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Current Error Based Compensations for VSC Current Control in Weak Grid for Wind Farm Applications

Givaki, Kamyab; Chen, Dong; Xu, Lie

Authors

Kamyab Givaki

Dong Chen

Lie Xu



Abstract

A novel current control strategy is proposed for voltage source converter connecting to weak grid using conventional current vector control with additional current error based voltage angle and magnitude compensations. For connecting to very weak AC network, conventional vector control is proved to be unstable, whereas the proposed current error based compensations can significantly improve system stability. In this way, the proposed control can still benefit from the presence of current closed-loop control without the need for control switching during large AC voltage variations. Comprehensive frequency domain model is established to analyze stability performance. Comprehensive time domain simulations are further carried out to validate its effectiveness and robustness by demonstrating its current control performance during a three-phase fault, multiple-converter situation and various grid strength conditions.

Citation

Givaki, K., Chen, D., & Xu, L. (2019). Current Error Based Compensations for VSC Current Control in Weak Grid for Wind Farm Applications. IEEE Transactions on Sustainable Energy, 10(1), 26-35. https://doi.org/10.1109/tste.2018.2820386

Journal Article Type Article
Acceptance Date Mar 7, 2018
Online Publication Date Mar 28, 2018
Publication Date 2019-01
Deposit Date Apr 11, 2018
Publicly Available Date Apr 11, 2018
Journal IEEE Transactions on Sustainable Energy
Print ISSN 1949-3029
Electronic ISSN 1949-3037
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 10
Issue 1
Pages 26-35
DOI https://doi.org/10.1109/tste.2018.2820386
Keywords voltage source converter, weak grid, current control, stability, fault current
Public URL http://researchrepository.napier.ac.uk/Output/1139403
Contract Date Apr 11, 2018

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This paper is a post-print of a paper submitted to and accepted for publication in IEEE Transaction on Sustainable Energy and is subject to Institution of Electrical and Electronic Engineering Copyright. The copy of record is available at IEEE Xplore Digital Library.







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