Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14703
Title: Control of bifurcation in current-programmed dc/dc converters: An alternative viewpoint of ramp compensation
Authors: Lai, YM 
Tse, CK 
Chow, MHL 
Issue Date: 2001
Source: Circuits, systems and signal processing, 2001, v. 20, no. 6, p. 695-707
Abstract: This paper reexamines the conventional current-mode control strategy as applied to dc/dc converters in the light of "avoiding bifurcation." This alternative viewpoint permits convenient selection of parameter values to guarantee stable operation. The traditional slope compensation is viewed as a means to keep the system sufficiently remote from the first bifurcation point. It is shown that excessive bifurcation clearance is accompanied by undesirably slow dynamical response. A variable ramp compensation is proposed to dynamically adjust the slope magnitude so that the system is kept clear of bifurcation, yet responds sufficiently fast during transients. The results have been confirmed by experimental measurements.
Keywords: Bifurcation control
Current-mode control
Dc/Dc converters
Ramp compensation
Publisher: Birkhäuser
Journal: Circuits, systems and signal processing 
ISSN: 0278-081X
EISSN: 1531-5878
DOI: 10.1007/BF01270937
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