State observer for grid-voltage sensorless control of a grid-connected converter equipped with an LCL filter

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Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering | A4 Artikkeli konferenssijulkaisussa
Date
2014
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
Series
Abstract
This paper proposes a simple grid-voltage sensorless alternative to the conventional PLL synchronization for a grid-connected converter equipped with an LCL filter. The grid-voltage magnitude and angle are estimated based only on the converter current and DC-voltage measurements. Reduced number of sensors decreases costs and amount of sensor wiring. The analytically derived design is validated experimentally.
Description
Keywords
adaptive observer, grid-connected converter, grid-voltage sensorless, sensorless control, small-signal linearisation
Other note
Citation
Kukkola, Jarno & Hinkkanen, Marko. 2014. State observer for grid-voltage sensorless control of a grid-connected converter equipped with an LCL filter. 16th European Conference on Power Electronics and Applications (EPE'14-ECCE Europe). ISBN 978-1-4799-3014-2 (electronic). DOI: 10.1109/epe.2014.6910740.