| 摘要 |
It is described a method for controlling a DC link voltage of a power converter connecting an electric generator of a wind turbine with a power grid. The described method comprises (a) determining the rotational speed (É g ) of a rotor of the electric generator, (b) determining a strength of harmonic components of the rotational speed (É g ) of the rotor, wherein the harmonic components have frequency components being different from a fundamental rotational frequency of the electric generator, (c) determining a damping reference signal (P DTD , T DTD ) as a function of the determined strength of the harmonic components, and (d) controlling the DC link voltage (V DC ) of the power converter in response to the determined damping reference signal (P DTD , T DTD ) . It is further described a corresponding control system (200, 300, 400, 800, 900) and a computer program, which are configures for carrying out the above described control method. |
