State observer for sensorless control of a grid-connected converter equipped with an LCL filter: Direct discrete-time design

Kukkola, Jarno; Hinkkanen, Marko

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State observer for sensorless control of a grid-connected converter equipped with an LCL filter: Direct discrete-time design

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Title:	State observer for sensorless control of a grid-connected converter equipped with an LCL filter: Direct discrete-time design
Author(s):	Kukkola, Jarno ; Hinkkanen, Marko
Date:	2015
Language:	en
Pages:	8
Department:	Sähkötekniikan ja automaation laitos Department of Electrical Engineering and Automation
ISBN:	978-1-4673-7150-6 (electronic)
DOI-number:	10.1109/ecce.2015.7310435
Subject:	Automation, Electrical engineering, Energy
Keywords:	active front-end rectifier, adaptive observer, distributed generation, line-voltage sensorless, small-signal linearisation, state feedback, synchronization
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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.
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.
Rights: © 2015 Institute of Electrical & Electronics Engineers (IEEE). Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.
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