| 摘要 |
The invention relates to a method for controlling a converter (4) of a wind turbine, the converter being connected to a rotor (32) of a doubly fed asynchronous generator (3) in order to feed electrical energy into an electric network (9), wherein the converter (4) comprises a network-side inverter (41), a generator-side inverter (42), and a controller (5), which outputs target values for demanded reactive power to at least one of the inverters (41, 42). According to the invention, a reactive power target signal is determined for the portion that the network-side inverter (41) contributes to the demanded reactive power QT, a slip signal (s) is determined from the frequency of the network (9) and the rotational speed of the generator (3), a gain value is calculated according to the slip signal, and the gain value is modified according to the reactive power target signal for the network-side inverter. The distribution of the reactive power between the two inverters is thus optimized over a wide operating range, not only at individual predetermined operating points as in the prior art. The invention further relates to a wind turbine having a correspondingly designed converter controller. |
