Instability and bifurcation in parallel-connected buck converters under a master-slave current sharing scheme

This paper describes the bifurcation phenomena of a system of parallel-connected DC/DC buck converters. The results provide useful information for the design of stable current sharing in a master-slave connection configuration. Computer simulations are performed to capture the effects of variation o...

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Bibliographic Details
Main Authors: Iu, H.H.C., Tse, C.K.
Format: Conference Proceeding
Language:English
Subjects:
Bifurcation
Buck converters
Control systems
DC-DC power converters
Force control
Master-slave
Pulse width modulation
Pulse width modulation converters
Switches
Voltage control
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Description
Summary:This paper describes the bifurcation phenomena of a system of parallel-connected DC/DC buck converters. The results provide useful information for the design of stable current sharing in a master-slave connection configuration. Computer simulations are performed to capture the effects of variation of some chosen parameters on the qualitative behaviour of the system. It is found that while variation of the voltage feedback gains leads to standard period-doubling bifurcation, variation of the current sharing ratio leads to border collision bifurcation. Analysis is presented to establish the possibility of the bifurcation phenomena and to locate the current sharing ratio at which border collision occurs.
ISSN:0275-9306
2377-6617
DOI:10.1109/PESC.2000.879903