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Tuning method of a grid-following converter for the extremely-weak-grid connection

Li, Chuanyue, Wang, Sheng and Liang, Jun 2022. Tuning method of a grid-following converter for the extremely-weak-grid connection. IEEE Transactions on Power Systems 10.1109/TPWRS.2022.3167899

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Abstract

This paper proves that a grid-following converter can stably connect to a weak grid even short-circuit ratio (SCR) is 1. Root instability causes of this grid-following control are identified including fast control response, insufficient damping, and slow voltage support. A simple and effective tuning guideline is proposed to stabilize this connection. Three control modes are considered in this tuning guideline including current control, active power and voltage (PV) control, and active power and reactive power (PQ) control . The switching model of a two-level converter is used for the simulation validation.

Item Type: Article
Status: In Press
Schools: Engineering
Publisher: Institute of Electrical and Electronics Engineers
ISSN: 0885-8950
Date of First Compliant Deposit: 20 May 2022
Date of Acceptance: 30 March 2022
Last Modified: 21 May 2022 17:43
URI: https://orca.cardiff.ac.uk/id/eprint/149627

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