State Observer for Grid-Voltage Sensorless Control of a Converter Equipped with an LCL Filter: Direct Discrete-Time Design
Loading...
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Authors
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
13
3133-3145
3133-3145
Series
IEEE Transactions on Industry Applications, Volume 52, issue 4
Abstract
Synchronization with the power system is an essential part of control of grid-connected converters. This paper proposes a grid-voltage sensorless synchronization and control scheme for a converter equipped with an LCL filter, measuring only the converter currents and the dc voltage. A discrete-time pole-placement design method is used to formulate an adaptive full-order observer for the estimation of the frequency, angle, and magnitude of the grid voltage. The proposed discrete-time design method enables straightforward implementation and suits low sampling rates better than its continuous-time counterpart. The analytically derived design is experimentally validated, and the results demonstrate rapid convergence of the estimated quantities. Moreover, the experimental tests show that grid-voltage sensorless operation is possible under balanced and unbalanced grid disturbances and distorted grid conditions.Description
Other note
Citation
Kukkola , J & Hinkkanen , M 2016 , ' State Observer for Grid-Voltage Sensorless Control of a Converter Equipped with an LCL Filter: Direct Discrete-Time Design ' , IEEE Transactions on Industry Applications , vol. 52 , no. 4 , 7433435 , pp. 3133-3145 . https://doi.org/10.1109/TIA.2016.2542060