Study of nonlinear behaviour and chaotic control in parallel-connection buck converters

The article studies on the parallel-connected buck converter under master-slave operation. Firstly, deduces the dynamical equations from the circuit structure, and gains the bifurcation and chaos diagram under the different parameters. Then, open out the reason of bifurcation and chaos by simple theoretical analysis. On basis of it, some chaos control method called phase-shift are putted forward, which are analysed with the mapping method that will map the time variable to some other parameter. The control results are validated by contrasting the power spectrum before and after the control method of phase-shift is adopted.