Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG

Jingyi Li; Jianjun Yang; Xiaorong Xie; Haozhi Li; Ke Wang; Zhaohui Shi

doi:10.17775/CSEEJPES.2020.03920

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Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG

Regular Papers | 更新时间：2026-10-15

- Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG
- Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG
- 中国电机工程学会电力与能源系统学报(英文) 2024年10卷第5期页码：1955-1964
- 作者机构：
  
  1. Key Laboratory of Far-shore Wind Power Technology of Zhejiang Province, Huadong Engineering Corporation Limited, Power China,Hangzhou,China
  2. Dept. of Electrical Engineering, State Key Lab of Control and Simulation of Power Systems and Generation Equipment, Tsinghua University,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2020.03920
  中图分类号：
- 纸质出版：2024-09-01
- 稿件说明：
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Jingyi Li, Jianjun Yang, Xiaorong Xie, 等. Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(5):1955-1964.

Jingyi Li, Jianjun Yang, Xiaorong Xie, et al. Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG[J]. CSEE Journal of Power and Energy Systems, 2024, 10(5): 1955-1964.
Jingyi Li, Jianjun Yang, Xiaorong Xie, 等. Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(5):1955-1964. DOI： 10.17775/CSEEJPES.2020.03920.

Jingyi Li, Jianjun Yang, Xiaorong Xie, et al. Effect of Multiple Models of Closed-Loop Transfer Functions on Inter-Harmonic Oscillation Characteristics of Grid-Connected PMSG[J]. CSEE Journal of Power and Energy Systems, 2024, 10(5): 1955-1964. DOI： 10.17775/CSEEJPES.2020.03920.

摘要

Abstract

Establishing a suitable closed-loop transfer function model for the grid-connected PMSG system is the key basis in performing inter-harmonic characteristics analysis. Multiple closed-loop transfer functions can be constructed when different components of the converter controller are taken into account. However

the effect of different components of the converter controller on inter-harmonic stability analysis is not clear. In this paper

the complete transfer function

considering different loops

is first given. Based on the complete closed-loop transfer function

the DC-link

PLL and voltage forward-feed are removed step by step to derive different closed-loop transfer functions. The inter-harmonic related poles of different closed-loop transfer functions are further calculated to analyze the effect of closed-loop transfer functions on inter-harmonic characteristics analysis. Finally

by performing time domain simulation

the correctness of the theoretical analysis results is verified. The results show that under the conditions of a weak AC system

each loop of the converter control system will reduce the stability of the inter-harmonic in the sub-synchronous frequency range and influence the inter-harmonic oscillation frequency. The transfer function needs to consider the influence of each loop to accurately calculate the inter-harmonic stability of the system.

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