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 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.

• Type: Conference
• Year: 2005
• Where: ISCAS
• Authors: C. K. Michael Tse, Octavian Dranga, Herbert H. C. Iu
• Keywords: Bifurcation Behaviour, Dc/dc Buck Converters, ISCAS 2005, Low-frequency Bifurcation Behaviour