Control of a Doubly Fed Induction Wind Generator Under Unbalanced Grid Voltage Conditions
作者： Ted K. A. Brekken , Ned Mohan
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摘要: Wind energy is often installed in rural, remote areas characterized by weak, unbalanced power transmission grids. In induction wind generators, three-phase stator voltages cause a number of problems, such as overcurrent, currents, reactive pulsations, and stress on the mechanical components from torque pulsations. Therefore, beyond certain amount unbalance, generators are switched out network. This can further weaken grid. doubly fed (DFIGs), control rotor currents allows for adjustable speed operation control. paper presents DFIG strategy that enhances standard with controllers compensate problems caused an grid balancing eliminating pulsations
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