DEVICE, SYSTEM, AND METHOD FOR PROVIDING A LOW-VOLTAGE FAULT RIDE-THROUGH FOR A WIND GENERATOR FARM

摘要

A device, a system, and a method for preventing power- producing wind turbine generators(22) from tripping due to the detection of a low-voltage condition on a power grid (27) are disclosed.The disclosed device includes a resistor bank(35c) that absorbs real power and a control system that maintains the collector bus voltage (26) above a threshold voltage level during the duration of low-voltage condition on the power grid. Collector bus voltage (26) is maintained using gating signals that include phase delay angles to adjust the opening/closing of the switching devices.