Modelling and Passivity Analysis of VSC Output Impedance under SRF and αβ Control Frames

Kanakesh Vatta Kkuni, Sujay Ghosh, Guangya Yang, Campbell Booth

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Passivity property of input impedance of grid connected Voltage Source Converter (VSC) is a good measure for ensuring small signal stability of the power system composed of numerous interconnected dynamical system. It is well known that a pure passivity for a VSC is impossible to obtain, however, if the frequency range of the negative admittance from VSC terminal can be minimized, the possibility instability due to grid side impedance interacting with the VSC system can be reduced. For a VSC, there are two major design alternatives for the current controller;a decoupled dq current controller and αβ frame Proportional Resonant controller. This paper compares these two current controller alternatives for VSC, based on their passivity property. The small signal model of LCL filter equipped VSC with the two types of current controller is also derived. Some design recommendations using the considered current controllers, for reducing non-passive frequency range is also presented.
Original languageEnglish
Title of host publicationProceedings of Iecon 2019 - 45th Annual Conference of the Ieee Industrial Electronics Society
Number of pages6
PublisherIEEE
Publication date2019
Pages1856-1861
DOIs
Publication statusPublished - 2019
Event45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019) - Lisbon Congress Center, Lisbon, Portugal
Duration: 14 Oct 201917 Oct 2019
Conference number: 45
https://iecon2019.org/

Conference

Conference45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019)
Number45
LocationLisbon Congress Center
CountryPortugal
CityLisbon
Period14/10/201917/10/2019
Internet address
SeriesIecon 2019 - 45th Annual Conference of the Ieee Industrial Electronics Society
ISSN2577-1647

Cite this

Kkuni, K. V., Ghosh, S., Yang, G., & Booth, C. (2019). Modelling and Passivity Analysis of VSC Output Impedance under SRF and αβ Control Frames. In Proceedings of Iecon 2019 - 45th Annual Conference of the Ieee Industrial Electronics Society (pp. 1856-1861). IEEE. Iecon 2019 - 45th Annual Conference of the Ieee Industrial Electronics Society https://doi.org/10.1109/iecon.2019.8927124