Phase reshaping via all-pass filters for robust LCL-filter active damping

• Main Authors: Yao, Wenli, Yang, Yongheng, Xu, Yan, Blaabjerg, Frede, Liu, Shuyong, Wilson, Gary
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2022
• Subjects: Engineering::Electrical and electronic engineering; Active Damping; All-Pass Filter
• Online Access: https://hdl.handle.net/10356/160921
• Institution: Nanyang Technological University

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 ident...