中文摘要：

针对LC型单相逆变器在轻载时严重欠阻尼，系统存在振荡的问题，使用有源阻尼方法抑制该振荡，采用谐振控制器实现对逆变器输出电压的无静差跟踪。通过分析控制参数对系统稳定性及动静态性能的影响．得到控制参数的取值范围，再结合工程应用选取合适参数，无需反复试凑，能有效抑制系统振荡，并使得系统具有良好的动静态性能。仿真和实验结果表明所提参数设计方法有效。

英文摘要：

Single-phase inverter with LC filter is extremely under-damping at light loads.A resonant problem exists in the system which can be solved by the active damping method.It can achieve zero steady state error while tracking output voltage by using resonant controller.The effects of controller parameters on the stability and properties of the system are analyzed.According to the analysis result, a method is proposed to obtain the entire parameter region that meets the system requirements.Based on this parameter region and specific application requirements,the appropriate parameters could be properly designed without hit and trial method.The proposed method can yield a proper controller which can ensure an effectively damped and highly robust system.The simulation and experimental results verify the effectiveness of the proposed design method.