Jiacheng Sun Wenli Yao Xiaobin Zhang Xinyue Zhang Yongheng Yang All-pass Filers Based Active Damping for LCL Filters with Converter Current Feedback Control. 3375-3380 2019 IECON https://doi.org/10.1109/IECON.2019.8927735 conf/iecon/2019 db/conf/iecon/iecon2019.html#SunYZZY19