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Flexible voltage support control for three-phase distributed generation inverters under grid fault

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10.1109/TIE.2012.2185016
 
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hdl:2117/19703

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Camacho Santiago, AntonioMés informacióMés informacióMés informació
Castilla Fernández, MiguelMés informacióMés informacióMés informació
Miret Tomàs, JaumeMés informacióMés informacióMés informació
Vasquez, Juan C.
Alarcón Gallo, Eduardo
Document typeArticle
Defense date2013-04
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
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
Ancillary services for distributed generation (DG)systems become a challenging issue to smartly integrate renewable-energy sources into the grid. Voltage control is one of these ancillary services which can ride through and support the voltage under grid faults. Grid codes fromthe transmission system operators describe the behavior of the energy source, regulating voltage limits and reactive power injection to remain connected and support the grid under fault. On the basis that different kinds of voltage sags require different voltage support strategies, a flexible control scheme for three-phase grid-connected inverters is proposed. In three-phase balanced voltage sags, the inverter should inject reactive power in order to raise the voltage in all phases. In one- or two-phase faults, the main concern of the DG inverter is to equalize voltages by reducing the negative symmetric sequence and clear the phase jump. Due to system limitations, a balance between these two extreme policies is mandatory. Thus, over- and undervoltage can be avoided, and the proposed control scheme prevents disconnection while achieving the desired voltage support service. The main contribution of this work is the introduction of a control algorithm for reference current generation that provides flexible voltage support under grid faults. Two different voltage sags have been experimentally tested to illustrate the behavior of the proposed voltage support control scheme.
CitationCamacho, A. [et al.]. Flexible voltage support control for three-phase distributed generation inverters under grid fault. "IEEE transactions on industrial electronics", Abril 2013, vol. 60, núm. 4, p. 1429-1441. 
URIhttp://hdl.handle.net/2117/19703
DOI10.1109/TIE.2012.2185016
ISSN0278-0046
Publisher versionhttp://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6134653
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  • Departament d'Enginyeria Electrònica - Articles de revista [1.609]
  • SEPIC - Sistemes Electrònics de Potència i de Control - Articles de revista [112]
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