@inproceedings{778966635af94bd4a86136265491408d,
title = "Delay Optimizing Based Passivity Enhancement of Converter-Side Current Controlled LCL-Type Grid Converters",
abstract = "Converter-side current control has been widely used in LCL-type grid converters due to its cost-effectiveness. However, the converter suffers from instability at the grid impedance variations. To solve the problem, a delay-optimizing method is proposed with proportional capacitor voltage feedforward (CVFF) and proportional converter current feedback (CCFB). The models for the loop gain and the output impedance are analyzed, showing positive gain and increased delay in CCFB, enhancing the passive frequency range while keeping the control bandwidth. A design for the control parameters is carefully presented based on the analysis, and the effectiveness is validated by the simulation and experimental results.",
keywords = "converter-side current control, delay optimization, digital control, grid impedance, passivity",
author = "Zhengyuan Zhou and Zeng Liu and Xujie Wang and Jinjun Liu and Boyang Shen",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 17th IEEE Energy Conversion Congress and Exposition Asia, ECCE-Asia 2025 ; Conference date: 11-05-2025 Through 14-05-2025",
year = "2025",
doi = "10.1109/ECCE-Asia63110.2025.11112474",
language = "英语",
series = "2025 IEEE Energy Conversion Congress and Exposition Asia: Shaping a Greener Future with Power Electronics, ECCE-Asia 2025",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2025 IEEE Energy Conversion Congress and Exposition Asia",
}