Lookup NU author(s): Dr Damian Giaouris,
Professor Soumitro Banerjee,
Dr Bashar Zahawi,
Professor Volker Pickert
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Interleaved boost converters (IBCs) are used when energy conversion is required at high current levels. Such converter systems may undergo various nonlinear phenomena which can affect their performance adversely. In this paper, we study an IBC and demonstrate the first instability through a Neimark–Sacker bifurcation, resulting in a torus. An analysis based on the calculation of the monodromy matrix reveals that the torus has a rather strange form as the complex Floquet multipliers that became unstable have a real value close to −1. We show that further variation in a parameter can result in novel nonlinear phenomena where the torus itself folds and grazes a switching manifold, resulting in a ‘wobbling’ of the closed loop that represents the torus in discrete time. Numerical and analytical results validate our work.
Author(s): Giaouris D, Banerjee S, Stergiopoulos F, Papadopoulou S, Voutetakis S, Zahawi B, Pickert V, Abusorrah A, Al Hindawi M, Al-Turki Y
Publication type: Article
Journal: International Journal of Circuit Theory and Applications
Online publication date: 11/03/2013
Acceptance date: 26/01/2013
Print publication date: 01/10/2014
ISSN (print): 0098-9886
ISSN (electronic): 1097-007X
Publisher: John Wiley & Sons Ltd.
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