State observer for sensorless control of a grid-connected converter equipped with an LCL filter: Direct discrete-time design
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Journal ISSN
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School of Electrical Engineering |
A4 Artikkeli konferenssijulkaisussa
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Author
Date
2015
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
Series
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 grid-connected 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 estimation of the angle and magnitude of the grid voltage. The analytically derived design is experimentally validated, and the results demonstrate rapid convergence of the estimated angle and magnitude.Description
Keywords
active front-end rectifier, adaptive observer, distributed generation, line-voltage sensorless, small-signal linearisation, state feedback, synchronization
Other note
Citation
Kukkola, Jarno & Hinkkanen, Marko. 2015. State observer for sensorless control of a grid-connected converter equipped with an LCL filter: Direct discrete-time design. IEEE Energy Conversion Congress and Exposition (ECCE). 8. ISBN 978-1-4673-7150-6 (electronic). DOI: 10.1109/ecce.2015.7310435.
