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This paper presents an approach that mitigates the flicker in doubly-fed induction generator (DFIG) wind turbine systems. The reactive power is controlled to compensate for the flicker from the grid-side converter (GSC). However, it is not sufficient to eliminate the flicker fully in the case of the low grid impedance ratio and the limited capacity of converters. So, a method using an energy storage...
This paper proposes an LVRT (low-voltage ride-through) of multi-pole permanent-magnet synchronous generator (PMSG) for wind turbine systems under the grid fault condition and varying wind speed using the energy storage system (ESS) and braking chopper (BC). The proposed topology can reduce the ESS power rating and improve the output performance. A detailed design procedure and control strategy for...
This paper presents a simulation model based on support vector regression (SVR) for flicker estimation emitted from wind turbines. Training patterns are developed by applying the moving window method to estimate the voltage flicker. A comparison is done for the fixed speed wind turbine (WT), which leads to a conclusion that the SVR based flicker measurement is effective and not limited by processing...
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