Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/109619
PIRA download icon_1.1View/Download Full Text
Title: DC-side stability analysis of grid-tied converter with different control modes based on electrical torque analysis
Authors: Zhang, X
Li, Y 
Li, J 
Wu, T
Yang, S
Hao, Z
Issue Date: Mar-2024
Source: IET energy systems integration, Mar. 2024, v. 6. no. 1, p. 31-44
Abstract: The DC-side stability of the grid-tied converter under different control modes is fully investigated using electrical torque analysis. The small-signal model of a single converter connected to an ideal DC bus under various control modes is formulated. Accordingly, the damping and synchronising coefficient contributed by the DC network and controllers of grid-tied converter are separately accessed using the electrical torque analysis method and the stabilising conditions of the grid-tied converter operating under different control modes are further derived. The system stability mainly corresponds with DC network dynamics under constant active power control mode. On the contrary, the grid-tied converter under constant DC-link voltage control mode has no stability problem. Generally, elevating the DC-link capacitance or decreasing the droop gain can greatly improve the stability margin reserve of the VSC-HVDC links. In addition, the control gains of the classical PQ controller are proven to have limited impacts on DC-side system stability. Finally, the results of numerical simulation prove the validity of the proposed stability analysis method and the stable boundary for the grid-tied converter with different control modes.
Keywords: Power convertors
Power grids
Power system stability
Publisher: The Institution of Engineering and Technology
Journal: IET energy systems integration 
EISSN: 2516-8401
DOI: 10.1049/esi2.12110
Rights: © 2023 The Authors. IET Energy Systems Integration published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology and Tianjin University.
This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
The following publication Zhang, X., Li, Y., Li, J., Wu, T., Yang, S., & Hao, Z. (2024). DC-side stability analysis of grid-tied converter with different control modes based on electrical torque analysis. IET Energy Systems Integration, 6(1), 31-44 is available at https://doi.org/10.1049/esi2.12110.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Zhang_DC‐side_Stability_Analysis.pdf1.8 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

3
Citations as of Nov 17, 2024

Downloads

6
Citations as of Nov 17, 2024

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.