Research on Triple Interleaved Bidirectional DC/DC Converter Based on Second-Order Linear Active Disturbance Rejection

The traditional PI controller has a considerable ability to improve the robustness of the interleaved dc/dc converter drive. However, the PI control strategy has its specific antidisturbance range. To further expand the antidisturbance range and improve the robustness to disturbance, a second-order linear active disturbance rejection control (LADRC) strategy is proposed to achieve high-performance current-sharing and antidisturbance capabilities of the triple interleaved bidirectional dc/dc converter in steady and dynamic states. The simulation and experimental results show that compared with the traditional PI control, the current-sharing strategy based on second-order LADRC has better rapidity, robustness, and adaptability.