电力系统及其自动化学报2026，Vol.38Issue(5)：35-43,9.DOI:10.19635/j.cnki.csu-epsa.001703
改进定时扰动观测器的三电平PFC自适应滑模控制策略
Adaptive Sliding Mode Control Strategy for Three-level PFC Based on Improved Fixed-time Disturbance Observer
摘要
Abstract
To enhance the robustness of a system under complex disturbances such as voltage fluctuations and load jumps on the grid-side,an adaptive sliding mode control scheme based on an improved fixed-time disturbance observer is proposed in this paper,which uses a single-phase bridgeless three-level power factor correction(PFC)circuit.With the adoption of an improved fixed-time disturbance observer instead of a traditional extended state observer,the accu-rate estimation and compensation of system disturbances can be achieved.In addition,a dynamic sliding mode control-ler based on an adaptive exponential convergence law is put forward,which dynamically adjusts the switching gain to ef-fectively suppress the inherent chattering of sliding mode control while significantly improving the robustness of the sys-tem with respect to parameter changes,grid-side voltage fluctuations and load jumps.Through simulation experiments and a comparison with traditional control methods,results show that the adaptive sliding mode control strategy with the improved fixed-time disturbance observer can effectively reduce chattering and significantly improve the system's dy-namic response performance and steady-state accuracy,proving the correctness of the proposed control scheme.关键词
功率因数校正/滑模控制/改进定时扰动观测器/自适应指数趋近律/负载跃变Key words
power factor correction(PFC)/sliding mode control/improved fixed-time disturbance observer/adaptive exponential convergence law/load jump分类
信息技术与安全科学引用本文复制引用
向昆,刘惠群,李黄强,申冉,马辉..改进定时扰动观测器的三电平PFC自适应滑模控制策略[J].电力系统及其自动化学报,2026,38(5):35-43,9.基金项目
国家自然科学基金资助项目(52377191) （52377191）
湖北省科技攻关计划资助项目(2024AFB584). （2024AFB584）
