Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid

Chunming Tu; Jiayuan Gao; Fan Xiao; Qi Guo; Fei Jiang

doi:10.17775/CSEEJPES.2021.03560

欢迎来到能源电力期刊网！

English Version 期刊登录

您当前的位置：

首页 >

文章列表页 >

Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid

Regular Papers | 更新时间：2026-10-15

- Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid
- Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid
- 中国电机工程学会电力与能源系统学报(英文) 2025年11卷第4期页码：1755-1769
- 作者机构：
  
  1. College of Electrical and Information Engineering, Hunan University,Changsha,China
  2. School of Electrical and Information Engineering, Changsha University of Science and Technology,Changsha,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.03560
  中图分类号：
- 纸质出版：2025-07-01
- 稿件说明：
移动端阅览
Chunming Tu, Jiayuan Gao, Fan Xiao, 等. Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(4):1755-1769.

Chunming Tu, Jiayuan Gao, Fan Xiao, et al. Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid[J]. CSEE Journal of Power and Energy Systems, 2025, 11(4): 1755-1769.
Chunming Tu, Jiayuan Gao, Fan Xiao, 等. Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(4):1755-1769. DOI： 10.17775/CSEEJPES.2021.03560.

Chunming Tu, Jiayuan Gao, Fan Xiao, et al. Impedance-Phase and Magnitude Control Method to Improve Stability of Grid-Connected Inverters in Weak Grid[J]. CSEE Journal of Power and Energy Systems, 2025, 11(4): 1755-1769. DOI： 10.17775/CSEEJPES.2021.03560.

摘要

Abstract

Grid impedance and phase-locked loop (PLL) are critical factors for the stability of the grid-connected inverters (GCIs) in a weak grid. They are the positive feedback control loops formed by PLL in the GCI with grid impedance. It is prone to GCI instability

especially in the case of the higher PLL bandwidth. A novel impedance-phase and magnitude control strategy is proposed to improve stability of GCI with different grid impedance. Moreover

a detailed design of control loop and parameter calculation for the impedance-phase and magnitude control strategy are introduced. First

PLL output impedance is reshaped to broaden the frequency range of the GCI phase-frequency characteristic curve above the −90° line towards the low-frequency band. In addition

current loop output impedance is reshaped to maintain the phase margin (PM) of the GCI near to 45°. Meanwhile

the magnitude of GCI output impedance is also increased significantly. Stability of the GCI in a weak grid is enhanced by adopting the proposed control strategy. Simulation and experimental results verify the analysis and the proposed method.

关键词

Keywords

references

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

Dynamic Interaction and Stability Analysis of Grid-following Converter Integrated Into Weak Grid

Dominant Instability Mechanism and Stability Stationary Points of Grid-Forming Converter Under Stiff Grid

Stability Improvement Method for Multi-Converter Distribution Systems Based on Impedance Sensitivity

Multiple Renewable Short-Circuit Ratio for Assessing Weak System Strength with Inverter-Based Resources

Reduced-order modeling and dynamic stability analysis of MTDC systems in DC voltage control timescale