Delayed Feedback Control in the Parallel-Connected Boost Converters
JIN Aijuan,XU Dazhuang,CHEN Yi,MA Zhongxue,ZHAO Panpan
Under the peak-current-control of the current mode,nonlinear characteristics of bifurcation and chaos exist in the parallel Boost converter.To eliminate the phenomenon of the chaos in the circuit,a current-delay feedback control strategy is proposed.Based on the accurate discrete mode of the closed parallel system,iterative formulas are derived when the main circuit parameters of the parallel Boost converter change under the current-control mode.The chaos suppression ability and the robustness of current-delay feedback control strategy are verified by both Matlab simulation and the experimental results under different conditions.
