Crowbarless Fault Ride-Through of the Brushless Doubly Fed Induction Generator in a Wind Turbine Under Symmetrical Voltage Dips

Author

Teng Long ; Shiyi Shao ; Malliband, Paul ; Abdi, Ehsan ; McMahon, Richard A.

Author_Institution

Dept. of Eng., Univ. of Cambridge, Cambridge, UK

Volume

60

Issue

7

fYear

2013

fDate

7/1/2013 12:00:00 AM

Firstpage

2833

Lastpage

2841

Abstract

The brushless doubly fed induction generator (BDFIG) shows commercial promise for wind power generation due to its lower cost and higher reliability when compared with the conventional DFIG. In the most recent grid codes, wind generators are required to be able to ride through a low-voltage fault and meet the reactive current demand from the grid. A low-voltage ride-through (LVRT) capability is therefore important for wind generators which are integrated into the grid. In this paper, the authors propose a control strategy enabling the BDFIG to successfully ride through a symmetrical voltage dip. The control strategy has been implemented on a 250-kW BDFIG, and the experimental results indicate that the LVRT is possible without a crowbar.

Keywords

asynchronous generators; brushless machines; machine control; power generation control; power generation faults; power generation reliability; power grids; wind power plants; wind turbines; BDFIG; LVRT; brushless doubly fed induction generator; control strategy; crowbarless low-voltage fault ride-through; grid code; power 250 kW; reactive current demand; reliability; symmetrical voltage dip; wind power generation; wind turbine; Angular velocity; Circuit faults; Low voltage; Rotors; Vectors; Voltage control; Windings; AC generators; doubly fed induction generators (DFIG); fault ride-through; wind energy;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2012.2208437

Filename

6241424