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Control of DFIG-WT under unbalanced grid voltage conditions
(2009)
Comunicació de congrés.
Accés obert
Comunicació de congrés.
Accés obert
The voltage oriented control in the synchronous
reference frame (VOC-SRF) have been extensively used for
controlling wind turbines based on doubly fed induction
generators (DFIG-WTs) through the rotor side converter of ...
Overcurrent protection based on ANNs for smart distribution networks with grid-connected VSIs
(2020-12-16)
Article.
Accés obert
Article.
Accés obert
Recently, the global concern for protection coordination is growing with the impact of distributed generators connected to medium voltage distribution system. Effective protection strategies need to be developed in order ...
Simulation of wound rotor synchronous machine under voltage sags
(IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
Comunicació de congrés.
Accés obert
Comunicació de congrés.
Accés obert
This paper presents a study of the Wound Rotor
Synchronous Machine (SM) stability under voltage sags (dips).
Machine behavior has been analyzed by considering different
magnitudes (or depths) and duration of the sag. ...
Parameter estimation of squirrel-cage motors with parasitic torques in the torque–slip curve
(2015-04-16)
Article.
Accés obert
Article.
Accés obert
This paper studies parasitic torques in steady-state torque–slip curves of squirrel-cage induction motors. The
curves of nine motors (small, medium and large size units), three of which were measured in the range s = 2 ...
Parameter estimation of wound-rotor induction motors from transient measurements
(2014-06)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
A new method for determination of the steady-state equivalent circuit parameters of wound-rotor induction motors using experimental data from starting transient measurements is presented. The algorithm data are the stator ...
On fixed-speed WT generator modeling for rotor speed stability studies
(2012-02)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
This paper analyzes fixed-speed induction generator modeling oriented to rotor speed stability studies. The single- and double-cage models are compared. The effects of symmetrical voltage sags on generator behavior are ...
Symmetrical and unsymmetrical voltage sag effects on the three-phase synchronous machine stability
(2009)
Comunicació de congrés.
Accés obert
Comunicació de congrés.
Accés obert
This paper focuses on the effects of voltage sags, both symmetrical and unsymmetrical, on the three-phase Synchronous Machine (SM). Voltage sags on SM cause speed variations, current and torque peaks and hence may cause ...
Behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags
(2012-09)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
This study analyses the dynamic behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags, providing insights into wind turbine fault ride-through capability. The sags are assumed to be caused ...
Control of power converters in distributed generation applications under grid fault conditions
(IEEE, 2011)
Text en actes de congrés.
Accés restringit per política de l'editorial
Text en actes de congrés.
Accés restringit per política de l'editorial
The operation of distributed power generation
systems under grid fault conditions is a key issue for the
massive integration of renewable energy systems. Several
studies have been conducted to improve the response of ...
Small synchronous machine protection during voltage sags caused by MV grid faults
(2018-03-01)
Article.
Accés obert
Article.
Accés obert
This paper analyses the impact of symmetrical and unsymmetrical voltage sags caused by distribution and transmission faults on the dynamic behaviour of small salient-pole synchronous machines connected to the MV grid, and ...