Abstract
The latest grid codes require that wind turbines remain connected to the grid during severe grid disturbances, ensure fast restoration of active power to the pre-fault level and in some cases support reactive power to the grid. It is known that grid side inverters are sensitive to voltage disturbances which results in appearance of low order harmonics in line currents as well as huge ripple on a DC link capacitor. This chapter presents generalized method for grid-fault ride-through control for a wind turbine inverter. An analytical approach shows that a grid side inverter can ride through fault by supplying constant (smooth) power to the grid with adjustable power factor. The proposed control method can be easily integrated into the power-tracking control needed during normal operation. Simulation results are used to validate the proposed control method during severe faults.
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Stankovic, A.V., Schreiber, D., Zheng, X. (2012). Grid-Fault Ride-Through Control Method for a Wind Turbine Inverter. In: Keyhani, A., Marwali, M. (eds) Smart Power Grids 2011. Power Systems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21578-0_17
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DOI: https://doi.org/10.1007/978-3-642-21578-0_17
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