Flexible Control of Photovoltaic Grid-Connected Cascaded H-Bridge Converters during Unbalanced Voltage Sags

Tafti, H, Maswood, A, Konstantinou, G, Townsend, C, Acuna, P and Pou, J 2018, 'Flexible Control of Photovoltaic Grid-Connected Cascaded H-Bridge Converters during Unbalanced Voltage Sags', IEEE Transactions on Industrial Electronics, vol. 65, no. 8, pp. 6229-6238.


Document type: Journal Article
Collection: Journal Articles

Title Flexible Control of Photovoltaic Grid-Connected Cascaded H-Bridge Converters during Unbalanced Voltage Sags
Author(s) Tafti, H
Maswood, A
Konstantinou, G
Townsend, C
Acuna, P
Pou, J
Year 2018
Journal name IEEE Transactions on Industrial Electronics
Volume number 65
Issue number 8
Start page 6229
End page 6238
Total pages 10
Publisher IEEE
Abstract Multilevel cascade H-bridge (CHB) converters are one of the promising solutions for medium- and large-scale grid-connected photovoltaic power plants. However, there is a lack of a complete study about their operation during voltage sags. This paper proposes a flexible control strategy for the operation of photovoltaic grid-connected CHB inverters during unbalanced voltage sags. The key novelty is that the proposed strategy is able to inject both active and reactive powers to the grid with either balanced or unbalanced currents, while ensuring that all dc-link capacitor voltages remain balanced. The simulation and experimental evaluations of a 9-kVA grid-connected seven-level CHB illustrate and validate the performance of the proposed strategy for the operation of the grid-connected CHB converter during different unbalanced voltage sags.
Subject Information and Computing Sciences not elsewhere classified
Engineering not elsewhere classified
Keyword(s) Active/reactive power injection
cascaded H-bridge (CHB) converter
low-voltage ride-through (LVRT)
multilevel converter
photovoltaic systems
unbalanced voltage sag
DOI - identifier 10.1109/TIE.2017.2786204
Copyright notice © 2017 IEEE
ISSN 0278-0046
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Altmetric details:
Access Statistics: 11 Abstract Views  -  Detailed Statistics
Created: Tue, 26 Mar 2019, 09:36:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us