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As the wind power penetration is increasing rapidly into the power grid, modern gird codes require the wind turbines (WTs) to possess the low voltage ride-through (LVRT) capability. In order to evaluate the performance of a WT under grid fault conditions, a voltage sag generator (VSG) is needed to simulate all kinds of grid faults. This paper investigates a three-phase programmable VSG based on a...
This paper presents low voltage ride through (LVRT) characteristics analysis of variable speed wind turbine (VSWT) driving a permanent magnet synchronous generator (PMSG). The VSWT-PMSG is becoming very popular these days in wind power application. In some recent studies, the transient stability and LVRT characteristic of VSWT-PMSG has been reported using different types of symmetrical and unsymmetrical...
Doubly-Fed Induction Generators (DFIGs) are commonly utilized in wind farms nowadays due to their advantages as compared with single fed ones. Control complexities and their unique dynamic characteristics may, however, raise different problems during abnormal or faulty operating conditions. Accordingly, the behavior of the associated protective elements at the Point of Common Coupling Point (PCC)...
In recent years, the proportion of the wind power in the grid is increasing rapidly. When the grids faults results in voltage decline, the widespread tripping of wind generators could lead to transient instabilities and local or overall blackouts. So it is concerned that the wind turbines merge into the grid and the request of the low voltage ride through (LVRT) ability is proposed. This paper analysises...
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