Next Article in Journal
Integration of A Solid Oxide Fuel Cell into A 10 MW Gas Turbine Power Plant
Next Article in Special Issue
A Net-Present Value Analysis for a Wind Turbine Purchase at a Small US College
Previous Article in Journal
Numerical Experiments Providing New Insights into Plasma Focus Fusion Devices
Previous Article in Special Issue
Mass and Aerodynamic Imbalance Estimates of Wind Turbines
Energies 2010, 3(4), 738-753; doi:10.3390/en3040738
Article

Crowbar System in Doubly Fed Induction Wind Generators

1
, 2,* , 1
, 3
 and 4
Received: 3 February 2010; in revised form: 26 February 2010 / Accepted: 27 February 2010 / Published: 12 April 2010
(This article belongs to the Special Issue Wind Energy)
Download PDF [546 KB, updated 13 April 2010; original version uploaded 12 April 2010]
Abstract: In the last 15 years, the use of doubly fed induction machines in modern variable-speed wind turbines has increased rapidly. This development has been driven by the cost reduction as well as the low-loss generation of Insulated Gate Bipolar Transistors (IGBT). According to new grid code requirements, wind turbines must remain connected to the grid during grid disturbances. Moreover, they must also contribute to voltage support during and after grid faults. The crowbar system is essential to avoid the disconnection of the doubly fed induction wind generators from the network during faults. The insertion of the crowbar in the rotor circuits for a short period of time enables a more efficient terminal voltage control. As a general rule, the activation and the deactivation of the crowbar system is based only on the DC-link voltage level of the back-to-back converters. In this context, the authors discuss the critical rotor speed to analyze the instability of doubly fed induction generators during grid faults.
Keywords: crowbar system; doubly fed induction generator; induction generator; reactive power control; wind power generation crowbar system; doubly fed induction generator; induction generator; reactive power control; wind power generation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Salles, M.B.C.; Hameyer, K.; Cardoso, J.R.; Grilo, A.P.; Rahmann, C. Crowbar System in Doubly Fed Induction Wind Generators. Energies 2010, 3, 738-753.

AMA Style

Salles MBC, Hameyer K, Cardoso JR, Grilo AP, Rahmann C. Crowbar System in Doubly Fed Induction Wind Generators. Energies. 2010; 3(4):738-753.

Chicago/Turabian Style

Salles, Maurício B. C.; Hameyer, Kay; Cardoso, José R.; Grilo, Ahda. P.; Rahmann, Claudia. 2010. "Crowbar System in Doubly Fed Induction Wind Generators." Energies 3, no. 4: 738-753.


Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert