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Títol:
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An adaptive prefiltering method to improve the speed/accuracy tradeoff of voltage sequence detection methods under adverse grid conditions
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Autor/a:
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Matas Alcalá, José; Castilla Fernández, Miguel; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Guzmán Solà, Ramon
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Altres autors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SEPIC - Sistemes Electrònics de Potència i de Control |
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Abstract:
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This paper deals with the improvement of the transient response and harmonic, subharmonic, and dc-offset voltage
rejection capability of a grid voltage sequence detection scheme based on a second-order generalized integrator (SOGI). To perform that, the SOGI structure is first analyzed in deep, emphasizing both its tradeoff limits between settling time and harmonic
attenuation and the sensitivity to grid subharmonics and dc-offset
voltage. Then, a study of the effect of grid voltage harmonics and
subharmonics in SOGI and in the SOGI-FLL and MSOGI-FLL structures is introduced. Hence, to overcome these problems, a new structure based on the use of the SOGI filter as prefilter for the previous structures is proposed to achieve a faster time response and higher harmonic rejection. This structure is used in a sequence detection scheme for the detection of the grid voltage components in the αβ-frame and it is applied in a three-phase PV system. Experimental and comparative results are shown to validate this proposal. |
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Abstract:
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Peer Reviewed |
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Matèries:
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-Àrees temàtiques de la UPC::Energies::Energia elèctrica::Automatització i control de l'energia elèctrica
-Voltage regulators
-Power quality
-Distributed generation of electric power--Research
-Integrators
-Distributed generation
-generalized integrators
-grid offset voltage rejection
-grid voltage sequence detection
-power quality
-subharmonic rejection
-voltage sags
-Energia elèctrica -- Distribució
-Sistemes de distribució d'energia elèctrica -- Control de qualitat |
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Drets:
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Tipus de document:
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Article - Versió publicada
Article |
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Publicat per:
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Institute of Electrical and Electronics Engineers (IEEE)
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Compartir:
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