【摘要】 以Cuk PFC变换器为主拓扑,提出滑模变结构电流内环控制与PI调节器电压外环控制相结合的综合控制系统,以实现变换器高性能的单位功率因数校正功能。仿真研究结果表明,这种控制系统设计不仅有滑模控制动态性能好、鲁棒性强的优点还有PI调节器稳定性好的优点。更多还原

【Abstract】 Based on Cuk converter as the main topology, a control system design with sliding-mode variable-structure inner current loop control and outer voltage loop PI control was designed to achieve high performance unit power factor correction. Simulation results prove that the control structure possesses good dynamic characteristics and strong robustness with sliding-mode control and good stability from PI adjuster.更多还原