Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Article Title: LOW VOLTAGE RIDE-THROUGH METHODS BASED ON GRID CODES FOR DOUBLY FED INDUCTION GENERATOR DRIVEN WIND TURBINE
by Kenneth E. Okedu and Roland Uhunwangho

Abstract:
Rapid wind power development has led to a shift from small generators to large generators and from single distributed units to large centralized clusters of generators commonly known as wind farms. Amongst the modern variable speed wind turbines, the doubly fed induction generator (DFIG) has recently been very attractive to wind turbine manufacturers due to its ability to decouple both active and reactive powers via its high frequency power converters. The suitability of wind turbines driven by DFIG operation is analyzed based on the recent grid codes for low voltage ride through (LVRT) of wind turbines in this paper. Different low voltage ride through methods or alternatives were discussed for the quick recovery of the DFIG wind turbine system during low voltage or fault in the grid. Two methods were proposed to protect the rotor current of the DFIG driven wind turbine during LVRT. Simulations were carried out in the standard laboratory software package using power system computer aided design and electromagnetic transient including DC (PSCAD/EMTDC).

Keywords: wind energy, doubly fed induction generator, induction generator, low voltage ride through, wind turbines, and grid codes

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