DocumentCode :
3212131
Title :
Adaptive voltage regulation and equal current distribution of parallel-buck DC-DC converters using backstepping sliding mode control
Author :
Lin, Shui-Chun ; Tsai, Ching-Chih
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan
Volume :
2
fYear :
2004
fDate :
2-6 Nov. 2004
Firstpage :
1018
Abstract :
This paper develops a novel methodology for voltage regulation and equal current distribution of parallel-buck DC-DC converters. Such converters are modeled as linear averaged state-space system models with adjustable loads. Two measurements, such as output voltage and inductor current, are used to accomplish the design of an adaptive backstepping sliding mode controller for the parallel-buck DC-DC converters. Based on the singular perturbation method, a reduced order model is derived in order to show that the effect of equivalent series resistance (ESR) of the capacitor can be ignored and the parallel converters can be well approximated by the reduced order model. With the reduced order model, an adaptive sliding mode control utilizing backstepping approach is proposed to control the parallel-buck DC-DC converters. This proposed control method has been verified by computer simulations, and has also been proven capable of giving satisfactory voltage regulation performance under input voltage variations and load changes.
Keywords :
DC-DC power convertors; adaptive control; control engineering computing; current distribution; electric current control; power engineering computing; reduced order systems; state-space methods; variable structure systems; voltage control; adaptive voltage regulation; backstepping sliding mode control; equal current distribution; equivalent series resistance; inductor current measurement; linear averaged state-space system model; output voltage measurement; parallel-buck DC-DC converter; reduced order model; singular perturbation method; Adaptive control; Backstepping; Current distribution; Current measurement; DC-DC power converters; Load modeling; Programmable control; Reduced order systems; Sliding mode control; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
Type :
conf
DOI :
10.1109/IECON.2004.1431714
Filename :
1431714
Link To Document :
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