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Calculation and stability investigation of periodic steady states of the voltage controlled Buck DC-DC converter

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2 Author(s)
Papafotiou, G.A. ; Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Greece ; Margaris, N.I.

A new method for investigating the complex dc-dc converters dynamics is suggested in this paper. The method is based on the formulation of a nonlinear difference equation with respect to the duty cycle. This equation embodies the nonlinear and discrete-time characteristics of dc-dc converters and allows both the calculation of normal and subharmonic steady states and their local stability analysis. The method is presented through the analysis of a voltage controlled Buck dc-dc converter.

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Power Electronics, IEEE Transactions on  (Volume:19 ,  Issue: 4 )