摘要
以 AC/DC Boost 变换器为主拓扑,提出基于 PWM 的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。可以使开关切换采用固定的开关频率,消除了传统滑模控制因切换频率不固定带来缺陷。仿真和研究结果表明,这种控制系统设计兼有滑模控制动态性能、鲁棒性好与 PI 调节器稳定性好的优点。
Taking AC/DC boost converter as the main topology, this paper presents a complex control system design that combine PWM-based sliding-mode inner current loop control with outer voltage loop PI control to achieve high performance unit power factor correction. Simulation results proved that the control structure possessed the good dynamic characteristics and strong robustness came from sliding-mode control and good stability from PI adjuster. In addition, it can eliminate the fault brought by the non fixed-frequency switch of traditional sliding mode control.
出处
《电气自动化》
北大核心
2008年第6期42-44,共3页
Electrical Automation
基金
国家"863"高技术基金资助项目(2006AA05Z211)
