Title :
QFT based robust controller design for a DC-DC switching power converter
Author :
Altowati, Ali ; Zenger, Kai ; Suntio, Teuvo
Author_Institution :
Helsinki Univ. of Technol., Espoo
Abstract :
In this paper, a quantitative feedback theory (QFT) was applied successfully to design a robust controller for a DC-DC buck converter operating in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The controller is designed to provide optimum attenuation of the load disturbances in spite of practical limitations on the achievable closed-loop performance and in the presence of other design constraints including closed-loop tracking and robust stability. The derived analytical results are verified by computer simulation of a voltage-mode (VM) controlled buck converter.
Keywords :
DC-DC power convertors; closed loop systems; control system synthesis; robust control; voltage control; DC-DC switching power converter; QFT-based robust controller design; closed-loop performance; closed-loop tracking; continuous conduction mode; discontinuous conduction mode; load disturbances; optimum attenuation; quantitative feedback theory; robust stability; voltage-mode controlled buck converter; Attenuation; Buck converters; Computer simulation; DC-DC power converters; Feedback; Robust control; Robust stability; Switching converters; Virtual manufacturing; Voltage control; DC-DC Converter; Quantitative feedback theory; robust stability; voltagemode-control;
Conference_Titel :
Power Electronics and Applications, 2007 European Conference on
Conference_Location :
Aalborg
Print_ISBN :
978-92-75815-10-8
Electronic_ISBN :
978-92-75815-10-8
DOI :
10.1109/EPE.2007.4417775
