Summary

Proceedings of the 2012 International Symposium on Nonlinear Theory and its Applications

2012

Session Number:C3L-A

Session:

Number:703

Period Doubling Bifurcations in a Multiple-Sampled Digitally Controlled Buck Converter

Mark Bradley,  Eduard Alarcon,  Orla Feely,  

pp.703-706

Publication Date:

Online ISSN:2188-5079

DOI:10.15248/proc.1.703

PDF download (1.6MB)

Digital control in switching power converters has seen a surge in interest in recent years, however digital control suffers several drawbacks in comparison to analog control, including quantization-induced limit cycles and a reduced control bandwidth. Multiple-sampled digital control aims to alleviate the bandwidth issue by sampling the output state variables several times per switching period. We investigate the appearance and co-existence of period-doubling behaviour and quantization-induced limit cycles in this circuit and use the Filippov Method to predict the approximate bifurcation points in the circuit.

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