论文部分内容阅读
功率开关的动作使得三相有源电力滤波器(active power filter,APF)成为一种典型切换仿射系统。因此提出了一种基于切换仿射模型和切换系统全局稳定理论的三相APF的控制方法。首先建立三相APF切换仿射模型,为各个切换子系统选取合适的公共李亚普诺夫(Lyapunov)函数,据此划分各个子系统的运行域,构造基于状态反馈的切换规则保证系统在切换控制下二次稳定,从而实现了电流和电压的统一控制。最后仿真和实验结果与理论分析具有良好的一致性。
The action of the power switch makes the three-phase active power filter (APF) a typical switching affine system. Therefore, a control method of three-phase APF based on switching affine model and global stability theory of switching system is proposed. Firstly, affine model of three-phase APF switch is established, suitable public Lyapunov function is selected for each switch subsystem, and the operation domain of each subsystem is divided accordingly to construct a switch rule based on state feedback to ensure that the system under the switch control Secondary stability, in order to achieve a unified control of current and voltage. The final simulation and experimental results are in good agreement with the theoretical analysis.