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This paper demonstrated the dynamic behavior of DFIG wind turbine during grid balance and unbalance faults by using simulation results, the effect of voltage sag on DFIG wind turbine is discussed through comparing of the different voltage sag depth in a type of fault lengthways and comparing one type of fault with another breadthwise. The response characteristics of DFIG wind turbine under PCC voltage...
This paper presents an approach to utilize a passive impedance network in series at the stator side of a typical DFIG wind turbine for the purpose of voltage sag ride through. A control strategy that enables the passive impedance network to engage and stabilize the stator flux during grid voltage sag events has been studied. Simulation results demonstrates that electromagnetic torque and rotor current...
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