Rotor voltage dynamics in the doubly fed induction generator during grid faults
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Cita com:
hdl:2117/7789
Tipus de documentArticle
Data publicació2010-01-29
Condicions d'accésAccés obert
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Abstract
This paper presents a new control strategy for the rotor-side converter (RSC) of wind turbines (WTs) based on doubly fed induction generators (DFIG) that intends to improve its
low-voltage ride through capability. The main objective of this work is to design an algorithm that would enable the system to
control the initial overcurrents that appear in the generator during voltage sags, which can damage the RSC, without tripping it.
As a difference with classical solutions, based on the installation of crowbar circuits, this operation mode permits to keep the inverter
connected to the generator, something that would permit the injection
of power to the grid during the fault, as the new grid codes
demand. A theoretical study of the dynamical behavior of the rotor
voltage is also developed, in order to show that the voltage at the
rotor terminals required for the control strategy implementation
remains under controllable limits. In order to validate the proposed
control system simulation, results have been collected using
PSCAD/EMTDC and experimental tests have been carried out in
a scaled prototype.
Descripció
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CitacióLima, F. [et al.]. Rotor voltage dynamics in the doubly fed induction generator during grid faults. "IEEE transactions on power electronics", 29 Gener 2010, vol. 25, núm. 1, p. 118-130.
ISSN0885-8993
Versió de l'editorhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5200474
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rotor.pdf | 3,461Mb | Visualitza/Obre |