Modeling Closed-Loop Input and Output Impedances of DC-DC Power Converters Operating inside DC Distribution Systems
This paper derives closed-loop input and output impedances of a number of dc-dc power electronic converters when operating in a dc distribution network. The derived impedances can be used for stability analysis and control design for dc distribution networks. In this paper, first the small-signal model of a power converter operating in a dc power system is introduced and the open-loop transfer functions are derived. Next, the closed-loop model of the converter is assembled based on the open-loop model and the type of the control scheme. Then, the closed-loop impedances are derived from the resulting closed-loop model. Finally, the derived impedances are verified using an experimental prototype converter.
R. Ahmadi and M. Ferdowsi, "Modeling Closed-Loop Input and Output Impedances of DC-DC Power Converters Operating inside DC Distribution Systems," Proceedings of the 29th Annual IEEE Applied Power Electronics Conference and Exposition (2014, Fort Worth, TX), pp. 1131-1138, Institute of Electrical and Electronics Engineers (IEEE), Mar 2014.
The definitive version is available at https://doi.org/10.1109/APEC.2014.6803449
29th Annual IEEE Applied Power Electronics Conference and Exposition (2014: Mar. 16-20, Fort Worth, TX)
Electrical and Computer Engineering
Keywords and Phrases
Transfer Functions; Mathematical Model; Stability Analysis; Power System Stability; Impedance; Voltage Control; Load Modeling; Closed Loop Systems; DC-DC Power Convertors; Distribution Networks; Electric Impedance
International Standard Book Number (ISBN)
International Standard Serial Number (ISSN)
Article - Conference proceedings
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01 Mar 2014