Current-Oriented Phase-Locked Loop Method for Robust Control of Grid-Connected Converter in Extremely Weak Grid

被引:5
作者
Kim, Ki-Hyun [1 ]
Cui, Shenghui [2 ,3 ]
Jung, Jae-Jung [1 ]
机构
[1] Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea
[2] Seoul Natl Univ, Dept Elect & Comp Engn, Seoul 08826, South Korea
[3] Seoul Natl Univ, SNU Elect Power Res Inst, Seoul 08826, South Korea
基金
新加坡国家研究基金会;
关键词
Phase locked loops; Synchronization; Voltage control; Power system stability; Power system dynamics; Reactive power; Vectors; Grid-following (GFL); phase-locked loop (PLL); synchronization; voltage sources converter (VSC); weak grid;
D O I
10.1109/TPEL.2024.3419445
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This letter presents a new phase-locked loop (PLL) control method for enhancing the synchronization stability of grid-following voltage-source converters in very weak grid conditions. This can be conveniently implemented without additional efforts on hardware and retains the existing PLL structure and current controller parameters. The proposed PLL method is competitive and effective for stability in emerging power systems with a high penetration of inverter-based resources. The effectiveness of the proposed method is confirmed through mathematical proofs and down-scaled experiments.
引用
收藏
页码:11963 / 11968
页数:6
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