采用重复控制器的逆变电源数字控制方案

重复控制理论是抑制谐波干扰的一种有效方法，但在逆变电源系统中，由于模型的不精确，常规方法的基于完美对消思想设计的重复控制器不适用于电源系统，针对不精确的模型，本文提出了基于部分对消思想的重复控制器设计，文中首先分析了重复控制器对谐波的抑制机理，并证明了它的稳定性和收敛性，其次给出了控制器设计的具体步骤，并给出了相应的仿真和实验验证。

Design of Repetitive Controller for Inverter

Repetitive control (RC) is a good scheme to improve the voltage waveform under a nonlinear load. But the conventional RC design method is not fit for inverters, because the perfect cancellation between the controller and the servo plant is impossible. For an inaccurate mathematical model of inverter, a new and effective RC design method,i.e. the limited cancellation method is proposed. The principle of RC is firstly described, the stability and the convergence are proven by the small gain theory. Secondly, the design of a repetitive controller for inverter is shown. Finally, simulational and experimental results prove the validity of RC design.