Application of bifurcation theory to current-mode controlled parallel-connected DC–DC boost converters with multi bifurcation parameters

摘要

This work describes the bifurcational behavior of a modular peak current-mode controlled DC–DC boost converter with multi bifurcation parameters. The parallel-input/parallel-output converter consists of two identical boost circuits and operates in the continuous-current conduction mode (CCM). A nonlinear mapping in closed form is derived and bifurcation diagrams are generated using MATLAB. A comparison is made between the modular converter diagrams with those of the single boost converter. The effect of introducing mutual coupling between the inductors of the constituent modules is also addressed. Results are verified using the circuit analysis package PSPICE.