Title :
Bifurcation in parallel-connected buck converters under current-mode control
Author :
Iu, H.H.C. ; Tse, C.K. ; Dranga, O.
Author_Institution :
Sch. of Electr., Electron. & Comput. Eng., Univ. of Western Australia, WA, Australia
Abstract :
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.
Keywords :
DC-DC power convertors; bifurcation; current-mode circuits; current-mode control; dc/dc buck converters; low-frequency bifurcation; parallel-connected buck converters; period doubling; reference current variations; stroboscopic maps; subtle coupling; time-domain waveforms; trajectories; Bifurcation; Buck converters; Concurrent computing; Control systems; DC-DC power converters; Inductors; Interleaved codes; Power electronics; Switching converters; Switching frequency;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465618
