Title :
Controller design method for a cascaded converter system comprised of two DC-DC converters considering the effects of mutual interactions
Author :
Ahmadi, Reza ; Ferdowsi, Mehdi
Author_Institution :
Electr. & Comput. Eng. Dept., Missouri Univ. of Sci. & Technol., Rolla, MO, USA
Abstract :
This work analyzes the stability conditions of a cascaded converter system comprised of two dc-dc converters and proposes a new controller design procedure for the two converters considering their dynamic interactions. First, it introduces a single converter small-signal model and its mathematical representation and derives the required transfer functions from it. Next, it uses the single converter model to reach the cascaded converter system model and derives the principal equations for analyzing stability and controller design. Finally, it proposes a new design method based on the analysis of the derived equations. The simulation and experimental results are also provided, which verify the design procedure.
Keywords :
DC-DC power convertors; control system synthesis; mathematical analysis; stability; transfer functions; DC-DC converters; cascaded converter system model; controller design method; mathematical representation; single converter small-signal model; stability; transfer functions; Design methodology; Load modeling; Mathematical model; Power system stability; Stability analysis; Transfer functions; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
DOI :
10.1109/APEC.2012.6166072