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Grid-fault control scheme for three-phase photovoltaic inverters with adjustable power quality characteristics

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10.1109/TPEL.2010.2070081
 
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hdl:2117/11555

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Castilla Fernández, MiguelMés informacióMés informacióMés informació
Miret Tomàs, JaumeMés informacióMés informacióMés informació
Sosa Avendaño, Jorge Luis
Matas Alcalá, JoséMés informacióMés informacióMés informació
García de Vicuña Muñoz de la Nava, José LuisMés informacióMés informacióMés informació
Document typeArticle
Defense date2010-12-23
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
The power quality of a three-phase photovoltaic (PV) inverter drastically deteriorates in the presence of grid faults with unbalanced voltages.Aripple in the injected power and an increase in the current harmonic distortion are the main noticeable adverse effects produced by this abnormal grid situation. Several grid-fault control schemes are nowadays available for operating under unbalanced grid voltage. These control schemes usually have extreme power quality characteristics. Some of them have been conceived to completely avoid power ripple during unbalanced voltage sags, but at an expense of high current harmonic distortion.With other schemes, the harmonic distortion is totally eliminated but at an expense of high ripple in the injected power. This paper further explores the performance of PV inverters under unbalanced voltage sags. It has three theoretical contributions: 1) a generalized control scheme, which includes the aforementioned grid-fault controllers as particular cases; 2) a control strategy based on the use of continuous values for the control parameters. This original approach gives adjustable power quality characteristics that cannot be achieved with the previous control schemes; 3) three different control algorithms for calculating the continuous values of the control parameters. These contributions are experimentally validated with a digital signal processor-based laboratory prototype.
CitationCastilla, M. [et al.]. Grid-fault control scheme for three-phase photovoltaic inverters with adjustable power quality characteristics. "IEEE transactions on power electronics", 23 Desembre 2010, vol. 25, núm. 12, p. 2930-2940. 
URIhttp://hdl.handle.net/2117/11555
DOI10.1109/TPEL.2010.2070081
ISSN0885-8993
Publisher versionhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5560869&tag=1
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  • Departament d'Enginyeria Electrònica - Articles de revista [1.884]
  • SEPIC - Sistemes Electrònics de Potència i de Control - Articles de revista [131]
  • Departament d'Enginyeria Elèctrica - Articles de revista [994]
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