1results about How to "Good current limiting effect" patented technology

The application relates to the technical field of networked converter control, and discloses a current-limiting control method for a networked converter, a networked SVG and a medium, which comprises the following steps: obtaining a current-related quantity of the networked converter; when the current-related quantity exceeds a preset threshold, generating a virtual impedance based on the current-related quantity; combining the virtual impedance with a cubic quantity of a measured current to form a virtual voltage drop; and correcting a voltage reference instruction of the networked converter by using the virtual voltage drop to inhibit the output current of the networked converter. The cubic virtual impedance feedback adopted by the application has a cubic surge in the voltage drop change rate with the increase of the current. At a critical moment in the initial stage of overcurrent, the nonlinear characteristic can amplify the voltage drop compensation amount, so that the voltage reference value is rapidly reduced, thereby greatly shortening the current-limiting response time and limiting the maximum peak value of the transient current.