Closed-Loop Input and Output Impedances of DC-DC Switching Converters Operating in Voltage and Current Mode Control
This work derives the closed-loop input and output impedances of three major types of DC-DC converters (Buck, Boost, and Buck-Boost) operating in voltage or current mode control. First, it introduces the small-signal converter model employed to derive the input and output impedances. Next, it reviews open-loop impedances for use in simplifying the expressions developed for closed-loop impedances. It then derives the closed-loop impedances by closing the voltage or current loop (depending on control method) in the converter model. Finally, The validity of the impedances thus derived is verified by simulation.
R. Ahmadi et al., "Closed-Loop Input and Output Impedances of DC-DC Switching Converters Operating in Voltage and Current Mode Control," Proceedings of the 36th Annual Conference of the IEEE Industrial Electronics Society (2010, Glendale, AZ), pp. 2311-2316, Institute of Electrical and Electronics Engineers (IEEE), Nov 2010.
The definitive version is available at https://doi.org/10.1109/IECON.2010.5675123
36th Annual Conference of the IEEE Industrial Electronics Society (2010: Nov. 7-10, Glendale, AZ)
Electrical and Computer Engineering
Keywords and Phrases
Buck-Boost; Closed-Loop; Control Methods; Converter Model; Current Loop; Current Mode Control; DC-DC Switching Converters; Input And Output Impedance; Open Loops; Small Signal; Closed Loop Control Systems; Electric Impedance; Industrial Electronics; Switching Circuits; DC-DC Converters; Converters; Impedance; Mathematical Model; Voltage Control; Leg; Equations; Power System Stability; DC-DC Power Convertors; Impedance Convertors; Switching Convertors
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