Li, Chuanyue ![]() ![]() ![]() ![]() |
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Abstract
In this paper, it is identified that unstable weak grid connection of voltage source inverters (VSIs) is dominantly caused by the current control. In particular, it is found the proportional gain k p of conventional PI controller cannot balance the grid voltage impact and damping capability when a weak grid with short circuit ratio (SCR) < 1.3 is connected. This issue is solved in this paper by simply restructuring the PI controller as an IP controller for current control. This IP controller will not change the tuning method of current control and make this VSI indeed connect to a very weak grid with rated power injection.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Engineering |
Publisher: | Institute of Electrical and Electronics Engineers |
ISSN: | 0885-8950 |
Date of First Compliant Deposit: | 2 November 2021 |
Date of Acceptance: | 15 October 2021 |
Last Modified: | 08 Nov 2023 03:33 |
URI: | https://orca.cardiff.ac.uk/id/eprint/144988 |
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