presented model is expanded to the block diagram model of a cascaded converter system comprised of two dc-dc converters. Then, the extra feedback method which is the main contribution of the paper is introduced. Some design guidelines for applying this method to an experimental cascaded converter system are provided in this part as well. Finally, some experimental results are provided to verify the theoretical outcomes.
R. Ahmadi and M. Ferdowsi, "Improving Performance of a DC-DC Cascaded Converter System Using an Extra Feedback Loop," Proceedings of the 5th Annual IEEE Energy Conversion Congress and Exposition (2013, Denver, CO), pp. 5511-5517, Institute of Electrical and Electronics Engineers (IEEE), Sep 2013.
The definitive version is available at http://dx.doi.org/10.1109/ECCE.2013.6647449
5th Annual IEEE Energy Conversion Congress and Exposition (2013: Sep. 15-19, Denver, CO)
Electrical and Computer Engineering
Keywords and Phrases
Block Diagrams; Block-Diagram Model; Cascaded Converters; Closed Loop Transfer Function; Feed-Back Loop; Improving Performance; Open-Loop; Small Signal Model; Energy Conversion; DC-DC Converters; Feedback Loop; Transfer Functions; Stability Analysis; Power System Stability; Voltage Control; Impedance; Circuit Stability; Feedback; DC-DC Power Convertors
International Standard Book Number (ISBN)
International Standard Serial Number (ISSN)
Article - Conference proceedings
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