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Quadrature signal generator based on all-pass filter for single-phase synchronization

Autor(es) y otros:
Blanco Charro, CristianAutoridad Uniovi; Díaz Reigosa, DavidAutoridad Uniovi; Briz del Blanco, FernandoAutoridad Uniovi; Guerrero, Josep M.
Fecha de publicación:
2014
Editorial:

IEEE

Versión del editor:
http://dx.doi.org/10.1109/ECCE.2014.6953757
Descripción física:
p. 2655-2662
Resumen:

Precise calculation of the grid voltage magnitude and phase is required for the operation of distributed power generation (DPG) systems. While the general concepts involved in the synchronization of single-phase and three-phase systems are the same, the practical implementation can differ substantially, the single-phase case being more challenging. Phase-locked-loop (PLL) based methods have been widely used for the synchronization of single-phase systems. These methods can be roughly grouped into methods that use a quadrature signal generator (QSG) and methods that implement a single-phase PLL. One drawback of single-phase PLL methods is that they usually produce a component at twice the fundamental frequency that needs to be removed. On the contrary, QSG methods do not induce such component, enabling therefore the use of three-phase PLLs. On the other hand, the phase error usually depends on the input magnitude for both methods. This paper proposes a QSG based single-phase synchronization technique that overcomes the aforementioned limitations of both single-phase PLLs and QSGs. It will be shown that the proposed method accurately estimates the magnitude and phase of the microgrid/grid fundamental voltage with high dynamic response, even under high distorted conditions

Precise calculation of the grid voltage magnitude and phase is required for the operation of distributed power generation (DPG) systems. While the general concepts involved in the synchronization of single-phase and three-phase systems are the same, the practical implementation can differ substantially, the single-phase case being more challenging. Phase-locked-loop (PLL) based methods have been widely used for the synchronization of single-phase systems. These methods can be roughly grouped into methods that use a quadrature signal generator (QSG) and methods that implement a single-phase PLL. One drawback of single-phase PLL methods is that they usually produce a component at twice the fundamental frequency that needs to be removed. On the contrary, QSG methods do not induce such component, enabling therefore the use of three-phase PLLs. On the other hand, the phase error usually depends on the input magnitude for both methods. This paper proposes a QSG based single-phase synchronization technique that overcomes the aforementioned limitations of both single-phase PLLs and QSGs. It will be shown that the proposed method accurately estimates the magnitude and phase of the microgrid/grid fundamental voltage with high dynamic response, even under high distorted conditions

URI:
http://hdl.handle.net/10651/31409
ISBN:
978-1-4799-5776-7
DOI:
10.1109/ECCE.2014.6953757
Patrocinado por:

This work was supported in part by the Research, Technological Development and Innovation Programs of the Ministry of Science and Innovation under grant MICINN-10-CSD2009-00046 and by the Personnel Research Training Program funded by the Regional Ministry of Education and Science of the Principality of Asturias under grant BP11-107

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  • Ingeniería Eléctrica, Electrónica, de Comunicaciones y de Sistemas [1086]
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