Bifurcation in parallel-connected buck converters under current-mode control

This paper studies a system of parallel-connected dc/dc buck converters under current-mode control. The effects of variations of the reference current are studied. It has been observed that the system exhibits low-frequency bifurcation behaviour while period-doubling at switching frequency is suppre...

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Bibliographic Details
Main Authors: Iu, H.H.C., Tse, C.K., Dranga, O.
Format: Conference Proceeding
Language:English
Subjects:
Bifurcation
Buck converters
Concurrent computing
Control systems
DC-DC power converters
Inductors
Interleaved codes
Power electronics
Switching converters
Switching frequency
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Summary:This paper studies a system of parallel-connected dc/dc buck converters under current-mode control. The effects of variations of the reference current are studied. It has been observed that the system exhibits low-frequency bifurcation behaviour while period-doubling at switching frequency is suppressed. Extensive simulations are used to capture the behaviour. Time-domain waveforms, stroboscopic maps and trajectories are shown. The paper reveals the drastic alteration of bifurcation behaviour of dc/dc converters due to subtle coupling.
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2005.1465618