Apparatus and method for operating a wind turbine in conditions of voltage supply network under

摘要

A wind turbine to provide power to a power grid in terms of output voltage under varying and Energy, said wind turbine comprising a AC (245) generator having a stator (245a) and unrotor (245b) with blades variable pitch connected so functional to it, said wind turbine comprising; - a sensor output power (360); - a current sensor output (255); - a first sample and hold (215) to maintain a first set condition before devoltaje low output value; - one second sample and hold (315) to maintain a second set before condiciónde low output voltage value; - a controller inverter rotor comprising: - a power converter current (223) to receive the value of the first sample and hold and generaruna reference signal power, - an error detector (222) for generating dependent signals an error between the signal decorriente reference and a current signal output from the current sensor, - a PWM (224) coupled to the error detector to generate drive currents rotor paraestablecer values ​​output current dependent stator signal reference current, and - a controller passage of the blade (355) to receive the value of the second sample and hold (315) yuna sensor signal output power (360) and adjust the blade pitch of variabledependiente step signal output power during the low voltage condition and the value of segundomuestreo and retention.