Chaos control for the Buck-Boost converter under current-mode control

Abstract

Based on chaotic phenomena of the Buck-Boost converter under current-mode control, according to the reference current ref I which works as a bifurcation parameter, the poincare section diagram, the switch logic diagram and the bifurcation map are studied by applying the discrete map; moreover，by employing a nonlinear feedback controller which is a piecewise-quadratic function in the form of x x in the chaotic Buck-Boost converter, chaos control of the Buck-Boost converter is achieved. The numerical simulation shows that this method is suitable for the stability control of diversified periodic orbits by adjusting the feedback gain in the nonlinear feedback controller.

Effect of Circuit Parameters on Stability of Voltage-fed Buck-Boost Converter in Discontinuous Conduction Mode

“…The methods adopted can be approximately divided into two kinds: numerical method and approximate model analytical method. In the former, the equations characterizing nonlinear behaviors of converters are solving by numerical iterative algorithms [13]. In the latter, the analytical solutions are obtained by making some approximate disposal [14].…”