Title :
Large-signal analysis and control of buck converters loaded by DC-DC converters
Author :
Rivetta, C. ; Williamson, Geoffrey A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL, USA
Abstract :
The dynamic behavior of the buck converter feeding downstream DC-DC converters is studied in this paper. DC-DC converters acting as a load are modeled as constant power loads except at low voltage, where the behavior of the start-up circuitry is included. A comprehensive large-signal analysis of a buck converter including over-current protection and feeding the described load is performed. This paper addresses the transient process of the converter´s start-up and turn on/off of loads consisting of DC-DC converters and gives design considerations to assess performance and stability robustness of a simple proportional-derivative controller.
Keywords :
DC-DC power convertors; PD control; load (electric); overcurrent protection; robust control; transient analysis; DC-DC converters; buck converter control; large-signal analysis; over-current protection; power loads; proportional-derivative controller; stability robustness; transient process; Buck converters; Circuit stability; DC-DC power converters; Load modeling; Low voltage; PD control; Performance analysis; Protection; Robust control; Robust stability;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355126
