LVRT Enhancement in Grid Connected DFIG Based Wind Turbine Using PSO Optimized DVR
DOI:
https://doi.org/10.13052/dgaej2156-3306.3541Keywords:
DFIG, DVR, LVRT, PSOAbstract
This paper suggest a control strategy to enhance the LVRT capability of
doubly fed induction generator (DFIG) based wind turbine system using
dynamic voltage restorer (DVR). Wind turbine generator should support the
grid during the fault time. The method used here is series compensation
method at the point of common coupling on the occurrence of fault to
maintain the stator voltage constant. LVRT performance is improved by
optimization of PI parameters using particle swarm optimization as compare
to conventional DVR. This PI controller is used to regulate the IGBT pulses of
the inverter fed by DC source. To validate the improved LVRT performance,
a 9 MW grid integrated DFIG based wind plant is considered. The result
shows that the voltage compensation of sag is greatly improved with PSO
optimized DVR.
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