滑模控制双向Buck变换器的研究

Sliding Mode Controller for the Bi-Directional Buck Converter

针对滑模控制策略快速动态响应和良好的稳态特性,提出了基于滑模控制的双向同步Buck电路电感电流反向连续工作方式.并对滑模控制进行了深入分析,讨论了滑模的存在条件,确定了滑模面方程,结合滞环控制设计了滞环滑模控制器.滑模控制方案能有效克服系统参变量变化和外部扰动,充分发挥了快速响应和鲁棒性强的优点.最后给出了实验结果验证上述分析.

In this paper, bi-directional synchronous rectifying Buck circuit based on sliding mode control is presented. The bi-directional Buck circuit is design to operate in reversing inductor current. The existence and stability of the sliding mode control are particularly analyzed. Sliding mode controller combined with hysteresis block is designed. The sliding mode control scheme is robust with respect to both external disturbances and variations on the load and input voltage. The experimental results are included in the paper to validate the analysis.