Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10703
Title: Boundaries between fast- and slow-scale bifurcations in parallel-connected buck converters
Authors: Huang, Y
Iu, HHC
Tse, CK 
Keywords: Bifurcation
Parallel-connected dc/dc converters
Stability boundary
Issue Date: 2008
Publisher: John Wiley & Sons
Source: International journal of circuit theory and applications, 2008, v. 36, no. 5-6, p. 681-695 How to cite?
Journal: International journal of circuit theory and applications 
Abstract: This paper studies a system of parallel-connected dc/dc buck converters under master-slave current sharing and proportional-integral (PI) PWM control. Two distinct types of bifurcations can be identified. Depending on the value of the integral control time constant, the system exhibits either a slow-scale bifurcation (Neimark-Sacker bifurcation) or a fast-scale bifurcation (period doubling). Extensive simulations are used to capture the behaviour. Trajectories and Poincare sections before and after these bifurcations are shown. The boundaries between these two types of bifurcations are located. In particular, the parameter spaces of the controllers for these bifurcations are totally different. A detailed analysis is performed, based on examining the Jacobian and characteristic multipliers of the describing discrete-time map.
URI: http://hdl.handle.net/10397/10703
ISSN: 0098-9886
EISSN: 1097-007X
DOI: 10.1002/cta.454
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