Title :
Nonlinear discrete-time analysis of the fixed frequency switch-mode DC-DC converters dynamics
Author :
Papafotiou, Georgios A. ; Margaris, N.I.
Author_Institution :
Autom. Control Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland
fDate :
6/1/2005 12:00:00 AM
Abstract :
This brief suggests a modified approach to the discrete-time analysis of fixed frequency switch-mode dc-dc converters. The method presented here is based on the formulation of a nonlinear difference equation with respect to the duty cycle, which describes the closed-loop behavior of the system considered. The difference equation allows the complete examination of the system´s steady state during normal operation, as well as in the case where subharmonic oscillations or chaos are developed.
Keywords :
DC-DC power convertors; PWM power convertors; closed loop systems; difference equations; discrete time systems; nonlinear differential equations; oscillations; switched mode power supplies; DC-DC power conversion; closed loop behavior; fixed frequency switch-mode DC-DC converters; nonlinear difference equation; nonlinear discrete-time analysis; pulsewidth modulation; steady state system; subharmonic oscillations; switched systems; Chaos; Difference equations; Frequency conversion; Power conversion; Pulse modulation; Space vector pulse width modulation; Steady-state; Switches; Switching converters; Voltage control; DC–DC power conversion; discrete-time systems; pulsewidth modulation; switched systems;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2005.848996
