Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions

Pedro  Rodriguez; Alvaro Luna; Ignacio Candela; Ramon Mujal; Remus Teodorescu; Frede Blaabjerg

doi:10.1109/TIE.2010.2042420

Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions

Pedro Rodriguez, Alvaro Luna, Ignacio Candela, Ramon Mujal, Remus Teodorescu, Frede Blaabjerg

AAU Energy

Research output: Contribution to journal › Journal article › Research › peer-review

991 Citations (Scopus)

Abstract

This paper presents a new multiresonant frequency-adaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at the fundamental frequency but also other sequence components at other harmonic frequencies. The proposed system is called MSOGI-FLL since it is based on both a harmonic decoupling network consisting of multiple second-order generalized integrators (MSOGIs) and a frequency-locked loop (FLL), which makes the system frequency adaptive. In this paper, the MSOGI-FLL is analyzed for single- and three-phase applications, deducing some key expressions regarding its stability and tuning. Moreover, the performance of the MSOGI-FLL is evaluated by both simulations and experiments to show its capability for detecting different harmonic components in a highly polluted grid scenario.

Original language	English
Journal	I E E E Transactions on Industrial Electronics
Volume	58
Issue number	1
Pages (from-to)	127-138
Number of pages	12
ISSN	0278-0046
DOIs	https://doi.org/10.1109/TIE.2010.2042420
Publication status	Published - Jan 2011

Keywords

Frequency estimation
Frequency-locked loops (FLLs)
Harmonic analysis
Monitoring
Synchronization

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10.1109/TIE.2010.2042420

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5446347

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title = "Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions",

abstract = "This paper presents a new multiresonant frequency-adaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at the fundamental frequency but also other sequence components at other harmonic frequencies. The proposed system is called MSOGI-FLL since it is based on both a harmonic decoupling network consisting of multiple second-order generalized integrators (MSOGIs) and a frequency-locked loop (FLL), which makes the system frequency adaptive. In this paper, the MSOGI-FLL is analyzed for single- and three-phase applications, deducing some key expressions regarding its stability and tuning. Moreover, the performance of the MSOGI-FLL is evaluated by both simulations and experiments to show its capability for detecting different harmonic components in a highly polluted grid scenario.",

keywords = "Frequency estimation , Frequency-locked loops (FLLs) , Harmonic analysis , Monitoring, Synchronization ",

author = "Pedro Rodriguez and Alvaro Luna and Ignacio Candela and Ramon Mujal and Remus Teodorescu and Frede Blaabjerg",

year = "2011",

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AU - Rodriguez, Pedro

AU - Luna, Alvaro

AU - Candela, Ignacio

AU - Mujal, Ramon

AU - Teodorescu, Remus

AU - Blaabjerg, Frede

PY - 2011/1

Y1 - 2011/1

N2 - This paper presents a new multiresonant frequency-adaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at the fundamental frequency but also other sequence components at other harmonic frequencies. The proposed system is called MSOGI-FLL since it is based on both a harmonic decoupling network consisting of multiple second-order generalized integrators (MSOGIs) and a frequency-locked loop (FLL), which makes the system frequency adaptive. In this paper, the MSOGI-FLL is analyzed for single- and three-phase applications, deducing some key expressions regarding its stability and tuning. Moreover, the performance of the MSOGI-FLL is evaluated by both simulations and experiments to show its capability for detecting different harmonic components in a highly polluted grid scenario.

AB - This paper presents a new multiresonant frequency-adaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at the fundamental frequency but also other sequence components at other harmonic frequencies. The proposed system is called MSOGI-FLL since it is based on both a harmonic decoupling network consisting of multiple second-order generalized integrators (MSOGIs) and a frequency-locked loop (FLL), which makes the system frequency adaptive. In this paper, the MSOGI-FLL is analyzed for single- and three-phase applications, deducing some key expressions regarding its stability and tuning. Moreover, the performance of the MSOGI-FLL is evaluated by both simulations and experiments to show its capability for detecting different harmonic components in a highly polluted grid scenario.

KW - Frequency estimation

KW - Frequency-locked loops (FLLs)

KW - Harmonic analysis

KW - Monitoring

KW - Synchronization

U2 - 10.1109/TIE.2010.2042420

DO - 10.1109/TIE.2010.2042420

M3 - Journal article

SN - 0278-0046

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JO - I E E E Transactions on Industrial Electronics

JF - I E E E Transactions on Industrial Electronics

IS - 1

ER -

Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions

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