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DC-link Voltage Oscillations Reduction During Unbalanced Grid Faults for High Power Wind Turbines
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| Author(s) |
Hernan MIRANDA, Remus TEODORESCU, Pedro RODRIGUEZ, Lars HELLE |
| Abstract |
During unbalanced grid voltage faults the Power injected to the grid experiences 100Hz oscillations as a result of interactions between positive and negative sequence components of three-phase voltages and currents. These oscillations can become as high as \%50 percent of the rated power. In this article an improved controller is proposed which present different behavior during normal operation and faults to keep track of non-sinusoidal current reference signals. The reference signals are calculated to obtain zero power oscillations. Reconfigurable resonant controllers are used for this purpose applied to 3-level Neutral-point-clamped converter in the megawatt range. |
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| Filename: | 0843-epe2011-full-17092928.pdf |
| Filesize: | 864.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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