State Observer for Grid-Voltage Sensorless Control of a Converter Equipped with an LCL Filter: Direct Discrete-Time Design

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State Observer for Grid-Voltage Sensorless Control of a Converter Equipped with an LCL Filter: Direct Discrete-Time Design. / Kukkola, Jarno; Hinkkanen, Marko.

In: IEEE Transactions on Industry Applications, Vol. 52, No. 4, 7433435, 01.07.2016, p. 3133-3145.

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@article{dab6cd9fb5d04a61a9c253ea24070589,
title = "State Observer for Grid-Voltage Sensorless Control of a Converter Equipped with an LCL Filter: Direct Discrete-Time Design",
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.",
keywords = "Active front-end rectifier, adaptive observer, distributed generation, line-voltage sensorless, small-signal linearization, state feedback, synchronization",
author = "Jarno Kukkola and Marko Hinkkanen",
year = "2016",
month = "7",
day = "1",
doi = "10.1109/TIA.2016.2542060",
language = "English",
volume = "52",
pages = "3133--3145",
journal = "IEEE Transactions on Industry Applications",
issn = "0093-9994",
number = "4",

}

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TY - JOUR

T1 - State Observer for Grid-Voltage Sensorless Control of a Converter Equipped with an LCL Filter: Direct Discrete-Time Design

AU - Kukkola, Jarno

AU - Hinkkanen, Marko

PY - 2016/7/1

Y1 - 2016/7/1

N2 - 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.

AB - 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.

KW - Active front-end rectifier

KW - adaptive observer

KW - distributed generation

KW - line-voltage sensorless

KW - small-signal linearization

KW - state feedback

KW - synchronization

UR - http://www.scopus.com/inward/record.url?scp=84978818289&partnerID=8YFLogxK

U2 - 10.1109/TIA.2016.2542060

DO - 10.1109/TIA.2016.2542060

M3 - Article

AN - SCOPUS:84978818289

VL - 52

SP - 3133

EP - 3145

JO - IEEE Transactions on Industry Applications

JF - IEEE Transactions on Industry Applications

SN - 0093-9994

IS - 4

M1 - 7433435

ER -

ID: 4511289