基于全通滤波器的相位重塑以实现鲁棒的LCL滤波器有源阻尼

Active damping is a common way to stabilize the current control of LCL-filtered converters. In this paper, the stable region of -180° phase crossing is first identified within a predefined range of grid impedance and LCL parameter variations. Once the phase of the current control loop is in the identified region, a stabilization control can be attained. Subsequently, digital filters can be adopted...