A Novel Crowbar Protection Technique for DFIG Wind Farm during Fault Ride Through

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Provided by: The International Journals of Engineering & Sciences (IJENS)
Topic: Hardware
Format: PDF
In this paper, the authors propose a terminal crowbar protection technique for Doubly Fed Induction Generators (DFIG) to protect the rotor converter and enhance network stability during grid disturbances. Simulation test using MATLAB-Simulink toolbox is implemented on a 9 MW wind farm exports its power to 120 KV grid. The simulation is performed using different values of crowbar resistances. The variations of rotor current, rotor speed, DC-link voltage, active power and reactive power of the wind farm are investigated. Also, a comparison between the conventional crowbar and the proposed crowbar protection techniques is investigated.
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