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

Givaki, Kamyab; Chen, Dong; Xu, Lie

doi:10.1109/tste.2018.2820386

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.

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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