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

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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.
Original languageEnglish
Title of host publicationThe 16th European Conference on Power Electronics and Applications (EPE'14 ECCE Europe)
Place of PublicationLappeenranta, Finland
Number of pages10
ISBN (Electronic)978-1-4799-3014-2
DOIs
Publication statusPublished - 26 Aug 2014
MoE publication typeA4 Article in a conference publication

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  • Cite this

    Kukkola, J., & Hinkkanen, M. (2014). State observer for grid-voltage sensorless control of a grid-connected converter equipped with an LCL filter. In The 16th European Conference on Power Electronics and Applications (EPE'14 ECCE Europe) Lappeenranta, Finland. https://doi.org/10.1109/EPE.2014.6910740