单相电压源逆变器离散积分滑模控制仿真研究

本文将电感电流和输出电压瞬时值双环控制策略用于单相全桥逆变器设计中。电压环采用了离散积分滑模控制用来提高系统的动态响应和减小负载扰动的影响。参考电感电流根据输出电压的跟踪误差经过滑模控制器调节得到。电流环采用PI控制器对电感电流进行调节。文章在建模的基础上对系统进行了仿真分析,仿真结果证明系统有良好的动静态性能,该控制方法是可行的。

Simulation Research on Discrete-Time Integral Sliding Mode Control for Single-Phase Voltage Inverter

In this paper,Inductor current and output voltage instantaneous feedback dual-loop strategy are adopted for designing the single-phase full bridge voltage inverter.The voltage loop utilizes discrete-time integral sliding mode controller in order to enhance the dynamic response of system and depress the influence of load perturbation.The sliding mode controller utilizes the tracking error of the output voltage to evaluate the reference inductor current.The current loop uses traditional PI controller to regulate the inductor current.The model of system is established under Matlab Environment.The simulation results show that the system has good dynamic and stability performances.So this dual loop strategy is feasible.