MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202617090155 A) filed by Vestas Wind Systems As on July 24, 2026, for A Method To Limit Current For Grid Forming Wind Turbine.
Inventors include Gong, Hong; Andersen, Gert Karmisholt; and Portugal De Sena Lopes, Afonso Gil.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: The invention relates to a method for controlling a wind power installation in order to limit current of the wind power installation, the wind power installation comprising a rotor, an electrical machine driven by the rotor, a power converter comprising a machine side converter and a line side converter configured to supply a current to a grid, and a DC link electrically connected to an output of the machine side converter and an input of the line side converter, the line side converter having an output voltage and an output current, the method comprising: determining a grid voltage reference for controlling the line side converter; wherein the grid voltage reference comprises a summation of a first output voltage and a second output voltage; managing slow dynamics by means of a grid forming controller configured to control the first output voltage towards the grid voltage reference, and managing fast dynamics by means of a grid following controller configured to control the second output voltage towards the grid voltage reference; triggering a current limiter mode, when the output current reaches a threshold current value, operating the grid following controller, with a grid current controller (GCC) utilizing: a proportion (P) controller when the output current is below the threshold current value, and a proportional-integral (PI) controller when the output current reaches the threshold current value, maintaining the first output voltage of the grid forming controller to the output voltage level prior to triggering the current limiter, while operating in the current limiter mode, operating the line side converter according to the combination of the output voltage from the grid forming controller and the grid following controller.
Disclaimer: Curated by HT Syndication.
