Low Voltage Ride-through in DFIG Wind Generators by Controlling the Rotor Current without Crowbars

Rodríguez Arribas, Jaime and Fernández Rodríguez, Adrián and Hermoso Muñoz, Angel and Veganzones Nicolas, Carlos (2014). Low Voltage Ride-through in DFIG Wind Generators by Controlling the Rotor Current without Crowbars. "Energies", v. 7 (n. 2); pp. 498-519. ISSN 1996-1073. https://doi.org/10.3390/en7020498.

Description

Title: Low Voltage Ride-through in DFIG Wind Generators by Controlling the Rotor Current without Crowbars
Author/s:
  • Rodríguez Arribas, Jaime
  • Fernández Rodríguez, Adrián
  • Hermoso Muñoz, Angel
  • Veganzones Nicolas, Carlos
Item Type: Article
Título de Revista/Publicación: Energies
Date: February 2014
ISSN: 1996-1073
Volume: 7
Subjects:
Freetext Keywords: DFIG wind generators; low voltage ride through (LVRT) capability; voltage sag; voltage dip
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Among all the different types of electric wind generators, those that are based on doubly fed induction generators, or DFIG technology, are the most vulnerable to grid faults such as voltage sags. This paper proposes a new control strategy for this type of wind generator, that allows these devices to withstand the effects of a voltage sag while following the new requirements imposed by grid operators. This new control strategy makes the use of complementary devices such as crowbars unnecessary, as it greatly reduces the value of currents originated by the fault. This ensures less costly designs for the rotor systems as well as a more economic sizing of the necessary power electronics. The strategy described here uses an electric generator model based on space-phasor theory that provides a direct control over the position of the rotor magnetic flux. Controlling the rotor magnetic flux has a direct influence on the rest of the electrical variables enabling the machine to evolve to a desired work point during the transient imposed by the grid disturbance. Simulation studies have been carried out, as well as test bench trials, in order to prove the viability and functionality of the proposed control strategy.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainENE2005-06299UnspecifiedCarlos Veganzones NicolásAnálisis, diseño y desarrollo de un equipo de generación de huecos de tensión para el análisis de la respuesta de sistemas de generación eólica frente a faltas de red
Government of SpainENE 2009-13276UnspecifiedUniversidad Politécnica de MadridUnspecified

More information

Item ID: 29020
DC Identifier: http://oa.upm.es/29020/
OAI Identifier: oai:oa.upm.es:29020
DOI: 10.3390/en7020498
Official URL: http://www.mdpi.com/1996-1073/7/2/498
Deposited by: Memoria Investigacion
Deposited on: 10 Dec 2014 18:07
Last Modified: 31 Mar 2016 10:48
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