A Novel Control Strategy for a DFIG Based Wind Power under Unbalanced Conditions

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This paper deals about an effective control strategy for wind power plant to bring out additional transmission capacity and better means of maintaining system reliability when compared to already existing control techniques. The rotor power of Doubly Fed Induction Generator (DFIG) is the only controlling parameter taken to determine four current reference values using this single strategy. These references are fed to rotor side and grid side current controllers which enables torque, grid side real and reactive power, as well as pitch angle control resulting in more prominent solution. This control strategy therefore relieves the need for switching between different controllers or reconfiguration of the hardware and it also provides automatic voltage and frequency regulation for network. The effectiveness and robustness of the proposed control strategy is studied through simulation carried out on detailed switched model of the system in the PSCAD/EMTDC version 4.2 software environment.

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166-171

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May 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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