The Doubly Fed Wind Power Generator Output Characteristic with the Asymmetrical Grid Voltage

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Abstract:

The paper describe the imbalance loads、single phase short circuit to ground or bidirectional circuit to ground in the grid can bring unbalanced fault and the asymmetrical grid voltage. In the DFIG the faint imbalance stator voltage can bring much imbalance current, electromagnetic torque and active power would fluctuate. The DFIG performance will deteriorate, the central reason is the negative sequence component of the stator voltage、current with the asymmetrical grid voltage. The comparison between evaluated results and simulation of stator、rotor transient currents when the grid voltage drops is similar much.

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317-321

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April 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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