Buck三电平变换器中滑模控制应用研究

滑模变结构控制具有鲁棒性强，动态品质好等优点。文中以Buck三电平为例论述利用滑模变结构的理论分析，设计了Buck三电平变换器的方法，详细讨论了滑模面的选取对系统性能的影响，并进行了等效控制、稳定性和存在性的证明。最后将滑模控制buck三电平与传统的PWM控制Buck三电平变换器进行了仿真分析和比较。研究结果验证了滑模变结构控制策略可以大大提高变换器的鲁棒性和动态品质。

The Application of Sliding-Mode Control in Buck Three-Level Converter

Sliding-mode control has the advantages of robustness and good dynamics performance, so this paper take three-level converters for example to treatise the sliding-mode control and the design of sliding-mode control Buck three-level converter , particularly discussing the effect of system performance of sliding-mode control surface design , equivalent control stability and existence proof. In the end, simulation testing of sliding mode control buck TL converter and tradition svability PWM Buck TL converter were carried out in order to analyze and compare, analysis verify that robustness and dynamics performance are improved greatly in the sliding mode control Buck TL converter.