SYSTEMS AND METHODS FOR INCREASING WIND TURBINE POWER OUTPUT

摘要

Systems and methods for increasing the power output of wind turbines in a wind farm are disclosed. In particular, a wind farm can include first and second doubly fed induction generator wind turbine systems. The rotational rotor speed of the first wind turbine system can be regulated at reduced wind speeds based at least in part on data indicative of rotor voltage to increase power output of a doubly fed induction generator. The rotor speed can be regulated such that the rotor voltage does not exceed a voltage threshold. The power output of the first wind turbine system can be further increased by reducing its reactive power output. The reduced reactive power output of the first wind turbine system can be compensated for by an increased reactive power output of the second wind turbine system.

主权项

1. A wind turbine system, comprising:
a wind driven doubly fed induction generator having a rotor and a stator, the stator providing AC power to a stator bus; a power converter coupled to the rotor of the doubly fed induction generator via a rotor bus, the power converter providing an output to a line bus, the power converter having an associated voltage threshold at the rotor bus; and a control system configured to identify a reduced wind speed at the doubly fed induction generator; wherein at the reduced wind speed, the control system is further configured to regulate the rotational speed of the rotor of the doubly fed induction generator based at least in part on data indicative of the rotor voltage to increase the power output of the doubly fed induction generator, the control system regulating the rotational speed of the rotor such that the rotor voltage does not exceed a voltage threshold associated with the power converter at the rotor bus.