Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method

Meng Huang; Yangjian Ling; Han Yan; Xikun Fu; Xiaoming Zha; Herbert Ho-Ching Iu

doi:10.17775/CSEEJPES.2022.05850

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Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method

Regular Papers | 更新时间：2026-03-25

- Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method
- Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method
- 中国电机工程学会电力与能源系统学报(英文) 2026年12卷第1期页码：282-293
- 作者机构：
  
  Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, School of Electrical Engineering and Automation, Wuhan University,Wuhan,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2022.05850
  中图分类号：
- 纸质出版：2026
- 稿件说明：
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Meng Huang, Yangjian Ling, Han Yan, 等. Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method[J]. 中国电机工程学会电力与能源系统学报(英文), 2026,12(1):282-293.

Meng Huang, Yangjian Ling, Han Yan, et al. Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method[J]. CSEE Journal of Power and Energy Systems, 2026, 12(1): 282-293.
Meng Huang, Yangjian Ling, Han Yan, 等. Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method[J]. 中国电机工程学会电力与能源系统学报(英文), 2026,12(1):282-293. DOI： 10.17775/CSEEJPES.2022.05850.

Meng Huang, Yangjian Ling, Han Yan, et al. Synchronization Stability Analysis of Multi-VSC Grid-Connected System via Multi-Scale Method[J]. CSEE Journal of Power and Energy Systems, 2026, 12(1): 282-293. DOI： 10.17775/CSEEJPES.2022.05850.

摘要

Abstract

In a multiple voltage source converter (VSC) system

the nonlinear characteristics of phase-locked loops (PLLs) and their interactions have a significant influence on the synchronization stability of converters. In this paper

these influences are investigated from the perspective of the time domain. First

a novel time-domain model of the multi-VSC system is obtained by using a multi-scale method. On this basis

a stability criterion is proposed to assess the synchronization stability of the system. Then

the accuracy of the time-domain model and its stability criterion in various conditions are discussed. Moreover

the negative impact of the interaction on the system is quantified. Finally

the above theoretical analysis is also verified in the controller hardware-in-the-loop (CHIL) experiments.

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