基于重复控制和无差拍控制的逆变电源数字控制技术研究

随着DSP技术的发展，数字控制在逆变电源控制领域的应用受到人们的关注。逆变电源中因非线性负载等因素引起的干扰具有周期性，而这些干扰导致输出波形的畸变具有重复性，采用重复控制策略可以消除输出电压谐波，但该控制方法的动态响应慢。无差拍控制具有瞬时响应快，精度高等特点。文中将重复控制和无差拍控制相结合用于逆变电源数字控制系统中，得到更为完善的逆变电源控制策略。仿真结果表明，由该方法设计的控制器用于逆变电源系统具有输出波形好，动态响应快，适应负载的能力强等优点。

Digital Inverter Based on Repetitive Control and Deadbeat Control Techniques

With the development of DSP Technology, digital controllers are widely used in uninterruptible power supply inverters. Non-linear load of inverter causes period distort of output voltage, and it can be eliminate by repetitive control. But the response of repetitive control is slow. Deadbeat control has good performance at transient state. This paper presents a hybrid control scheme based on repetitive control and deadbeat control to improve both transient and steady state responses of single-phase inverter. The simulation results verify the feasibility of the proposed control strategy.