| 摘要 |
The invention relates to a method for controlling a converter of a wind energy plant, said converter being connected to the rotor of a double-energized asynchronous generator for supplying electric energy to an electric power grid, wherein the converter comprises an inverter on the generator side, an inverter on the power grid side, and at least one converter regulator for regulating and/or controlling the currents supplied by at least one of the inverters to the generator and/or to the electric power grid, and a corresponding wind energy plant. The invention provides the detection of a change of the electric voltage applied, of the active currents output, and/or of the idle currents output to the inverter, the determination of whether the change detected corresponds to a predetermined change, and the change of the target values of the effective currents to be output, and/or of the idle currents of the other inverter to be output, as long as the change detected corresponds to a predetermined change. The current output and the regulation of a wind energy plant having a double-energized asynchronous generator can be improved significantly in this manner, as long as the controls of the two inverters are not operated independently of each other as until now, but instead the controls of the two inverters are adjusted to one another such that the total power output is optimized. |
